Snort is an open source network intrusion detection and prevention system (NIDS/NIPS).

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Setting up home lab with Snort and Vyatta - looking for resource recommendations or advice

I'm looking to turn a new desktop (Ubuntu 12.10-64bit) I built into a virtual home lab for testing and experimenting with various security things. The first setup I would like to try running is the ...
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3k views

Snort false positive?

I've set up snort and am configuring it for my network. I have one vpn server making a connection to my dns/AD server. This connection sets off: GPL SHELLCODE x86 inc ebx NOOP The payload is as ...
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491 views

How to write Snort rules based on MAC address?

I would like to create Snort rules based on MAC addresses instead of IP addresses. Most devices on the network are DHCP assigned, and I would like to ignore certain traffic (ex: Dropbox) for some ...
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504 views

Are there any test cases to ensure the “web-attacks.rules” snort file works correctly?

I have set up an free evaluation Confluence Server on my local host and have configured "snort.conf" to point to my localhost as "HOME_NET" environment variable. I tried to test the ICMP rule by ...
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904 views

Why aren't anomaly-based intrusion detection schemes implemented in Snort?

I have read many papers on anomaly-based network intrusion detection. Am I correct that each of their techniques could be implemented as Snort preprocessor? If this is true, why there are no anomaly ...
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Using an IPS as an alternative to mod_security

I am considering deploying mod_security as an addition to our web infrastructure. I am worried about the increased load however as these servers get a lot of hits. I am considering using IPS's such ...
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374 views

Enterprise IDS - Deployment & Uses

I am investigating deploying the Snort IDS for an enterprise environment. This environment consists of a NOC that manages several servers, mainly internal but some internet facing. There are several ...
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147 views

Taking action for exploit attempts

Just recently I see I have had about 40 hits in one second for the following Snort rule- signature id 1:16008, which corresponds to the CVE-2007-6239: "... allows remote attackers to cause a denial of ...
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686 views

Interpreting Snort's stream5 alerts

I am using snort on a mirrored switchport. We have a lot of apple devices that are downloading mp3s directly from a directory index. Snort is showing me a huge amount of, in particular, these two ...
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605 views

Open source or common implementations for reverse proxy web application security

I realize there is already a question similar to this one, but this is somewhat of a follow-up. I understand that a reverse proxy server by itself is hardly useful as a web app security measure ...
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1k views

How can an admin choose which Snort rules to enable?

The purpose is to configure Snort as an IDS to monitor network activity, and alert against the standard set of things an IDS should alert against--> buffer overflow attacks, injection attacks, port ...
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2k views

Snort & Logging

I am looking for some support on using Snort in Windows 7. My experience so far is using WireShark, so this is new territory to me. I would like to use Snort to perform a trace, which, after it ...
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Snort Sensor Placement

I have a snort sensor monitoring some of my network being fed from a mirrored port. This mirrored session only monitors traffic between the firewall and peering switch. Since this just sees traffic ...
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3answers
1k views

Reading Wireshark Result and Security Learning Recommendation

I am (not so) currently learning about security and right now I am learning about using Wireshark. I bumped into this video: ...
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1answer
613 views

Outbound TFTP request to 255.255.255.255

Recently snort notified me that I have a user's computer on my network initiating an outbound TFTP request. The odd thing is the destination is 255.255.255.255 Anyone have a clue as to what this may ...
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1answer
694 views

Help setting up Snort on Windows 7

I'm configuring Snort on Windows 7 with the help of this guy and I'm stuck at the following line in the config file: List of DNS servers on your network. I have multiple, how do I separate them? ...
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5k views

Snort rules question [closed]

I just noticed my snort rules fired today on this, on a brand new ossim server I was testing. "shellcode x86 inc ebx noo" on with the source ip from Canada. The destination was my ossim server. Any ...
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1answer
2k views

Bench marking Snort and other IDS/IPS

I am looking for facts and figures of research or surveys done which have bench-marked Snort with other IDS/IPS on various parameters like overall performance, accuracy, speed, documentation, ...
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1k views

Vulnerability scanner tools to use with Snort

We plan to add Snort with the firewall for our network to have improved security. The purpose, apart from protection from malicious traffic, is to customize Snort to detect and block specific traffic ...
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1k views

What IDS Do you recommend? [closed]

I am running a Debian Squeeze VPS and need a good IDS. I have used snort before and it was quite good but i am wandering if there are any other good ones out there. Preferably compatible with ...
4
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1answer
628 views

SSL protocol issues on OS X and iOS

I have a PfSense box as a UTM, running snort among other things. I started noticing that when MacBooks and iPhones/iPods connect to my network, the snort log gets flooded with this message: ...
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116 views

Is there a Snort rule that equates to “something suspicious flagged from a client side application?”

The reasoning is what if an enterprise monitors snort alerts more-so than say syslog. Is there a specific pre-defined alert for 'client side app says something fishy is going on'?
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502 views

Logging True/False Negatives on Snort

I'm using Snort in a lab environmnet with artificially generated traffic. I'm looking to build a confusion matrix from known generated attacks. True Positives and False Positives are easy to parse ...