Tagged Questions

An intrusion detection system (IDS) is a device or software application that monitors network and/or system activities for malicious activities or policy violations and produces reports to a Management Station.

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15 views

Barnyard2 error on start

Been setting up a snort box with barnyard2, run into the error below. Can someone please help? $Starting Snort Output Processor (barnyard2): ./barnyard2: 35: ./barnyard2: barnyard2: not found ...
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0answers
46 views

IPFire configuration as IDS behind router

I want to use an IPFire-Server primarily as an IDS behind an already existing router. The network's router (192.168.1.1) has access to the Internet and provides LAN-Slots for the clients. There is ...
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0answers
29 views

Windows Snort remote MSSQL

I have to setup snort on a Windows 2012 machine. Snort works fine. However, I am supposed to write all logs to a Microsoft Database Server 2012 on a different VM. However, at the moment I cannot ...
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0answers
8 views

Samhain log monitoring rules

The Samhain system offers a log correlation facility, but I can't find any rule sets written for it, or any references to the correlation facility. Are there any Logmon rulesets I can use with my ...
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3answers
65 views

is there a PAM module for DNSBL lookups?

I have been enumerating the remaining security concerns on one of my back-end production servers, when I came to the realization that something which could be incredibly useful was missing from my ...
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2answers
72 views

Blocking geographic cities from accessing Asterisk using Secast

I am using Secast for intrusion protection on my Asterisk PBX. It’s working great, and I now want to start blocking specific geographic regions. My system is getting hammered from Ramallah ...
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0answers
54 views

configure frag3 in SNORT

i m trying to test IDS systems on evasion. I have picked up Snort IDS. I have crafted few fragmented packet scenario, and i m sending those fragmented packet to destination address. All these crafted ...
0
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1answer
28 views

How to filter errors 404 to show only those which are related to php files?

One of my web servers is getting flooded with requests to resources that do not exist anymore, generating the corresponding 404 error. As I'm using OSSEC and OSSIM, then these errors are sent to the ...
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1answer
156 views

Lean but effective linux IDS / IPS / WAF? [closed]

I'm looking for a lean but effective IDS/IDP/WAF solution for my tiny VPS webserver. Currently I already use iptables and psad but a lot of the web server scanning attempts slip through. I use ngingx ...
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3answers
376 views

Simple application level file integrity monitoring & Intrusion detection (IDS)

We've been searching for a simple file integrity monitoring solution on CentOS/Linux that will work on the application level. We are not looking for OS/network level IDS as OSSEC and the others do a ...
0
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1answer
152 views

Using Snort without a port mirrored switch

I am trying to set up a Snort IDS on a virtual machine for my lab. My problem is that normally, these kinds of IDS are connected to the mirrored port of a switch. My lab has no such device. Here is my ...
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2answers
436 views

how can a mirror all of the traffic on a network interface, to virtual interface

I am trying to setup snort to act as an ids, on a debian machine that also functions as a router. Ideally I would like to setup snort in such a way so that I would not have to purchase an additional ...
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0answers
462 views

Ubuntu 12.04 Server snort 2.9.2.3 not logging NMAP Scans after first VTR Rules update

I install snort 2.9.2.3 from the Ubuntu repositories along with Oinkmaster. I'm not running LAMP just snort for logging pcap and to the alert log file. Out of the box installation snort worked. ...
2
votes
1answer
51 views

POLICY Mozilla Multiple Products HTML href shell attempt - SNORT

We've had a few of these alerts get triggered through Snort: "POLICY Mozilla Multiple Products HTML href shell attempt" I'm struggling to find any information pertaining to this alert, does anyone ...
0
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1answer
282 views

snort intrusion detection

Hi im trying to use snort as an IDS on some pcap files I have, I was hoping I would get a log of any intrusions. I know for a fact that there is port scans and ping sweeps etc in the pcap files but ...
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2answers
2k views

OSSEC large scale deployment

We have a data-center and as a happy OSSEC user I am trying to convince my management to use it for host intrusion detection. However I have never deployed it on more than a handful of servers and I ...
1
vote
1answer
126 views

Stateful Signatures in an IPS

I am researching in-line IPS devices and their signatures both stateful and stateless. The test network I am looking to implement the IPS in has asymmetric traffic so stateful inspection would be ...
2
votes
1answer
377 views

Webserver security, intrusion detection, and file intregrity

I would like to add some type of tracking / alerting on some linux webservers running PHP and Apache. In doing searches I have come across a lot of info from 2006-2009. Would like to revisit ...
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3answers
9k views

Blocking Team Viewer

I'd like to block incoming TeamViewer connections to my network, but at the same time to allow outgoing TeamViewer connections. So that users can't connect to their work PCs with TV (circumventing ...
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3answers
324 views

To what extent can you secure a system? [closed]

To what extent can you filter/firewall for suspicious traffic or lock down a system? If you have everything up to date and secure, what can you do to protect against a 0 day? I assume an IDS might ...
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3answers
388 views

Good Firewalling practice for internet facing servers?

