Cisco IPS: Anomaly detection Introduction

Introduction Cisco IPS 4240 establishes a baseline (normal traffic) and uses this baseline to check for deviation from traffic patterns to determine if there is anomaly in the network. This detection technique mainly detects worm attacks originated from host/s in the network. Worm propagated by email, instant messages and file sharing cannot be detected by … Continue reading Cisco IPS: Anomaly detection Introduction →

Cisco IPS: Allowing Global Correlation update through ASA5505

Management only interface Cisco ASA has a management only interface which you have to disable in order to allow IPS to get global correlation update. management-only command denies traffic that is not destined to the ASA itself. IPS that connects to management-only interface will never get updates from the internet. Conditional NAT ASA5505 allows you … Continue reading Cisco IPS: Allowing Global Correlation update through ASA5505 →

Cisco IPS: Inline Vlan Pair

Inline Vlan Pair scenario Traffic between Vlan 10 and 20 has to be inspected by IPS, in order to achieve this and to save valuable IPS interface inline vlan pair mode is selected for this setup. Step by step explanation on how the traffic flow works 1. Attacker initiates an attack from vlan 10, the … Continue reading Cisco IPS: Inline Vlan Pair →

Cisco IPS: Always boot into ROMMON

Introduction I bought a Cisco IPS 4240 at a very good price from Ebay, Cisco IPS arrived my home last night, I was excited and looking forward to use this appliance immediately. To my disappointment, Cisco IPS persistently boot into ROMMON. I re-image the appliance, and saw the installation was successful, i was hopeful that … Continue reading Cisco IPS: Always boot into ROMMON →

IPS: Update sid-msg.map

Reference: http://oinkmaster.sourceforge.net/faq.shtml You need to update the sid-msg.map in order for the events to show its description, if sid-msg.map is not updated the events will be like Snort Alert [1:19187:2]. To update the sid-msg.map download the tar file from oinkmaster. Inside the tar file contains a perl script create-sidmap.pl. Use this perl script to update … Continue reading IPS: Update sid-msg.map →

IPS: Snort

Tested systems 1. CentOS 6.4 32-bit, kernel version 2.6.32-358.2.1.el6.i686. 2. CentOS 6.4 32-bit, kernel version 2.6.32.60-grsec (grsec patched kernel) 3. Virtualbox version 4.2.10. 4. Snort engine version 2.9.4. Snort rules version 2940. Reference guide There are numerous installation guide over the internet, however the guide written by nachum234 is by far the best of the … Continue reading IPS: Snort →

Cisco Systems: IPS4360 Test case

Intrusion detection and prevention test This post demonstrate an example on how to do IPS factory acceptance test. Test plan parameters example Product:IPS4360-K9 Serial Number: abcdefg Date:27/Jan/2013 Purpose: This test is to test the ability for IPS to block malicious when a signature is matched. Procedure: On the attacker PC launch metasploit. Launch an attack … Continue reading Cisco Systems: IPS4360 Test case →