Stupid Cisco ACL question

Jay Ford jay-ford at
Thu Apr 21 19:20:09 UTC 2011

On Thu, 21 Apr 2011, up at wrote:
> permit tcp any eq 443 any
> permit tcp any eq 80 any
> deny ip any host
> permit ip any any
> This is applied to an inbound interface(s).  We want anybody outside to be
> able to reach ports 80 and 443 of any host on our network, no matter what,
> then block ALL other access to select hosts, such as, even ICMP.
> However, as soon as I apply this rule to the interface, ports 80 and 443
> of that host become unreachable.  A telnet to 443 gets "Connection
> refused" until I tear out the deny ACL above.  I even tried adding udp for
> both ports, to no avail.

Your ACL is apply the 80 & 443 as source ports, not destination ports.

You probably want:
    permit tcp any any eq 443
    permit tcp any any eq 80
    deny ip any host
    permit ip any any

Jay Ford, Network Engineering Group, Information Technology Services
University of Iowa, Iowa City, IA 52242
email: jay-ford at, phone: 319-335-5555, fax: 319-335-2951

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