NAT Overloading: Restricting ports to a higher value?

Unanswered Question
Mar 20th, 2008

From the below, I've did a NAT overloading (IOS) for traffic going from 11.11.11.11 to 10.22.22.0/24. But having read in some doc that for icmp traffic, PAT will use ports starting from 0, I'm wondering if there's a way to set the port to a higher port value.

From the below debug, it is currently using port 80. Is there any way to restrict the port to a higher number, e.g. 1000+ ?

Thanks.

*Mar 3 03:32:23.751: NAT: map match test

*Mar 3 03:32:23.751: NAT: [0] Allocated Port for 11.11.11.11 -> 10.22.22.1: wanted 8 got 8

*Mar 3 03:32:23.755: NAT: i: icmp (11.11.11.11, 8) -> (10.22.22.2, 8) [40]

*Mar 3 03:32:23.759: NAT: s=11.11.11.11->10.22.22.1, d=10.22.22.2 [40]

I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
amritpatek Wed, 03/26/2008 - 12:45

This is not possible for ICMP traffic since selecting ports is only possible for TCP and UDP protocols.

Actions

This Discussion