Re: Using snort to detect if your users are doing interesting things?

2005-06-10 Thread Nils Ketelsen
Drew Weaver wrote: Howdy, I am not sure if this is the proper place, if not I've noticed you guys know what to do so I'll put the fire retardant suit on now. Recently due to growth we have seen an influx of different and interesting types of characters ending up on our network.

Re: Using snort to detect if your users are doing interesting things?

2005-06-10 Thread Jeroen Massar
On Thu, 2005-06-09 at 23:29 +0300, Kim Onnel wrote: How about project Darknet and sinkholes and monitoring dark ip space, worms and botnets usually scans blindly right and left, so there is a good chance you will get a glimpse on infected hosts if thats what you want, i catch infected hosts by

Using snort to detect if your users are doing interesting things?

2005-06-09 Thread Drew Weaver
Howdy, I am not sure if this is the proper place, if not Ive noticed you guys know what to do so Ill put the fire retardant suit on now. Recently due to growth we have seen an influx of different and interesting types of characters ending up on our network. They like to do all sorts of

Re: Using snort to detect if your users are doing interesting things?

2005-06-09 Thread trainier
As it was already noted, you need to be very careful about how you set your IDS up, specifically if you choose snort. Snort is a very powerful tool, when used correctly. Unfortunately, when used incorrectly, it can hose your network over completely. My suggestion, in the case that you'll use

Re: Using snort to detect if your users are doing interesting things?

2005-06-09 Thread Sam Hayes Merritt, III
I'm wondering what is the best way to detect people doing these things on my end. I realize there are methods to protect myself from people attacking from the outside but I'm not real sure how to pinpoint who is really being loud on the inside. One of the best things we did was setup a

Re: Using snort to detect if your users are doing interesting things?

2005-06-09 Thread Steven M. Bellovin
In message [EMAIL PROTECTED] ec.com, [EMAIL PROTECTED] writes: As it was already noted, you need to be very careful about how you set your IDS up, specifically if you choose snort. Snort is a very powerful tool, when used correctly. Unfortunately, when used incorrectly, it can hose your

RE: Using snort to detect if your users are doing interesting things?

2005-06-09 Thread Jordan Medlen
We just finished deploying a Snort IDS system on our network. The task of doing so was well worth the effort, and quite a bit of effort and resources were needed for our deployment. Due to the fact that we have a sustained 5Gbps of traffic to monitor in our Tampa data center alone, a

Re: Using snort to detect if your users are doing interesting things?

2005-06-09 Thread Christian Kuhtz
Title: Re: Using snort to detect if your users are doing interesting things? And when you do set up such an arrangement, depending on the number of rules you turn on, you can generate truly massive volumes of data to be analyzed by ACID or other tools. It is relatively easy to deploy snort for

Re: Using snort to detect if your users are doing interesting things?

2005-06-09 Thread Christian Kuhtz
On 6/9/05 12:08 PM, Steven M. Bellovin [EMAIL PROTECTED] wrote: Also figure out what you're going to do with the output. Do you have the resources to investigate apparent misbehavior? Remember that any IDS will have a certain false positive rate. Even for true positives, do you have the

Re: Using snort to detect if your users are doing interesting things?

2005-06-09 Thread Randy Bush
My suggestion, in the case that you'll use snort, is to do some extensive testing on a non-production network. Take the time to learn and understand its functionality and intended purpose. Also figure out what you're going to do with the output. Do you have the resources to investigate

Re: Using snort to detect if your users are doing interesting things?

2005-06-09 Thread Kim Onnel
How about project Darknet and sinkholes and monitoring dark ip space, worms and botnets usually scans blindly right and left, so there is a good chance you will get a glimpse on infected hosts if thats what you want, i catch infected hosts by looking at apache access logs and i see alot of scans,