firewall: configurable reverse, cnames, optional ipv6

firewall/admin.py

@@ -3,7 +3,7 @@ from firewall.models import *
 
 
 class HostAdmin(admin.ModelAdmin):
-    list_display = ('hostname', 'vlan', 'ipv4', 'ipv6', 'pub_ipv4', 'mac', 'shared_ip', 'owner', 'groups_l', 'rules_l', 'description')
+    list_display = ('hostname', 'vlan', 'ipv4', 'ipv6', 'pub_ipv4', 'mac', 'shared_ip', 'owner', 'groups_l', 'rules_l', 'description', 'reverse')
     ordering = ('hostname',)
     list_filter = ('owner', 'vlan', 'groups')
     search_fields = ('hostname', 'description', 'ipv4', 'ipv6', 'mac')
@@ -17,9 +17,14 @@ class RuleAdmin(admin.ModelAdmin):
     list_display = ('r_type', 'color_desc', 'description', 'vlan_l', 'owner', 'extra', 'direction', 'accept', 'proto', 'sport', 'dport', 'nat', 'nat_dport')
     list_filter = ('r_type', 'vlan', 'owner', 'direction', 'accept', 'proto', 'nat')
 
+class AliasAdmin(admin.ModelAdmin):
+        list_display = ('alias', 'host')
+
+
 admin.site.register(Host, HostAdmin)
 admin.site.register(Vlan, VlanAdmin)
 admin.site.register(Rule, RuleAdmin)
+admin.site.register(Alias, AliasAdmin)
 admin.site.register(Group)
 admin.site.register(Firewall)
 

firewall/fw.py

@@ -37,7 +37,7 @@ class firewall:
         self.SZABALYOK_NAT.append(s)
 
     def host2vlan(self, host, rule):
-        if(self.IPV6):
+        if(self.IPV6 and host.ipv6):
             ipaddr = host.ipv6 + "/112"
         else:
             ipaddr = host.ipv4
@@ -343,11 +343,16 @@ def dns():
             ipv4 = ( i_host.pub_ipv4 if i_host.pub_ipv4 and not i_host.shared_ip else i_host.ipv4 )
             m2 = regex.search(ipv4)
             # ipv4
-            DNS.append("=%s.%s:%s:600::\n" % (i_host.hostname, i_vlan.domain, ipv4))
-            DNS.append("^%s.dns1.%s.%s.%s.in-addr.arpa:%s.%s:600::\n" % (m2.group(4), m2.group(3), m2.group(2), m2.group(1), i_host.hostname, i_vlan.domain))
+            DNS.append("+%s:%s:600::\n" % (i_host.hostname + u'.' + i_vlan.domain, ipv4))
+            DNS.append("^%s.%s.%s.%s.in-addr.arpa:%s:600::\n" % (m2.group(4), m2.group(3), m2.group(2), m2.group(1), i_host.reverse if(i_host.reverse and len(i_host.reverse)) else i_host.hostname + u'.' + i_vlan.domain))
+            DNS.append("^%s.dns1.%s.%s.%s.in-addr.arpa:%s:600::\n" % (m2.group(4), m2.group(3), m2.group(2), m2.group(1), i_host.reverse if(i_host.reverse and len(i_host.reverse)) else i_host.hostname + u'.' + i_vlan.domain))
             # ipv6
-            DNS.append(":%s.%s:28:%s:600\n" % (i_host.hostname, i_vlan.domain, ipv6_to_octal(i_host.ipv6)))
-            DNS.append("^%s:%s.%s:600::\n" % (ipv6_to_arpa(i_host.ipv6), i_host.hostname, i_vlan.domain))
+            if i_host.ipv6:
+                DNS.append(":%s:28:%s:600\n" % (i_host.hostname + u'.' + i_vlan.domain, ipv6_to_octal(i_host.ipv6)))
+                DNS.append("^%s:%s:600::\n" % (ipv6_to_arpa(i_host.ipv6), i_host.reverse if(i_host.reverse and len(i_host.reverse)) else i_host.hostname + u'.' + i_vlan.domain))
+            # cname
+            for i_alias in i_host.alias_set.all():
+                DNS.append("C%s:%s.%s:600\n" % (i_alias.alias, i_host.hostname, i_vlan.domain))
 
     process = subprocess.Popen(['/usr/bin/ssh', 'tinydns@%s' % DNS_SERVER], shell=False, stdin=subprocess.PIPE)
     process.communicate("\n".join(DNS)+"\n")

