Gentoo Archives: gentoo-user

From: Grant <emailgrant@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Strange outbound requests
Date: Sun, 22 Jan 2012 18:51:52
Message-Id: CAN0CFw3Uynd4OCVRFDPt7R5gap6BXYHyQLx8ZhCVRzXG1ke_Rw@mail.gmail.com
In Reply to: Re: [gentoo-user] Strange outbound requests by Michael Orlitzky
1 >>> `watch` isn't going to help too much unless you're looking at it. Append
2 >>> the
3 >>> output to some log file instead. I chose netstat because its output
4 >>> looked
5 >>> easier to parse with a stupid regexp.
6 >>>
7 >>>  while true; do
8 >>>    netstat -antp | grep ':993 '>>  mystery.log;
9 >>>    sleep 1;
10 >>>  done;
11 >>>
12 >>> You'll want to change the port -- I tested to make sure that was really
13 >>> logging my Thunderbird connections.
14 >>
15 >>
16 >> I'm still getting the blocked outbound requests to port 3680 on my
17 >> firewall and I'm running the above script (changed 993 to 3680) on the
18 >> local system indicated by SRC in the firewall log, but mystery.log
19 >> remains empty.  I tested the script with other ports and it seems to
20 >> be working fine.
21 >>
22 >> Also the MAC indicated in the firewall log is 14 blocks long and the
23 >> local system in question has a MAC address 6 blocks long according to
24 >> ifconfig, but the 6 blocks from ifconfig do match 6 of the blocks
25 >> reported by the firewall.
26 >>
27 >> Does this make sense to anyone?
28 >>
29 >
30 > Are you running it as root? If not, you could be missing some connections.
31
32 I'm running it as root.
33
34 > I also typed the 't' in netstat out of habit -- that limits the output to
35 > tcp connections. You can remove it to catch the UDP ones.
36
37 According to the firewall log, the 3680 requests are TCP connections,
38 but I just switched to 'lsof -i' anyway.
39
40 - Grant