Hi, I'm also new to snort… I'm just wondering if there is any easier way to search for a rule. I have a lot of them and when I want to review one upon an alert, I have to do find the matching one by hand.. The same with suppression....

CPU usage on my Atom D525 X64 with Snort enabled is really low, like 1%

This is not an issue anymore.  After upgrading to pfSense 2.0, I can set up my configuration so I don't need to run Snort on the LAN interface.  Thanks

Hello I have had exactly the same issue while updaing to one of post RC3 snapshots. Whole upgrade proces take about 6 hours to complete and looping screens was quite annoing, but when it finished system working stable till now. Now, when we have the final release, I will install fresh system and will restore from backup file Regards

You can use all: I've set this scenario some times and it worked very well. Https -> haproxy –--                             |---> apache + modsecurity -->  webserver Http -> varnish ------ You can Also set this: Apache+modsecurity ---> varnish --->  web servers(/test)                                            |-----> Web servers (/test2) In this case, apache handles ssl. Notes: Apache can do what you want but today the package Does not include this option. May be in a close future I may include this feature to gui. Varnish is faster then apache as a reverse proxy, do a test if you have time.

@jimp: Not sure what might be happening on your system, but on mine it keeps the settings when I uninstall it, reinstall it, or upgrade. Same here…. All fine.

@stvboyle: I seem to be having the same problem.  I'm running: 2.0-RC3  (amd64)  built on Tue Sep 6 17:46:35 EDT 2011 Installed snort, configured updates, enabled a WAN interface, enabled all preprocessors, enabled some rules, started it on the interface.  Its been running for about 12 hours now and no alerts.  Not sure how to troubleshoot the issue.  Any suggestions are appreciated. Have a look at http://forum.pfsense.org/index.php/topic,37557.285/topicseen.html for the cause and the solution of this issue.

@photonman: @serialdie: you can use ntop. Ntop is pretty cool…I think that will work out for me. thanks for the suggestion Been using it for a few years and is an awesome monitoring tool. Good Luck!

Perfect! It works! Hope to see soon an updated version of the cool package. Thanks again Romain

If you are using auth and msn client can't use your authentication method, you will ser this error. Check in log if urls that has a tcp_miss has also a username. You may need To create An acl by client address and map msn urls.

any update on this package? is this dead already?

You got a l7 filter to make this.

the widget has not work for some time now… at least 8+ months on the 2.0 branch... clearing alerts was reported a while ago and there is a ticket on it already http://redmine.pfsense.org/issues/1765

You can also try memory cache, its faster then Disk. With a lot of sites setting sessions, squid is not so efficient To handle this.

I'm all set, now… When I made it back to my test network earlier today there were system log entries on the pfSense box showing the ethernet interfaces had been restarted. The reason they restarted on their own while I was doing other things is a mystery to me, but they did restart. Shortly after that, Snort kicked off successfully for both interfaces I set it up on and was running just fine. Again, not sure why it decided to start right up on its own, but I had asked it to start repeatedly before working on other things, so maybe it just did what I told it to as soon as it could.  ??? I notice it clearly states on the Snort service web-interface that the interfaces will need to be restarted to pick up changes. Changes like just installing it to configuring it to run for the first time, say? Nice  ;D Once I had a running Snort install and the correct arguments for 'ps', it was easy to answer my own questions.

