Intrusion Detection Systems

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Affordable FIM, log monitoring, policy enforcement/checking, IDS?

I've been working with OSSEC for awhile, and it's just been head ache. What are some linux Intrusion Detection Systems that do File Integrity Monitoring, Log Monitoring, and policy enforcement (same ...
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1answer
14 views

Query on IPS reports

In the IPS reports i see multiple counts of the same exploit from the same source ip. I wonder why would someone continue to attempt exploiting a vulnerability when he must have realized in the first ...
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1answer
36 views

Nil events in IPS reports today [closed]

The IPS reports have one or two events minimum every day so far. But today there were no events, both in DC1 and DC2 reports. I am wondering if this possible? How come on a particular day nobody ...
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1answer
45 views

Intrusion Detection System and Network Intrusion Detection Systems [duplicate]

IDS (Intrusion Detection System), NIDS (Network Intrusion Detection System) What's the difference between IDS and NIDS? Can i use more than one IDS and NIDS at the same time? Or both IDS and NIDS ...
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47 views

I'm looking for a decent book on network and infrastructure security [closed]

I'm currently looking for a decent book on network and infrastructure security (especially in the enterprise context). Could you point me to one or two recent books, please? Thanks a lot in advance! ...
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38 views

How to make sense of, and act on, Snort Rules?

I am a relatively new Snort user with years of sys admin experience. I feel that I must be missing something, because I find Snort rules to be completely undocumented and incomprehensible. Because of ...
4
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1answer
103 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 ...
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1answer
51 views

Snort - Rule: Alert all php requests

I am trying to understand writing rules for snort. Further goal is detection of sql injections like here. I've read the documentation of snort rules and created this rule: alert tcp any any -> ...
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17 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 ...
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3answers
2k views

Power friendly home router, firewall, IDS/IPS setup? [closed]

For those that like to manage their own firewall and run IDS/IPS on their home networks, I'm curious - what are you using and is it power friendly? I used to have a shelf full systems doing various ...
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26 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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2answers
64 views

NIDS/NIPS vs HIDS/HIPS

Can we interchangeably deploy a HIDS or HIPS instead of a NIDS/NIPS, what would be the risks, for example you have Symanetec EPS modules with HIPS policies enabled how are they different from a ...
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1answer
2k views

New to ossec - what does active response do out of the box

I am new to ossec. I installed the server and wui on a dedicated machine. I have agents running on my zookeeper and kafka servers to start. Below are events I am seeing. I assume the are ...
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2answers
283 views

Security model for datacenters

I have several datacentres and now I want to plan security for it, so it's resilient to external attacks. I need to make a security model which will cover my web servers, auth servers, log servers, ...
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52 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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4answers
665 views

Evading IDS in exploit development

In the context of buffer overflow exploit development, I was asked: Discuss how your exploit may be modified to evade an Intrusion Detection System. I'm not asking for my homework to be done, but ...
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2answers
2k views

Event monitoring for a home network

I'd like to utilise some of the free SIEM type products out there to increase the chances that I will detect attacks and compromises of any of the devices on my home network. Most of my home devices ...
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2answers
54 views

Security devices other than firewall and IDS [closed]

I was just studying about firewalls and IDS/IPS and had a doubt. Are these the only two major security devices that a company invests in? or are there other equipment and security controls?
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3answers
642 views

Can the IPS technology in a UTM prevent a DDoS attack?

Does a Unified Threat Management appliance (UTM) with Intrusion Prevention (IPS) enabled have the ability to prevent a DDoS attack? I have read some articles and none of them have a perfect ...
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61 views

Snort: Arpspoof preprocessor events not showing up in BASE UI

I have followed this guide to install Snort, using Barnyard2, BASE, IIS, and MySql. My Snort is up & running and loads of events are being logged. After weeding out some false positives, I wanted ...
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0answers
78 views

Snort alerts analysis (web interface) [closed]

I have a question about Snort (or maybe any other IDS/IPS, any working solutions would be ok). The goal is to set up some web interface providing a way to view the whole TCP stream packets of each ...
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1answer
33 views

Call For papers format help [closed]

I’m intending to submit a personal project for a “call for papers” for an upcoming Con. I have a really interesting topic that I wanted to submit for the talk. I was hoping to gain some feed back on ...
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1answer
90 views

Can Snort be configured as HIDS?

I need to give a presentation regarding Snort and Security Auditing. I have recently learned to configure Snort as a NIDS. I want to know is there any way I can configure Snort as an HIDS? If I am ...
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2answers
68 views

Detecting malicious domains/URLs [closed]

Do state of the art commercial URL threat intelligence feeds ( for example, one's by Symantec, Intel-security etc) miss malicious domains? (i.e. domains serving malware,exploit code & phishing ...
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0answers
163 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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219 views

OSSEC New Install: Scan and analyse full log?

When OSSEC is installed and started, it starts analyzing configured logs starting the date it was installed. Is there a way to have it scan and analyze the full logs?
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161 views

How to properly configure OSSEC for Web Application Security ?

