Cisco Router – Configure Site to Site IPSEC VPN
KB ID 0000933 Problem I’ve done thousands of firewall VPN’s but not many that terminate on Cisco Routers. It’s been a few years since I did one, and then I think I was a wuss and used the SDM. So when I was asked to do one last week thankfully I had the configs ready to go. I’m going to use the IP addresses above, and my tunnel will use the following settings; Encryption: AES. Hashing: SHA. Diffie Hellman:...
Cisco IOS – Setup Remote Telnet/SSH Management
KB ID 000093 Problem Having the ability to remotely administer network devices, means I don’t have to get my lazy carcass out of my chair and start fishing console cables out of my bag, also it saves on shoe leather, and travelling time. Solution Cisco Router / Switch – Setup Telnet Access These days people frown at Telnet. It’s an insecure protocol so your password is sent in clear text over the wire, and can be...
Cisco Router – CBAC and Zone Based Firewall Setup
KB ID 0000937 Problem IOS 11.2 gave us CBAC, and IOS 12.4(6)T gave us the Zone Based Firewall. You can still use either, (providing you are running the correct IOS, or in the case of version 15 and upwards, added the correct license, ‘securityK9’). For older IOS versions usually you want the advipservices version of the IOS). Solution Run the following command to see if you have the correct license installed....
Cisco PIX 500 – IPSEC Site to Site VPNs (v6)
KB ID 0000611 Problem Note: This is for firewalls running an operating system BEFORE version 7, if you have an PIX running version 7 or above go here instead. I’ll run though he commands first and then the configuration from PDM at the end. Solution PIX 500: Configure a site to site VPN from command line 1. Connect to the PIX, go to “enable mode”, then to “Configure terminal mode” User Access...
Troubleshooting Phase 2 Cisco Site to Site (L2L) VPN Tunnels
KB ID 0000625 Problem It’s been over two years since I wrote Troubleshooting Phase 1 Cisco Site to Site (L2L) VPN Tunnels. I’ve always meant to come back and write the ‘Phase 2’ article but never got around to it. This article is NOT intended to be a ‘fix all” for phase 2 problems, it’s designed to point you in the right direction to locate the source of the problem. Solution Here’s my...