diff --git a/conntrackt/templatetags/conntrackt.py b/conntrackt/templatetags/conntrackt.py
--- a/conntrackt/templatetags/conntrackt.py
+++ b/conntrackt/templatetags/conntrackt.py
@@ -10,7 +10,7 @@ register = template.Library()
 @register.inclusion_tag('conntrackt/html_link.html')
 def html_link(text, view, *args, **kwargs):
     """
-    A small wrapper for showing HTML linnks.
+    A small wrapper for showing HTML links.
 
     Positional arguments:
 
@@ -51,6 +51,25 @@ def html_link(text, view, *args, **kwarg
 
     return context
 
+@register.simple_tag
+def iptables(communication):
+    """
+    Produces an iptables rule based on the provided models.Communication object
+    instance. The rule is appropriate for inclusion in the INPUT section of a
+    file provided to the iptables-restore command.
+
+    Arguments:
+
+        communication - Instance of a models.Communication object.
+    """
+    values = (communication.source.address, communication.source.netmask, communication.protocol.lower(), communication.protocol.lower(), communication.port)
+    if communication.protocol in ('TCP', 'UDP'):
+        rule_template = "-A INPUT -s %s/%s -p %s -m %s --dport %s -j ACCEPT"
+    elif communication.protocol in ('ICMP'):
+        rule_template = "-A INPUT -s %s/%s -p %s -m %s --icmp-type %s -j ACCEPT"
+
+    return rule_template % values
+
 @register.simple_tag(takes_context = True)
 def active_link(context, url_name, return_value='active', **kwargs):
     """