[j-nsp] Preventing router from giving up it's IP in traceroutes

Stephen Gill gillsr at yahoo.com
Wed Feb 12 23:17:38 EST 2003


Have you tried applying it to fxp0?

-- steve

-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net
[mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Phil Rosenthal
Sent: Wednesday, February 12, 2003 7:19 PM
To: juniper-nsp at puck.nether.net
Subject: [j-nsp] Preventing router from giving up it's IP in traceroutes

Is there any reliable non-kludge way of making the juniper not send out
time-exceeded responses, or doing it from a consistently incorrect
address?

# show firewall filter route-engine-out
term no-expire-out {
    from {
        icmp-type time-exceeded;
    }
    then discard;
}
term allow-rest {
    then accept;
}

[edit]

Applying this as an outbound filter on lo0 seems to have no effect.
I could put a filter on all interfaces, but this seems to be too much
work
to maintain...

--Phil
ISPrime

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