Re[2]: ping reply from different ip

[konf@lwis.net]

Hello Christopher,

Sunday, August 7, 2005, 11:46:47 AM, you wrote:

CPG> konf@lwis.net, 

>> When I ping my Debian box ip address 193.219.149.119 I receive a reply
>> from different ip address 193.219.95.38. I am a newbie and I want to
>> ask if this is a problem. I yes, how can I fix it or where should I
>> look for comprehensive information.
>> I simply think that due to this problem my mail does not reach my
>> server.

CPG> Well, guessing from the DNS-entries for the two IPs:

CPG> 119.149.219.193.in-addr.arpa domain name pointer elre-56.vtu.lt.
CPG> 38.95.219.193.in-addr.arpa domain name pointer gw2vu.vtu.lt.

CPG> I'd guess the root cause is the gateway. tcpdump reports the following:

CPG> 09:43:59.888301 IP x.y.z > elre-56.vtu.lt: ICMP echo
CPG> request, id 61966, seq 0, length 64
CPG> 119.149.219.193.in-addr.arpa. (57)
CPG> 09:43:59.955493 IP gw2vu.vtu.lt > x.y.z: ICMP host
CPG> elre-56.vtu.lt unreachable - admin prohibited filter, length 36

CPG> So the "problem" is that the gateway is blocking ping-packets. As for
CPG> the smtp-problem, I get a RST-packet back from your server IP (not the
CPG> gateway). You don't have a locally installed firewall or the like?

Well, I have iptables and bastille.


-- 
Best regards,
 konf                            mailto:konf@lwis.net