Intrusion Detection System, a system for detecting and alerting based on behavior.

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5
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1answer
153 views

Ideas on how I can fragment captured network traffic?

I am trying to create a lab environment where I can analyze common IDS solutions (starting with Snort specifically) and their ability to reassemble fragmented IP trains. I have a collection of ...
2
votes
1answer
31 views

SNORT sfportscan alert format

How can I modify the output alert from sfportscan ? Ex : output alert_csv: /var/log/snort/portscan.log timestamp,src,dst,dstport,msg OBS: I can set output for default alert file with this method ?
2
votes
0answers
75 views

Decrypt TLS from an IDS

So I am trying to figure out what the packet payload is off of a possible TLS HeartBleed alert from my IDS. I have read that Wireshark is able to do it with some certain keys, but isn't that in real ...
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0answers
420 views

Security Onion:snorby alerts shows all local nerwork source IP(public and private)

I have just installed Security Onion distro based on ubuntu. This distro does a great job of combining multiple tools like snort/suricata,sguil,snorby,elsa,bro ids,squert. In my Security Onion ...
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0answers
45 views

How to test OSSEC HIDS using a linux dataset containing raw system call traces?

I have been tasked to test effectiveness of OSSEC HIDS (by effectiveness I mean detection rate it achieves as well as false positives rate) when a dataset of raw system call traces are used. The ...
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0answers
79 views

Host-based security architecture for web server network

I am begining with network security and after studying for a while about often used technologies I got to this architecture for my home server (sorry it is not in english). I considered 3 basic ...
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0answers
204 views

OSSEC not detecting deleted files?

I have configured 3 VMs: ossec server and two agents in CentOS 6 and Windows 2k8 R2. I have completed the setup and FIM and Log Management works smoothly. It also reports the new files. However, it ...
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0answers
285 views

Difference IDS/IPS layer 2 or 3

I understand that an IDS/IPS working on layer 2 has more insight into what is going on. But considering IDS/IPS evasions, why is a layer 2 device preferable as compared to a layer 3 device that is ...
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0answers
437 views

Snort not showing dropped/blocked packets

This question is about SNORT- I m basically trying to detect PING FLOOD attack. I have included the rule**(drop icmp any any -> any any (itype:8; threshold, track by_src, count 20, ...
1
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0answers
122 views

State transition Analysis Technique

As far as I have read and understood STAT is a concept used to design a platform independent IDS. My doubt is whether there exists any compiler/interpreter for STAT Language as I am planning to do a ...
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0answers
20 views

Security Data Analytics - Classical Measurements/Metrics

for my new Job I have to prepare information about how Security Data Analysis is actually use in practice. So my question is if someone can provide me with measurements/metrics/queries (don't really ...
0
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0answers
185 views

problem with my snort rule

I have written this rule but when I try to reload Snort it is failing. I have commented out the rule and reloaded snort; it is working so I know it's the rule. alert tcp any any -> any 5466 ...
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0answers
45 views

Possible to run snort without modifiers?

Is there anyway (e.g some command line argument) with which we can tell snort to run and perform detection but without caring for the rule modifiers if there are any ? e.g alert tcp any any -> ...
0
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0answers
123 views

SSL Certificate and IDS\IPS

I'm currently drafting an infrastructure design to provide web (internet) access to a number of users to an internal web server in our perimeter DMZ, we have no direct internet access but we do have a ...