I would like to implement OSSEC as HIDS on my server, but by default OSSIC monitors a number of folders. I am going to deploy a web application on my server. So what should be my default OSSEC ...
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2answers
437 views

OSSEC on an existing running machine

I am setting up a OSSEC on existing running machine. From my research I find that I should be running the following command to check for previous intrusion. zcat /var/log/*.gz | ...
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3answers
81 views

IDS over HTTPS connection

I am designing an anomaly-based intrusion detection system in java. It basically consists of a sniffer that identifies HTTP header fields and then analyze them according to a previous configured XML ...
2
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1answer
50 views

I want to filter Snort rules by date written [closed]

I would like the ability to look at Snort rules that were written in specific date ranges only given a collection of .rules files from either Sourcefire or Emerging Threats. Is this possible?
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60 views

Customize an Intrusion Detection System for serial communication

Most of the Intrusion detection Systems I know of is for IP Communication. But, lets assume that I have serial communication, i.e. CAN or RS485. On this serial Communication there are customized ...
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1answer
186 views

Is it possible to detect a keylogger, when placed? [duplicate]

Can you detect a keylogger when it is placed? Would it be possible to do that via a keyboard removed event, expecting the keyboard is not removed regularly? So that you for example get a pop-up/alert ...
2
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0answers
70 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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146 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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1answer
189 views

Setting up own enterprise SOC

the other day I was talking with a service provider (MSSP) who have experience with operating SOC (security operations centre) 24x7. Their price was rather steep (in the millions range). I don't ...
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1answer
60 views

network IDS capabilities for attack detection [closed]

Is a Network Intrusion Detection System (NIDS) (pattern matching, protocol analysis or behavior analysis) able to detect buffer overflow in the network traffic?
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1answer
586 views

How to configure Suricata to not interfere with virtual machine [closed]

I'm currently planning on setting up Suricata as a firewall on my laptop. I'm wondering however if it's possible to set Suricata to not interfere with traffic to and from specific virtual machines ...
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1answer
52 views

Using snort with cloudflare? [closed]

How might Snort or another IDS system work with Cloudflare? Essentially, the originating IP would be CloudFlare's, therefore a proactive IPS might be difficult to install. I understand that ...
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2answers
205 views

Botnet callback patterns

I am trying to understand the network behavior of bots. Are there any identifiable characteristics of callback requests from the bot to the C&C server which differentiates it from normal traffic? ...
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3answers
150 views

Why Bash Shellshock vulnerability cannot be detected at webservers in advance?

There are lots of posts regarding the shellshock vulnerability. I can understand the vulnerability in detail. However, I'm curious about why any Intrusion detection system or host-based tools (e.g., ...
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1answer
81 views

What could this set of IDS alerts be (DDNS deaftone.com darktech.org chatnook.com, …)?

Below is a screeny of my Squert GUI showing the Snort events. Notice they all happen at the same exact time. I cannot figure out what the source of it could be. Any ideas? Edit: It looks like the ...
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1answer
72 views

Can Sagan block active acts once they've been detected?

I'm trying to determine if Sagan can do anything similar to fail2ban where detected attacks can be temporarily blacklisted, via a system's firewall (iptables). Does Sagan have any "countermeasures" or ...
2
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1answer
462 views

Snort IDS for Amazon deployment

Is Snort a good choice for monitoring network and web application traffic on Amazon EC2? If not, why and what IDS would you suggest? Is Snort a good choice to monitor for XSS, Sql Injection, attempt ...
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1k views

What techniques and tools do you use to relate security events?

You have central logging going, detailed app logging/alerting (e.g. modsec), network based security alerting (e.g. snort), and whatever else feeding your observation deck. Do you have any cool ...
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42 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 -> ...
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102 views

Recommendations for installing OSSIM

I'm an apprentice in web security and I was assigned with the task of researching about OSSIM. Bear with my infinite ignorance as I take my questions to the stack exchange gurus. What I know so far: ...
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2answers
164 views

List of security products for my network [closed]

We are building and environment where mostly open source and trial versions would be used first before we purchase any product. I need your recommendation on the tools required to build a network that ...
3
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1answer
153 views

Anomaly intrusion detection

Anyone know which opensource network IDSs are using anomaly techniques? My project is to compare them, so if you could give me some hints, that would be much appreciated. Currently, I am looking at ...
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2answers
870 views

What are the difference between IPS and WAF in terms of DDoS?

I have heard about both Web Application Firewalls (WAF) and Intrusion Prevention Systems (IPS). Which is better in preventing a Distributed Denial of Service (DDoS) attack and why?
2
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1answer
398 views

Snort Rule Writing (Alert Fires But Traffic Does Not Match *Intended* Rule)

I have the following rule: alert tcp $HOME_NET any > $EXTERNAL_NET any (msg:"This should not happen"; flow:established,to_server; content:"GET "; depth:4; content:"Set-Cookie:"; http_header; ...