Does it make sense to firewall an internet facing server, say a webserver? Assuming I did not want to restrict anyone from accessing the webserver in its capacity to serve web pages, I would be ...
4
votes
2answers
2k views

Is there an appliance-style distribution with web-based configuration for Snort? [closed]

There are some great "appliance" style distributions like pfSense and M0n0wall, that bundle powerful features of their respective operating systems with a nice web application for configuration. In my ...
3
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1answer
1k views

Standalone Windows HIDS

We are looking into installing a host intrusion detection system on a Windows 2008 R2 web server. Our requirements are, at least for the time being, that the system needs to be standalone and also ...
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3answers
467 views

How to drop packets in a custom Intrusion Detection System

I'm trying to build a custom Intrusion Detection and Prevention System (IDS/IPS). I found a great utility named ROPE which can scan the packet payload and drop the packet that doesn't follow the ...
0
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2answers
110 views

last night, my server was doing something intensive with the hard drive

I have an ubuntu server running in my bedroom. It's connected to the internet. Last night, at 5am, it was doing some intensive i/o with the hard drive (I heard it) for like 20 minutes. I don't have ...
1
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1answer
578 views

Snort monitoring of spanning interface

I have configured a Cisco 3500 switch with a port SPAN and have my snort node (fedora 13) plugged into it. I am running snort as a daemon and have configured a rule to log all tcp traffic but I am ...
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vote
2answers
150 views

Web server hosting infrastructure, does IPS help?

I am working on setting up new networking for datacenter hosting a web site. We have following topology Internet -> Firewall1 -> ReverseProxy(for security) -> Web Server -> firewall2 -> databse ...
2
votes
3answers
6k views

ossec features vs snort / tripwire for pci compliance

I'm looking for an informed opinion on the advantages of ossec in comparison to snort/tripwire/nessus Therefore anyone shed any light on what features ossec brings that cant be replicated via ...
1
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4answers
438 views

What are your thoughts on whether or not to use a bastion host

I'm considering a new network layout for our web facing infrastructure and I'm interested in your thoughts of whether or not to use a bastion host. Is it necessary with today's technology? Right now ...
7
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5answers
346 views

Total SA/Engineer Management Software

So, as we've seen all over server fault, and over the years I've built several of each system, System / Network Monitoring (I use nagios) System / Network Trending (I use Cacti) Centralized Log ...
13
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11answers
3k views

Chinese Hacker-Bots attempting to exploit our systems 24/7

Our sites our constantly under attack from bots with IP addresses resolving to China, attempting to exploit our systems. While their attacks are proving unsuccessful, they are a constant drain on our ...
0
votes
1answer
1k views

SPAN/Port mirroring on Linksys switch

I'm trying to deploy a Snort box in my LAN. I have a Linksys SRW248G4 and trying to configure Port mirroring so that Snort can listen everything on the network in promiscuous mode. So in ADMIN / Port ...
3
votes
5answers
2k views

IDS for Linux?

We need to setup an intrusion detection system (IDS) on our linux proxy server. Please suggest intrusion detection systems ? anything else than Snort ? And ... does snort have a good web interface ?
3
votes
4answers
2k views

IDS for Windows Server 2008?

I am sure my Windows Server 2008 box is constantly under attack both at the network level and web application level. QUestion is How do i detect these attacks? is there any light-weight software ...
0
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1answer
464 views

What anti-virus & firewall (with IDS) should I use for a windows server machine?

I want one product to cover for Anti-virus & Firewall purposes. The product should also be lightweight and of course designed for windows server. Any suggestions? Note: I don't need an enterprise ...
5
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3answers
247 views

Is there any Linux app available for port scanning monitoring?

Something that will run in background and alert me on mail if some ip is port scanning the server.
4
votes
2answers
669 views

Updating snort rules automatically

I've been working on getting my snort machine up and running, and working through Snort IDS and IPS Toolkit. The authors suggest using Oinkmaster, but on that website, the last update was February ...
6
votes
3answers
2k views

Modern open source NIDS/HIDS and consoles?

Years back we set up an IDS solution by placing a tap in front of our exterior firewall, piping all the traffic on our DS1 through an IDS box and then sending the results off to a logging server ...
0
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3answers
251 views

Firewalling gateways and IDS's

For IDS, I plan to have a Win 2008 server running on the gateway with the majority of roles disabled. I plan to firewall the Internet connection, but I'd also like to install Snort to work as an IDS. ...