Snort mailing list archives
Re: Only seeing arp traffic?
From: "Thorin" <thorinoakenshield () mediaone net>
Date: Thu, 5 Jul 2001 21:16:09 -0400
Righto - You're on a Cable modem - attached to some sort of switch upstream. That would be why you can see only broadcast traffic (all attached devices will) and traffic directed expressly at you on what looks to be your segment in Cranston, RI (from the resolved hostnames). I'm assuming this is a second interface - in place to monitor traffic destined to your local net? --Thorin ----- Original Message ----- From: "Paul Asadoorian" <paul.com () home com> To: "Snort-Users" <snort-users () lists sourceforge net> Sent: Thursday, July 05, 2001 20:53 Subject: [Snort-users] Only seeing arp traffic?
I have the following configuration: Cable Modem /\ | | \/ HUB <-----> Snort IDS with No IP address (OpenBSD 2.7 Sparc 20, snort 1.7rel2) /\ | | \/ UGate-3200 Firewall /\ | | \/ Rest of network (All lines are catV ethernet, The one to the cable modem is plugged into
the
xover port on the hub, every other host on the network is running a-okay). Here is a sample of the traffic that I have been seeing: # tcpdump -i hme0 tcpdump: WARNING: hme0: no IPv4 address assigned tcpdump: listening on hme0 20:02:02.967846 arp who-has 24.7.7.127 tell 24.7.7.1 20:02:07.827799 arp who-has 24.7.7.127 tell 24.7.7.1 20:02:10.378441 arp who-has 24.7.7.127 tell 24.7.7.1 20:02:14.391034 arp who-has 24.7.7.127 tell 24.7.7.1 20:02:14.823077 arp who-has 65.11.234.220 tell 65.11.234.129 20:02:15.277576 10.67.142.1.bootps > 255.255.255.255.bootpc: xid:0x39ac flags:0x8000 Y:10.108.47.8 S:24.2.0.14 G:10.67.142.1 ether
0:20:40:b4:39:ac
[|bootp] 20:02:15.375589 10.67.142.1.bootps > 255.255.255.255.bootpc: xid:0x39ac flags:0x8000 Y:10.108.47.8 S:24.2.0.14 G:10.67.142.1 ether
0:20:40:b4:39:ac
file ""[|bootp] 20:02:16.549517 arp who-has 24.7.7.127 tell 24.7.7.1 20:02:17.746115 arp who-has 65.11.234.220 tell 65.11.234.129 20:02:23.864878 arp who-has 65.11.234.220 tell 65.11.234.129 20:02:33.062801 arp who-has 24.7.7.127 tell 24.7.7.1 20:02:36.455231 arp who-has 24.7.7.127 tell 24.7.7.1 20:02:40.404566 arp who-has 24.7.7.127 tell 24.7.7.1 20:02:41.068053 arp who-has 24.18.130.137 tell 24.18.130.1 20:02:43.233819 arp who-has 24.7.7.127 tell 24.7.7.1 20:02:44.042454 arp who-has 24.18.130.137 tell 24.18.130.1 I found the bootp traffic particularly interesting, but I would really
like
to see more common IP trafffic (like TCP, UDP, ICMP maybe? :-) Any help is greatly appreciated. Thanks, in advance.... Paul _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: http://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
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Current thread:
- Only seeing arp traffic? Paul Asadoorian (Jul 05)
- Re: Only seeing arp traffic? Thorin (Jul 05)
- <Possible follow-ups>
- RE: Only seeing arp traffic? Hawrylkiw, Dan G (Jul 06)