firewall/migrations/0016_auto__add_alias__chg_field_host_ipv6.py

+# -*- coding: utf-8 -*-
+import datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        # Adding model 'Alias'
+        db.create_table('firewall_alias', (
+            ('id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
+            ('host', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['firewall.Host'])),
+            ('hostname', self.gf('django.db.models.fields.CharField')(unique=True, max_length=40)),
+        ))
+        db.send_create_signal('firewall', ['Alias'])
+
+
+        # Changing field 'Host.ipv6'
+        db.alter_column('firewall_host', 'ipv6', self.gf('django.db.models.fields.GenericIPAddressField')(max_length=39, unique=True, null=True))
+
+    def backwards(self, orm):
+        # Deleting model 'Alias'
+        db.delete_table('firewall_alias')
+
+
+        # User chose to not deal with backwards NULL issues for 'Host.ipv6'
+        raise RuntimeError("Cannot reverse this migration. 'Host.ipv6' and its values cannot be restored.")
+
+    models = {
+        'auth.group': {
+            'Meta': {'object_name': 'Group'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+        },
+        'auth.permission': {
+            'Meta': {'ordering': "('content_type__app_label', 'content_type__model', 'codename')", 'unique_together': "(('content_type', 'codename'),)", 'object_name': 'Permission'},
+            'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        'auth.user': {
+            'Meta': {'object_name': 'User'},
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
+            'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
+        },
+        'contenttypes.contenttype': {
+            'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+            'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+        },
+        'firewall.alias': {
+            'Meta': {'object_name': 'Alias'},
+            'host': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['firewall.Host']"}),
+            'hostname': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '40'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
+        },
+        'firewall.firewall': {
+            'Meta': {'object_name': 'Firewall'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Rule']", 'null': 'True', 'blank': 'True'})
+        },
+        'firewall.group': {
+            'Meta': {'object_name': 'Group'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Rule']", 'null': 'True', 'blank': 'True'})
+        },
+        'firewall.host': {
+            'Meta': {'object_name': 'Host'},
+            'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Group']", 'null': 'True', 'blank': 'True'}),
+            'hostname': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '40'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ipv4': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'ipv6': ('django.db.models.fields.GenericIPAddressField', [], {'max_length': '39', 'unique': 'True', 'null': 'True', 'blank': 'True'}),
+            'location': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'mac': ('firewall.fields.MACAddressField', [], {'unique': 'True', 'max_length': '17'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"}),
+            'pub_ipv4': ('django.db.models.fields.GenericIPAddressField', [], {'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Rule']", 'null': 'True', 'blank': 'True'}),
+            'shared_ip': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'vlan': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['firewall.Vlan']"})
+        },
+        'firewall.rule': {
+            'Meta': {'object_name': 'Rule'},
+            'accept': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'direction': ('django.db.models.fields.CharField', [], {'max_length': '1'}),
+            'dport': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'extra': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'nat': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'nat_dport': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'null': 'True', 'blank': 'True'}),
+            'proto': ('django.db.models.fields.CharField', [], {'max_length': '10', 'null': 'True', 'blank': 'True'}),
+            'r_type': ('django.db.models.fields.CharField', [], {'max_length': '10'}),
+            'sport': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'vlan': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Vlan']", 'null': 'True', 'blank': 'True'})
+        },
+        'firewall.vlan': {
+            'Meta': {'object_name': 'Vlan'},
+            'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'dhcp_pool': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'domain': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'interface': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'ipv4': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'ipv6': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'net4': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'net6': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'prefix4': ('django.db.models.fields.IntegerField', [], {'default': '16'}),
+            'prefix6': ('django.db.models.fields.IntegerField', [], {'default': '80'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'blank': 'True', 'related_name': "'firewall_vlan_related'", 'null': 'True', 'symmetrical': 'False', 'to': "orm['firewall.Rule']"}),
+            'snat_ip': ('django.db.models.fields.GenericIPAddressField', [], {'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'snat_to': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Vlan']", 'null': 'True', 'blank': 'True'}),
+            'vid': ('django.db.models.fields.IntegerField', [], {'unique': 'True'})
+        }
+    }
+
+    complete_apps = ['firewall']
\ No newline at end of file

firewall/migrations/0017_auto__del_field_alias_hostname__add_field_alias_alias.py

