Problem SNORT 2.9.1 pkg v. 2.1

darklogic

Updated to Snort 2.9.1 pkg v. 2.0.2

Supprise Suprise,

Same issue with this stable version of SNORT. When block offenders is checked, the SNORT service will not start.

trvsecurity

We have EXACTLY the same issues - as soon as we try to "block hosts", Snort fails to start. There must be many many others around the world where their IDS security protection has just failed!!

Does anyone have a precise date / time when the corrected version will be released and available to install on PFSENSE?

Thanks!

catfish99

In the meantime, does anyone know how to modify the snort2c table so that the updated snort can be made to work?

trvsecurity

I have never been able to get the automatic rule update to function with any version. I have always had to update the rules with a manual update.

To be honest, Snort on PFSENSE worries me from a testing point of view. We have used it for 2 years now and it's nice when it works. However, even the most basic testing would have found the current errors (especially that the product fails completely when it is set to "block hosts").

I hope they get this sorted soon!!

dhatz

@trvsecurity:

To be honest, Snort on PFSENSE worries me from a testing point of view. However, even the most basic testing would have found the current errors (especially that the product fails completely when it is set to "block hosts").

Indeed the pfsense Snort package has been having problems for several months.

But keep in mind that most packages are not maintained by the pfsense core developers, so the quality control isn't necessarily the same as the base system.

I guess priorities are a matter of funding.

antilog

Offender blocking still offline as of 2:53 PM EST.

ccb056

having the same problem…...

FATAL ERROR: pf.conf => Table snort2c,src,kill don't exists in packet filter

looks like the file pf.conf should be in /etc/pf.conf but I can't seem to find it there on my pfsense box

http://www.freebsd.org/doc/handbook/firewalls-pf.html
http://www.openbsd.org/cgi-bin/man.cgi?query=pf.conf&apropos=0&sektion=0&manpath=OpenBSD+Current&arch=i386&format=html

if the file isnt where its supposed to be no wonder snort cant find the table.....

Cino

the binaries didn't build last night. I heard that they are being built now. We just have to wait until they are built.

When it comes to snort, if you see a new version and don't understand pfsense and freebsd that well, wait till there is an announcement or experience users confirming that it works before re-installing.

other then barnyard, snort has been very stable for the last month.. Once in a while it has to be restarted on my box but only when I'm doing heavy heavy bit-torrent downloading..

dwood

I'm wondering if it's possible to make the package "publishing" via the GUI the last step? In other words, remove the installation option entirely until the binaries and code etc. have been pushed to the update server?

I check the packages regularly via the PF GUI, and if an update is there, tend to install it. The downside is that in cases like this, you can't go back and install the previous package. That said, I remain very impressed with PF in general since pulling the pin on the previous routers. Kudos to all in the chain.

Cino, can you describe (with a link or two if possible :-) ) the process you used to check github?

ccb056

or add automatic checksum comparison to the package manager, this would prevent this problem and any man-in-middle attacks

Cino

Check out the github site for pfsense. There u can see the old changes and new ones.

dwood

Cino, is there a newby guide to checking github for snort? I had a look here but beyond that, no idea on what to do beyond that: https://github.com/pfsense/pfsense

Cino

there isn't and it would take me a while to make one..

the changes where done here https://github.com/pfsense/pfsense-packages/commit/e4c13a5752c5f7b4947edbc4227b005cd333566d You will have to manually edit the files.. Remove what is in green and add what is in red.. There is way to download the whole file it a few steps.

see if this helps everyone:

/usr/local/pkg/snort/snort.inc

https://raw.github.com/pfsense/pfsense-packages/3b0730f14734da787f673bd81260f7c65f8c882e/config/snort/snort.inc

/usr/local/www/snort/snort_interfaces_edit.php

https://github.com/pfsense/pfsense-packages/raw/3b0730f14734da787f673bd81260f7c65f8c882e/config/snort/snort_interfaces_edit.php

catfish99

Thanks Cino, that did the trick !

