5 "Advanced" networking questions
Socketd
db at traceroute.dk
Tue Jul 8 04:05:21 PDT 2003
On Tue, 08 Jul 2003 03:17:00 -0700
Terry Lambert <tlambert2 at mindspring.com> wrote:
> Socketd wrote:
> > Ok, anyway to prevent sending ICMP's when ttl = 0? Or do I need a
> > firewall?
>
> I guess you want to do this so that you can break path MTU
> discovery and fail to properly exchange packets with the DF
> bit set in the headers, and which don't take into account
> intermediate links with smaller MTUs, like VPNs or PPPOE
> links?
>
> What exactly are you getting from disabling ICMP, besides a
> broken network connection to some systems you may wish to be
> able to exchange packets with?
I don't want to disable ICMP, just don't want to respond when ttl=0,
meaning when my firewall/gateway is on a "traceroute path".
br
socketd
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