+# -*- coding: utf-8 -*-
+import datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        # Deleting field 'Alias.hostname'
+        db.delete_column('firewall_alias', 'hostname')
+
+        # Adding field 'Alias.alias'
+        db.add_column('firewall_alias', 'alias',
+                      self.gf('django.db.models.fields.CharField')(default=None, unique=True, max_length=40),
+                      keep_default=False)
+
+
+    def backwards(self, orm):
+
+        # User chose to not deal with backwards NULL issues for 'Alias.hostname'
+        raise RuntimeError("Cannot reverse this migration. 'Alias.hostname' and its values cannot be restored.")
+        # Deleting field 'Alias.alias'
+        db.delete_column('firewall_alias', 'alias')
+
+
+    models = {
+        'auth.group': {
+            'Meta': {'object_name': 'Group'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+        },
+        'auth.permission': {
+            'Meta': {'ordering': "('content_type__app_label', 'content_type__model', 'codename')", 'unique_together': "(('content_type', 'codename'),)", 'object_name': 'Permission'},
+            'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        'auth.user': {
+            'Meta': {'object_name': 'User'},
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
+            'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
+        },
+        'contenttypes.contenttype': {
+            'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+            'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+        },
+        'firewall.alias': {
+            'Meta': {'object_name': 'Alias'},
+            'alias': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '40'}),
+            'host': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['firewall.Host']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
+        },
+        'firewall.firewall': {
+            'Meta': {'object_name': 'Firewall'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Rule']", 'null': 'True', 'blank': 'True'})
+        },
+        'firewall.group': {
+            'Meta': {'object_name': 'Group'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Rule']", 'null': 'True', 'blank': 'True'})
+        },
+        'firewall.host': {
+            'Meta': {'object_name': 'Host'},
+            'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Group']", 'null': 'True', 'blank': 'True'}),
+            'hostname': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '40'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ipv4': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'ipv6': ('django.db.models.fields.GenericIPAddressField', [], {'max_length': '39', 'unique': 'True', 'null': 'True', 'blank': 'True'}),
+            'location': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'mac': ('firewall.fields.MACAddressField', [], {'unique': 'True', 'max_length': '17'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"}),
+            'pub_ipv4': ('django.db.models.fields.GenericIPAddressField', [], {'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Rule']", 'null': 'True', 'blank': 'True'}),
+            'shared_ip': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'vlan': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['firewall.Vlan']"})
+        },
+        'firewall.rule': {
+            'Meta': {'object_name': 'Rule'},
+            'accept': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'direction': ('django.db.models.fields.CharField', [], {'max_length': '1'}),
+            'dport': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'extra': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'nat': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'nat_dport': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'null': 'True', 'blank': 'True'}),
+            'proto': ('django.db.models.fields.CharField', [], {'max_length': '10', 'null': 'True', 'blank': 'True'}),
+            'r_type': ('django.db.models.fields.CharField', [], {'max_length': '10'}),
+            'sport': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'vlan': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Vlan']", 'null': 'True', 'blank': 'True'})
+        },
+        'firewall.vlan': {
+            'Meta': {'object_name': 'Vlan'},
+            'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'dhcp_pool': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'domain': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'interface': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'ipv4': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'ipv6': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'net4': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'net6': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'prefix4': ('django.db.models.fields.IntegerField', [], {'default': '16'}),
+            'prefix6': ('django.db.models.fields.IntegerField', [], {'default': '80'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'blank': 'True', 'related_name': "'firewall_vlan_related'", 'null': 'True', 'symmetrical': 'False', 'to': "orm['firewall.Rule']"}),
+            'snat_ip': ('django.db.models.fields.GenericIPAddressField', [], {'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'snat_to': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Vlan']", 'null': 'True', 'blank': 'True'}),
+            'vid': ('django.db.models.fields.IntegerField', [], {'unique': 'True'})
+        }
+    }
+
+    complete_apps = ['firewall']
\ No newline at end of file