one possible cause for this that i have found: I was testing the cron command that updates the rules by running it manually.  The first time i got a few duplicate SID warnings.  I went and disabled a few rules and re-enabled them and ran it again and got a bit different output. Line 15 is: enablesid Line 19 is: disablesid I then went and disabled/reenabled a few more rules, and when i ran the update command i got more of the WARNING: line xx in your oinkmaster_blah.conf is invalid.  All of the warning lines were either "enablesid" or "disablesid" with nothing more. Each time i disabled a rule and ran the update, it would add one more "disablesid" to the /usr/local/etc/snort/snort_<interface_id>/oinkmaster_<interface_id>.conf file and each time i enabled a rule and ran the update it would add one more "enablesid" to the same file. I'm not sure how this relates to the problem, but it seems like snort is not able to keep track of which rules are enabled/disabled properly and when it merges the updates with the current rules it formats them in a way that the web interface cannot handle. Output below and the oinkmaster_blah.conf at the bottom: first time: [2.1-DEVELOPMENT][admin@pfsense]/root(19): /usr/local/bin/php -f /usr/local/pkg/snort/snort_check_for_rule_updates.php >> /tmp/snort_update.log WARNING: duplicate SID: 3017 (discarding old) WARNING: duplicate SID: 17462 (discarding old) cp: /usr/local/etc/snort/generators: No such file or directory cp: /usr/local/etc/snort/sid: No such file or directory rm: /usr/local/etc/snort/tmp/rules_bk: No such file or directory ls: /tmp/snort.sh.pid: No such file or directory rm: /tmp/snort_download_halt.pid: No such file or directory second time: [2.1-DEVELOPMENT][admin@pfsense]/root(19): /usr/local/bin/php -f /usr/local/pkg/snort/snort_check_for_rule_updates.php >> /tmp/snort_update.log WARNING: duplicate SID: 3017 (discarding old) WARNING: duplicate SID: 17462 (discarding old) cp: /usr/local/etc/snort/generators: No such file or directory cp: /usr/local/etc/snort/sid: No such file or directory Loading /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf WARNING: line 15 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 19 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring Copying rules from /usr/local/etc/snort/rules… 76 files copied. Setting up rules structures... WARNING: duplicate SID in your local rules, SID 3017 exists multiple times, you may need to fix this manually! WARNING: duplicate SID in your local rules, SID 17462 exists multiple times, you may need to fix this manually! done. Processing downloaded rules... WARNING: duplicate SID in downloaded archive, SID=17462, only keeping rule with highest 'rev' disabled 0, enabled 0, modified 0, total=18870 Setting up rules structures... WARNING: duplicate SID in your local rules, SID 3017 exists multiple times, you may need to fix this manually! WARNING: duplicate SID in your local rules, SID 17462 exists multiple times, you may need to fix this manually! done. Comparing new files to the old ones... done. Updating local rules files... done. rm: /usr/local/etc/snort/tmp/rules_bk: No such file or directory ls: /tmp/snort.sh.pid: No such file or directory rm: /tmp/snort_download_halt.pid: No such file or directory third time: [2.1-DEVELOPMENT][admin@pfsense]/root(24): /usr/local/bin/php -f /usr/local/pkg/snort/snort_check_for_rule_updates.php >> /tmp/snort_update.log WARNING: duplicate SID: 3017 (discarding old) WARNING: duplicate SID: 17462 (discarding old) cp: /usr/local/etc/snort/generators: No such file or directory cp: /usr/local/etc/snort/sid: No such file or directory Loading /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf WARNING: line 15 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 16 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 17 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 18 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 19 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 20 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 21 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 22 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 26 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 27 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 28 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 29 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 30 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 31 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 32 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 33 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring Copying rules from /usr/local/etc/snort/rules… 76 files copied. Setting up rules structures... WARNING: duplicate SID in your local rules, SID 3017 exists multiple times, you may need to fix this manually! WARNING: duplicate SID in your local rules, SID 17462 exists multiple times, you may need to fix this manually! done. Processing downloaded rules... WARNING: duplicate SID in downloaded archive, SID=17462, only keeping rule with highest 'rev' disabled 0, enabled 0, modified 0, total=18870 Setting up rules structures... WARNING: duplicate SID in your local rules, SID 3017 exists multiple times, you may need to fix this manually! WARNING: duplicate SID in your local rules, SID 17462 exists multiple times, you may need to fix this manually! done. Comparing new files to the old ones... done. Updating local rules files... done. rm: /usr/local/etc/snort/tmp/rules_bk: No such file or directory ls: /tmp/snort.sh.pid: No such file or directory rm: /tmp/snort_download_halt.pid: No such file or directory fourth time: [2.1-DEVELOPMENT][admin@pfsense]/root(33): /usr/local/bin/php -f /usr/local/pkg/snort/snort_check_for_rule_updates.php >> /tmp/snort_update.log WARNING: duplicate SID: 3017 (discarding old) WARNING: duplicate SID: 17462 (discarding old) cp: /usr/local/etc/snort/generators: No such file or directory cp: /usr/local/etc/snort/sid: No such file or directory Loading /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf WARNING: line 15 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 16 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 17 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 18 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 19 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 20 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 21 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 22 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 23 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 27 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 28 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 29 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 30 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 31 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 32 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 33 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 34 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring WARNING: line 35 in /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf is invalid, ignoring Copying rules from /usr/local/etc/snort/rules… 76 files copied. Setting up rules structures... WARNING: duplicate SID in your local rules, SID 3017 exists multiple times, you may need to fix this manually! WARNING: duplicate SID in your local rules, SID 17462 exists multiple times, you may need to fix this manually! done. Processing downloaded rules... WARNING: duplicate SID in downloaded archive, SID=17462, only keeping rule with highest 'rev' disabled 0, enabled 0, modified 0, total=18870 Setting up rules structures... WARNING: duplicate SID in your local rules, SID 3017 exists multiple times, you may need to fix this manually! WARNING: duplicate SID in your local rules, SID 17462 exists multiple times, you may need to fix this manually! done. Comparing new files to the old ones... done. Updating local rules files... done. rm: /usr/local/etc/snort/tmp/rules_bk: No such file or directory ls: /tmp/snort.sh.pid: No such file or directory rm: /tmp/snort_download_halt.pid: No such file or directory [2.1-DEVELOPMENT][admin@pfsense]/root(35): cat /usr/local/etc/snort/snort_49866_em0/oinkmaster_49866_em0.conf ########################################### #                                         # this is auto generated on snort updates #                                         # ########################################### path = /bin:/usr/bin:/usr/local/bin update_files = .rules$|.config$|.conf$|.txt$|.map$ url = dir:///usr/local/etc/snort/rules enablesid enablesid enablesid enablesid enablesid enablesid enablesid enablesid enablesid disablesid disablesid disablesid disablesid disablesid disablesid disablesid disablesid disablesid</interface_id></interface_id>

I've been running 2.0-RC3 (i386) built on Sat Sep 10 17:10:54 EDT 2011 for 2 days, 03:19 w/ no exits and limited rule categories.  So far so good.  I'm hopeful that 2.0 final will workout fine since seeing swinn's post. [image: snort-categories-firewall.jpg] [image: snort-categories-firewall.jpg_thumb] [image: snort-categories-firewall2.jpg] [image: snort-categories-firewall2.jpg_thumb]