Cisco ASA – I Cannot Ping External Addresses? (Troubleshooting ICMP)
KB ID 0000914 Problem Considering we use ICMP to test connectivity, the fact that it is not a stateful protocol can be a major pain! Last week one of my colleagues rang me up and said, “Can you jump on this firewall, I’ve got no comms, and I cant ping external IP addresses. I can ping the internet from the firewall and I can ping internal IP addresses form the firewall”. Solution 1. Before we start, lets get the basics...
Cisco ASA – ‘Prove it’s Not The Firewall!’
KB ID 0001049 Problem Yeah, it’s funny because it’s true! The article title might not sound like the most professional approach, but when the ‘Well it’s not working now’ finger gets pointed at the ‘firewall guy/girl’, they need to ascertain two things; 1. Is the problem actually the firewall, if not then help the frustrated party track down the actual problem. 2. If your problem IS the...
Hacking Wireless WEP Keys with BackTrack and Aircrack-ng
KB ID 0000633 Problem Disclaimer: This article is for educational purposes only. Having the ability to pick a lock does not make you a thief. The main thing to take away from this article is, “DONT secure your wireless network with WEP”. WEP, has been around for a long time now, its limited to an alpha numeric password, 0-9 and A-F (because its in hexadecimal), the password can be 40, 64 or 126 bits long. The flaw is, each...