firewall/migrations/0018_auto__add_field_host_reverse.py

+# -*- coding: utf-8 -*-
+import datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        # Adding field 'Host.reverse'
+        db.add_column('firewall_host', 'reverse',
+                      self.gf('django.db.models.fields.CharField')(max_length=40, unique=True, null=True, blank=True),
+                      keep_default=False)
+
+
+    def backwards(self, orm):
+        # Deleting field 'Host.reverse'
+        db.delete_column('firewall_host', 'reverse')
+
+
+    models = {
+        'auth.group': {
+            'Meta': {'object_name': 'Group'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+        },
+        'auth.permission': {
+            'Meta': {'ordering': "('content_type__app_label', 'content_type__model', 'codename')", 'unique_together': "(('content_type', 'codename'),)", 'object_name': 'Permission'},
+            'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        'auth.user': {
+            'Meta': {'object_name': 'User'},
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
+            'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
+        },
+        'contenttypes.contenttype': {
+            'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+            'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+        },
+        'firewall.alias': {
+            'Meta': {'object_name': 'Alias'},
+            'alias': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '40'}),
+            'host': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['firewall.Host']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
+        },
+        'firewall.firewall': {
+            'Meta': {'object_name': 'Firewall'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Rule']", 'null': 'True', 'blank': 'True'})
+        },
+        'firewall.group': {
+            'Meta': {'object_name': 'Group'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Rule']", 'null': 'True', 'blank': 'True'})
+        },
+        'firewall.host': {
+            'Meta': {'object_name': 'Host'},
+            'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Group']", 'null': 'True', 'blank': 'True'}),
+            'hostname': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '40'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ipv4': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'ipv6': ('django.db.models.fields.GenericIPAddressField', [], {'max_length': '39', 'unique': 'True', 'null': 'True', 'blank': 'True'}),
+            'location': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'mac': ('firewall.fields.MACAddressField', [], {'unique': 'True', 'max_length': '17'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"}),
+            'pub_ipv4': ('django.db.models.fields.GenericIPAddressField', [], {'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'reverse': ('django.db.models.fields.CharField', [], {'max_length': '40', 'unique': 'True', 'null': 'True', 'blank': 'True'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Rule']", 'null': 'True', 'blank': 'True'}),
+            'shared_ip': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'vlan': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['firewall.Vlan']"})
+        },
+        'firewall.rule': {
+            'Meta': {'object_name': 'Rule'},
+            'accept': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'direction': ('django.db.models.fields.CharField', [], {'max_length': '1'}),
+            'dport': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'extra': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'nat': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'nat_dport': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'null': 'True', 'blank': 'True'}),
+            'proto': ('django.db.models.fields.CharField', [], {'max_length': '10', 'null': 'True', 'blank': 'True'}),
+            'r_type': ('django.db.models.fields.CharField', [], {'max_length': '10'}),
+            'sport': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'vlan': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Vlan']", 'null': 'True', 'blank': 'True'})
+        },
+        'firewall.vlan': {
+            'Meta': {'object_name': 'Vlan'},
+            'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'dhcp_pool': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'domain': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'interface': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'ipv4': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'ipv6': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'net4': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'net6': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'prefix4': ('django.db.models.fields.IntegerField', [], {'default': '16'}),
+            'prefix6': ('django.db.models.fields.IntegerField', [], {'default': '80'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'blank': 'True', 'related_name': "'firewall_vlan_related'", 'null': 'True', 'symmetrical': 'False', 'to': "orm['firewall.Rule']"}),
+            'snat_ip': ('django.db.models.fields.GenericIPAddressField', [], {'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'snat_to': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Vlan']", 'null': 'True', 'blank': 'True'}),
+            'vid': ('django.db.models.fields.IntegerField', [], {'unique': 'True'})
+        }
+    }
+
+    complete_apps = ['firewall']
\ No newline at end of file

