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11-02-2004
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How to determine the interface?
Given the interfaces on a firewall:
eth0 Link encap:Ethernet HWaddr 02:40:67:34:F5:47 inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0 eth1 Link encap:Ethernet HWaddr 86:23:98:45:35:56 inet addr:123.45.240.69 Bcast:255.255.255.255 Mask:255.255.252.0 eth2 Link encap:Ethernet HWaddr 86:23:98:45:35:56 inet addr:123.45.240.70 Bcast:255.255.255.255 Mask:255.255.252.0 eth3 Link encap:Ethernet HWaddr 12:73:00:c4:47:56 inet addr:192.168.1.1 P-t-P:192.168.1.2 Mask:255.255.255.255 and the routing table: Destination Gateway Genmask Iface 192.168.1.2 0.0.0.0 255.255.255.255 eth3 192.168.0.0 0.0.0.0 255.255.255.0 eth0 123.45.240.0 0.0.0.0 255.255.0.0 eth1 123.45.240.0 0.0.0.0 255.255.254.0 eth2 131.244.0.0 0.0.0.0 255.254.0.0 eth3 0.0.0.0 203.45.240.1 0.0.0.0 eth1 If I want to determine the interface which following packets: SRC ADDR DST ADDR 192.168.0.3 123.45.241.30 240.18.10.3 131.244.12.23 10.4.5.6 10.4.5.7 what is the interface for these three pairs? and the most important thing is how to recognize it? |
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11-04-2004
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Oh, I see you did
 You could traceroute to the IP address and find the interface of your machine that way .... BTW, the first one seems to be eth0 .... |
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