ahp (51), eigrp (88), esp (50), gre (47), igrp (9), icmp (1), igmp (2), igrp (9), ip
(0), ipinip (4), nos (94), ospf (89), pcp (108), pim (103), tcp (6), or udp (17).
0 is 'ip'.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Nurarif W
Sent: Friday, January 19, 2001 4:41 PM
To: [EMAIL PROTECTED]
Subject: TCP port number 0
Hi,
Does anyone know what is the purpose of tcp port number 0 ?
I have an experience catching traffic coming from HTTP server with tcp =
port number 0 and destinated to any IP address with tcp port number 0. =
After I put an incoming acces-list that blocked port number 0, a few =
minute later I saw this packet was never being generated again. The =
access-list is applied for incoming traffic.
For example :
access-list 101 deny tcp host HTTPserver eq 0 any log
access-list 101 deny tcp any any eq 0 log
access-list 101 deny tcp any eq 0 any log
access-list 101 permit ip any any
Thank you
_________________________________
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
_________________________________
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
