Snort mailing list archives
Re: Fwd: Snort blocking connection but not logging the drop
From: "Russ Combs (rucombs)" <rucombs () cisco com>
Date: Mon, 12 May 2014 15:41:08 +0000
________________________________ From: Cody Brugh [cbrugh () gmail com] Sent: Monday, May 12, 2014 11:18 AM To: Russ Combs (rucombs) Cc: Joel Esler (jesler); snort-devel () lists sourceforge net Subject: Re: [Snort-devel] Fwd: Snort blocking connection but not logging the drop How do I gather those stats? Are you looking for this? http://manual.snort.org/node20.html * Not those. Do a clean start, run your traffic, and then stop Snort or give it a usr1 signal and check the output. Check console or syslog depending on how you run. Thanks, Cody On Mon, May 12, 2014 at 11:05 AM, Russ Combs (rucombs) <rucombs () cisco com<mailto:rucombs () cisco com>> wrote: What are your shutdown / usr1 stats? Do they show normalizer blocks? ________________________________ From: Cody Brugh [cbrugh () gmail com<mailto:cbrugh () gmail com>] Sent: Monday, May 12, 2014 10:29 AM To: Russ Combs (rucombs) Cc: Joel Esler (jesler); snort-devel () lists sourceforge net<mailto:snort-devel () lists sourceforge net> Subject: Re: [Snort-devel] Fwd: Snort blocking connection but not logging the drop Can you confirm you received my PCAP file? I would really like to get this issue resolved so I can work with their API. Let me know the status please. On Fri, May 9, 2014 at 9:02 AM, Cody Brugh <cbrugh () gmail com<mailto:cbrugh () gmail com>> wrote: Attached is the pcap of the stamps.com<http://stamps.com> packet capture... can someone check and see what I should do? Thanks, Cody On Fri, May 9, 2014 at 8:19 AM, Russ Combs (rucombs) <rucombs () cisco com<mailto:rucombs () cisco com>> wrote: ________________________________ From: Joel Esler (jesler) Sent: Thursday, May 08, 2014 8:51 PM To: Cody Brugh Cc: snort-devel () lists sourceforge net<mailto:snort-devel () lists sourceforge net> Subject: Re: [Snort-devel] Fwd: Snort blocking connection but not logging the drop Can you send your configuration file, and a packet capture of the session? * Can you also send your usr1 / shutdown stats? -- Joel Esler Sent from my iPhone On May 8, 2014, at 20:49, "Cody Brugh" <cbrugh () gmail com<mailto:cbrugh () gmail com>> wrote: Hi, Our dev team is trying to work with stamps.com<http://stamps.com> API however our in-line snort box is blocking the return connection for unknown reasons. When I turn off snort the connection flows perfectly. Looking at snorby I see no event of the connection being dropped. I've included the command we are running from a internal server that is behind the snort. I also included the tcpdump from this same server for the connection. wget https://216.52.211.91/label/health.aspx --2014-05-08 20:37:33-- https://216.52.211.91/label/health.aspx Connecting to 216.52.211.91<tel:216.52.211.91>:443... connected. 20:37:33.443962 IP 10.2.2.1.52661 > 216.52.211.91.443: Flags [F.], seq 3298140140, ack 2463587275, win 8208, options [nop,nop,TS val 2824990869 ecr 3731400338], length 0 20:37:33.444478 IP 216.52.211.91.443 > 10.2.2.1.52661: Flags [R.], seq 1, ack 1, win 8208, length 0 20:37:33.989510 IP 10.2.2.1.59800 > 216.52.211.91.443: Flags [S], seq 3306929108, win 65535, options [mss 1460,nop,wscale 3,sackOK,TS val 2824990923 ecr 0], length 0 20:37:34.071548 IP 216.52.211.91.443 > 10.2.2.1.59800: Flags [S.], seq 361712399, ack 3306929109, win 4140, options [mss 1380,nop,wscale 3,nop,nop,TS val 3731482846 ecr 2824990923,sackOK,eol], length 0 20:37:34.071610 IP 10.2.2.1.59800 > 216.52.211.91.443: Flags [.], ack 1, win 8208, options [nop,nop,TS val 2824990932 ecr 3731482846], length 0 20:37:34.071750 IP 10.2.2.1.59800 > 216.52.211.91.443: Flags [P.], ack 1, win 8208, options [nop,nop,TS val 2824990932 ecr 3731482846], length 139 20:37:34.154367 IP 216.52.211.91.443 > 10.2.2.1.59800: Flags [.], ack 140, win 517, options [nop,nop,TS val 3731482928 ecr 2824990932], length 1368 20:37:34.154462 IP 216.52.211.91.443 > 10.2.2.1.59800: Flags [.], ack 140, win 517, options [nop,nop,TS val 3731482928 ecr 2824990932], length 1368 20:37:34.154490 IP 10.2.2.1.59800 > 216.52.211.91.443: Flags [.], ack 2737, win 7877, options [nop,nop,TS val 2824990940 ecr 3731482928], length 0 20:37:44.153373 IP 216.52.211.91.443 > 10.2.2.1.59800: Flags [R.], seq 4233:4288, ack 140, win 534, length 55 any help or suggestions would be great, I would like to disable the rule that is blocking this connection but like I said I cannot see which rule blocked it. 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Current thread:
- Fwd: Snort blocking connection but not logging the drop Cody Brugh (May 08)
- Re: Fwd: Snort blocking connection but not logging the drop Joel Esler (jesler) (May 08)
- Re: Fwd: Snort blocking connection but not logging the drop Russ Combs (rucombs) (May 09)
- Re: Fwd: Snort blocking connection but not logging the drop Cody Brugh (May 09)
- Re: Fwd: Snort blocking connection but not logging the drop Cody Brugh (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Russ Combs (rucombs) (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Cody Brugh (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Russ Combs (rucombs) (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Cody Brugh (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Russ Combs (rucombs) (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Cody Brugh (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Russ Combs (rucombs) (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Cody Brugh (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Russ Combs (rucombs) (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Cody Brugh (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Russ Combs (rucombs) (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Cody Brugh (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Russ Combs (rucombs) (May 12)
- Re: Fwd: Snort blocking connection but not logging the drop Russ Combs (rucombs) (May 09)
- Re: Fwd: Snort blocking connection but not logging the drop Joel Esler (jesler) (May 08)