I can now turn on Snort blocking :)

Here's the steps for the Newbies…

SSH to the pfsense machine
select 8) Shell
cd /usr/local/pkg/snort/
cp snort.inc snort.inc.bk
fetch https://raw.github.com/pfsense/pfsense-packages/3b0730f14734da787f673bd81260f7c65f8c882e/config/snort/snort.inc
cd /usr/local/www/snort/
cp snort_interfaces_edit.php snort_interfaces_edit.php.bk
fetch https://github.com/pfsense/pfsense-packages/raw/3b0730f14734da787f673bd81260f7c65f8c882e/config/snort/snort_interfaces_edit.php

Exit shell and try things out. If all works, then go back to shell and remove the two backup copies of the files (ie. rm the .bk files )

Curious if it works for others as well.

@Cino:

there isn't and it would take me a while to make one..

the changes where done here https://github.com/pfsense/pfsense-packages/commit/e4c13a5752c5f7b4947edbc4227b005cd333566d You will have to manually edit the files.. Remove what is in green and add what is in red.. There is way to download the whole file it a few steps.

see if this helps everyone:

/usr/local/pkg/snort/snort.inc

https://raw.github.com/pfsense/pfsense-packages/3b0730f14734da787f673bd81260f7c65f8c882e/config/snort/snort.inc

/usr/local/www/snort/snort_interfaces_edit.php

https://github.com/pfsense/pfsense-packages/raw/3b0730f14734da787f673bd81260f7c65f8c882e/config/snort/snort_interfaces_edit.php

trvsecurity

I have just changed the two files you mention and the problem seems the same. I am still getting the following error when I try to start Snort with "block offenders" on:

snort[12668]: FATAL ERROR: pf.conf => Table snort2c,, don't exists in packet filter

Any ideas?

Cino

binaries seem to be in but there are some issues..

@emarl The GUI doesn't have anything for the "Which ip to block" field under If Setting. Going to see if I can manually edit the conf file and see if I can get it to start when i have block offenders enabled.

log:


Jan 26 20:27:50 	snort[52895]: FATAL ERROR: snort.conf => No option on which ip to block src/dst/both: Unknown error: 0
Jan 26 20:27:50 	snort[52895]: FATAL ERROR: snort.conf => No option on which ip to block src/dst/both: Unknown error: 0

conf line is missing the new option:


output alert_pf: /usr/local/etc/snort/whitelist/MainWhiteList,snort2c,,

Still have to manually add the barnyard2 binary and add "portvar FILE_DATA_PORTS [$HTTP_PORTS,110,143]" under the advance

Edit: If i have Kill States enabled, snort to start..


	output alert_pf: /usr/local/etc/snort/whitelist/MainWhiteList,snort2c,,kill

trvsecurity

When you say that the binaries are there, does this mean that they will be used to install Snort in PFSENSE from the GUI? I have just reinstalled Snort and I still get the old error:

snort[48751]: FATAL ERROR: pf.conf => Table snort2c,,kill don't exists in packet filter

I still still version 2.02 when it should be version 2.1 I think?

Cino

there is new timestamp, you can check here http://files.pfsense.org/packages/8/All/. Because the way my box is setup, i have to manually add binaries after using the package gui.

dwood

The first time I "upgraded" to the new 2.1 version of SNORT I had three options under "Which IP to block"… SRC, DEST. and BOTH. They're not there now.

ccb056

@catfish99:

Thanks Cino, that did the trick !

I can now turn on Snort blocking :)

Here's the steps for the Newbies…

SSH to the pfsense machine

select 8) Shell

cd /usr/local/pkg/snort/

cp snort.inc snort.inc.bk

fetch https://raw.github.com/pfsense/pfsense-packages/3b0730f14734da787f673bd81260f7c65f8c882e/config/snort/snort.inc

cd /usr/local/www/snort/

cp snort_interfaces_edit.php snort_interfaces_edit.php.bk

fetch https://github.com/pfsense/pfsense-packages/raw/3b0730f14734da787f673bd81260f7c65f8c882e/config/snort/snort_interfaces_edit.php

Exit shell and try things out. If all works, then go back to shell and remove the two backup copies of the files (ie. rm the .bk files )

Curious if it works for others as well.

thanks catfish, i followed your instrustions and snort is working with the old gui!
one thing to note is i went to services in the gui and stopped the snort service before everything else, then ran your instructions, checked 'block offenders', and started snort without problems