nanog mailing list archives
Re: ICMP unreachables, code 9,10,13
From: Roland Dobbins <rdobbins () cisco com>
Date: Wed, 28 Mar 2007 16:14:17 -0700
On Mar 28, 2007, at 3:57 PM, Christos Papadopoulos wrote:
Responses with these codes seem to imply the presence of a firewall. Is this assumption correct or are these codes meaningless?
Not just firewalls - ACLs on routers, too.A common practice is to either turn off sending of unreachables or to at least rate-limit them to preserve CPU on the router.
----------------------------------------------------------------------- Roland Dobbins <rdobbins () cisco com> // 408.527.6376 voice Words that come from a machine have no soul. -- Duong Van Ngo
Current thread:
- ICMP unreachables, code 9,10,13 Christos Papadopoulos (Mar 28)
- Re: ICMP unreachables, code 9,10,13 Bill Nash (Mar 28)
- Re: ICMP unreachables, code 9,10,13 Roland Dobbins (Mar 28)