Open Port 4

Unanswered Question
Jan 14th, 2008

Hello all,

Cisco Newbie here.

We have just put a gateway between our PIX 515e and our email server. This gateway needs port 4 open to receive its updates from the manufacturer.

Could someone please advise the securist way to do this?

Thanks in advance


I have this problem too.
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JORGE RODRIGUEZ Mon, 01/14/2008 - 09:31

The securist way to do it allow only vendor source IP address.


Outside Vendor Public IP:

Inside Gateway Local IP :

Public IP for Gateway :

TCP Services , TCP port 4, and/or UDP 4

Create static NAT for your local IP system and assign public IP of

Static (inside,outside) 0 0

access-list outside_access_in permit tcp host host eq 4

access-list outside_access_in permit udp host host eq 4

access-group outside_access_in in interface outside




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