Snort mailing list archives
Re: Post-Detection keyword [logto] not working
From: James Lay <jlay () slave-tothe-box net>
Date: Tue, 14 Apr 2015 05:29:07 -0600
On Mon, 2015-04-13 at 20:14 -0300, Emiliano Fausto wrote:
Hi James, thanks for the quick answer. Unfortunately I didn't configured the BINARY output, because the documentation of logto says that it doesn't work with binary. So the only output I set in the snort.conf was the alert_fast. Anyway, I also tried with alert_full, and log_tcpdump but nothing. Thanks! Emiliano. On Mon, Apr 13, 2015 at 6:50 PM, James Lay <jlay () slave-tothe-box net> wrote: On 2015-04-13 03:27 PM, Emiliano Fausto wrote: > Hi there, > > I'm having troubles to get the "logto" keyword working > properly. > I'm using snort version 2.9.7, and what I've tried was: > 1) Just letting this rule in the snort.conf file: > alert tcp any any <> any 8000 (content:"testing"; nocase; > logto:testing; sid:1;) > I started a web server, serving the file testing.txt > listening in the port 8000, and issue a GET from a > web-browser, but the SNORT didn't create a file called > testing with the packet capture. > Instead it created a snort.log.1231243 with this > information. > 2) I ran SNORT with user root (just to make sure it wasn't a > permission problem) > 3) I pre-created the file testing with: > "touch /var/log/snort/testing" (because I read there were > problems in the past with this). But the file was 0 bytes > after the GET was issued. > 4) I tried changing the place of the logto keyword, (first > of all other keyword, after the last keyword, etc.) nothing. > 5) I tried with: > logto:"testing" > logto:testing > logto:"/var/log/snort/testing" > But nothing worked. > 6) When I changed the rule to this line: > output alert_fast: /var/log/snort/alerts > alert tcp any any <> any 8000 (content:"testing"; nocase; > msg:"rule successful triggered"; sid:1;) > It did generate the rule message "rule successful triggered" > in /var/log/snort/alerts after issueing a GET with a > browser. That's how I know it's being triggered correctly. > But for some reason, the problem is when I try to use the > logto. > Does anyone has this post-detection keyword working? Does > anyone experienced some trouble with it? > I review all the 41 related mails in the snort-users list, > but there's nothing there that helped me. > I also think that could be useful the way I start the > snort, I just reduced it to: > snort -k none -i eth0 -c /etc/snort/snort.conf > Is there anything I'm missing? I read once and again the > snort manual, but there's nothing else I could find that > give me a hint on this. > Thanks in advance for any help you could give me on that. > Emiliano. Betting you have something like this: output unified2: In your snort.conf. Per the docs: 3.7.1 logto The logto keyword tells Snort to log all packets that trigger this rule to a special output log file. This is especially handy for combining data from things like NMAP activity, HTTP CGI scans, etc. It should be noted that this option does not work when Snort is in binary logging mode. Unified is binary mode, so it looks like logging unified isn't going to work in conjunction with logto. Can someone on the list confirm this? James
Well there goes that idea then. I'll defer to someone else on the list then. James
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Current thread:
- Post-Detection keyword [logto] not working Emiliano Fausto (Apr 13)
- Re: Post-Detection keyword [logto] not working James Lay (Apr 13)
- Re: Post-Detection keyword [logto] not working Emiliano Fausto (Apr 13)
- Re: Post-Detection keyword [logto] not working James Lay (Apr 14)
- Re: Post-Detection keyword [logto] not working Emiliano Fausto (Apr 16)
- Re: Post-Detection keyword [logto] not working Al Lewis (allewi) (Apr 16)
- Re: Post-Detection keyword [logto] not working Emiliano Fausto (Apr 17)
- Re: Post-Detection keyword [logto] not working Emiliano Fausto (Apr 13)
- Re: Post-Detection keyword [logto] not working James Lay (Apr 13)