Re: nmap from net a to net B, don't work, but ping yes
- From: Ravenpi <ken@xxxxxxxx>
- Date: Wed, 24 Sep 2008 06:53:37 -0700 (PDT)
Hi. I find that, sometimes, ping lies. Are you, for example, able to
actually ssh from pc1 to pc3? I'm guessing no. That being said, I'd
be interested in knowing what the routing tables on pc2, and pc3 are;
do you have 10.10.1.101 as their default gateway? And how about pc1?
You don't state what the IP address for eth1 on pc2 is, but that had
better be the default gateway on pc1 or else things won't work right.
So, to summarize:
1) What are your routing tables on pc1, pc3 and pc4?
2) What is eth1's IP address on pc2?
-Ken
On Sep 24, 6:26 am, RicK_Murphy
<rmarfisiDA_QUI_NO_SPAM_LEVA_TOGLI_TUTTO_QUELLO@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
wrote:
I have 4 pc
pc1 10.10.10.100
pc2 10.10.1.101
pc3 10.10.1.102
pc4 10.10.1.103
pc2 have this routing table:
10.10.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
10.10.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
0.0.0.0 10.10.10.1 0.0.0.0 UG 0 0 0 eth1
it'is a router between 10.10.1.0/24 and 10.10.10.0/24
i do in pc2: sysctl -w net.ipv4.ip_forward=1
when i ping from pc1 to pc3 it works fine
but if i do from pc1 to 10.10.1.0/24
nmap -sS -A 10.10.1.0/24
it find only pc2 (router) because it have eth1 in the same network of pc1
in the same time if i do from pc2:
tcpdump -n -i eth0
it don't capture nothing
but
tcpdump -n -i eth1
capture the traffic
why this behavior?
thanks a lot and scuse me for my bad english
--
Riccardo (http://termitano.myminicity.com, visitate e se volete partecipate
sulhttp://www.iltermitano.it/)
A computer is like an air conditioner,
it stops working when you open Windows.
Registered Linux user #457776
.
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