firewall/migrations/0019_auto__del_unique_host_reverse.py

+# -*- coding: utf-8 -*-
+import datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        # Removing unique constraint on 'Host', fields ['reverse']
+        db.delete_unique('firewall_host', ['reverse'])
+
+
+    def backwards(self, orm):
+        # Adding unique constraint on 'Host', fields ['reverse']
+        db.create_unique('firewall_host', ['reverse'])
+
+
+    models = {
+        'auth.group': {
+            'Meta': {'object_name': 'Group'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+        },
+        'auth.permission': {
+            'Meta': {'ordering': "('content_type__app_label', 'content_type__model', 'codename')", 'unique_together': "(('content_type', 'codename'),)", 'object_name': 'Permission'},
+            'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        'auth.user': {
+            'Meta': {'object_name': 'User'},
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
+            'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
+        },
+        'contenttypes.contenttype': {
+            'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+            'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+        },
+        'firewall.alias': {
+            'Meta': {'object_name': 'Alias'},
+            'alias': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '40'}),
+            'host': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['firewall.Host']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'})
+        },
+        'firewall.firewall': {
+            'Meta': {'object_name': 'Firewall'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Rule']", 'null': 'True', 'blank': 'True'})
+        },
+        'firewall.group': {
+            'Meta': {'object_name': 'Group'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Rule']", 'null': 'True', 'blank': 'True'})
+        },
+        'firewall.host': {
+            'Meta': {'object_name': 'Host'},
+            'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Group']", 'null': 'True', 'blank': 'True'}),
+            'hostname': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '40'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ipv4': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'ipv6': ('django.db.models.fields.GenericIPAddressField', [], {'max_length': '39', 'unique': 'True', 'null': 'True', 'blank': 'True'}),
+            'location': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'mac': ('firewall.fields.MACAddressField', [], {'unique': 'True', 'max_length': '17'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"}),
+            'pub_ipv4': ('django.db.models.fields.GenericIPAddressField', [], {'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'reverse': ('django.db.models.fields.CharField', [], {'max_length': '40', 'null': 'True', 'blank': 'True'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Rule']", 'null': 'True', 'blank': 'True'}),
+            'shared_ip': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'vlan': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['firewall.Vlan']"})
+        },
+        'firewall.rule': {
+            'Meta': {'object_name': 'Rule'},
+            'accept': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'direction': ('django.db.models.fields.CharField', [], {'max_length': '1'}),
+            'dport': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'extra': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'nat': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'nat_dport': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'null': 'True', 'blank': 'True'}),
+            'proto': ('django.db.models.fields.CharField', [], {'max_length': '10', 'null': 'True', 'blank': 'True'}),
+            'r_type': ('django.db.models.fields.CharField', [], {'max_length': '10'}),
+            'sport': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'vlan': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Vlan']", 'null': 'True', 'blank': 'True'})
+        },
+        'firewall.vlan': {
+            'Meta': {'object_name': 'Vlan'},
+            'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'dhcp_pool': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'domain': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'interface': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'ipv4': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'ipv6': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
+            'net4': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'net6': ('django.db.models.fields.GenericIPAddressField', [], {'unique': 'True', 'max_length': '39'}),
+            'prefix4': ('django.db.models.fields.IntegerField', [], {'default': '16'}),
+            'prefix6': ('django.db.models.fields.IntegerField', [], {'default': '80'}),
+            'rules': ('django.db.models.fields.related.ManyToManyField', [], {'blank': 'True', 'related_name': "'firewall_vlan_related'", 'null': 'True', 'symmetrical': 'False', 'to': "orm['firewall.Rule']"}),
+            'snat_ip': ('django.db.models.fields.GenericIPAddressField', [], {'max_length': '39', 'null': 'True', 'blank': 'True'}),
+            'snat_to': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['firewall.Vlan']", 'null': 'True', 'blank': 'True'}),
+            'vid': ('django.db.models.fields.IntegerField', [], {'unique': 'True'})
+        }
+    }
+
+    complete_apps = ['firewall']
\ No newline at end of file

firewall/models.py

@@ -97,12 +97,19 @@ class Group(models.Model):
     def __unicode__(self):
         return self.name
 
+class Alias(models.Model):
+    host = models.ForeignKey('Host')
+    alias = models.CharField(max_length=40, unique=True, validators=[val_domain])
+    class Meta:
+        verbose_name_plural = 'aliases'
+
 class Host(models.Model):
     hostname = models.CharField(max_length=40, unique=True, validators=[val_alfanum])
+    reverse = models.CharField(max_length=40, validators=[val_domain], blank=True, null=True)
     mac = MACAddressField(unique=True)
     ipv4 = models.GenericIPAddressField(protocol='ipv4', unique=True)
     pub_ipv4 = models.GenericIPAddressField(protocol='ipv4', blank=True, null=True)
-    ipv6 = models.GenericIPAddressField(protocol='ipv6', unique=True, blank=True)
+    ipv6 = models.GenericIPAddressField(protocol='ipv6', unique=True, blank=True, null=True)
     shared_ip = models.BooleanField(default=False)
     description = models.TextField(blank=True)
     comment = models.TextField(blank=True)
@@ -115,7 +122,7 @@ class Host(models.Model):
     def __unicode__(self):
         return self.hostname
     def save(self, *args, **kwargs):
-        if not self.id and not self.ipv6:
+        if not self.id and self.ipv6 == "auto":
             self.ipv6 = ipv4_2_ipv6(self.ipv4)
         if not self.shared_ip and self.pub_ipv4 and Host.objects.exclude(id=self.id).filter(pub_ipv4=self.pub_ipv4):
             raise ValidationError("Ha a shared_ip be van pipalva, akkor egyedinek kell lennie a pub_ipv4-nek!")
@@ -138,7 +145,7 @@ class Host(models.Model):
 
     def add_port(self, proto, public, private):
         proto = "tcp" if (proto == "tcp") else "udp"
-        if public < 1024: 
+        if public < 1024:
             raise ValidationError("Csak az 1024 feletti portok hasznalhatok")
         for host in Host.objects.filter(pub_ipv4=self.pub_ipv4):
             if host.rules.filter(nat=True, proto=proto, dport=public):