Windows – Export / Recover WEP and WPA Wireless Keys
KB ID 0001015 Problem If you need to connect to your wireless network with a new machine and have forgotten the key, you can view the WEP or WPA key in cleartext using the following procedure on a machine that has connected before. Solution 1. First launch PowerShell, ensure you ‘Run as administrator’. 2. To show all the wireless profiles stored on this machine, issue the following command; netsh wlan show profiles 3....
Cisco Simple GRE Tunnels (With IPSEC)
KB ID 0000951 Problem I’ve spent years setting up VPN tunnels between firewalls. The only time I’ve ever dealt with GRE is for letting VPN client software though firewalls. GRE’s job is to ‘encapsulate’ other protocols and transport those protocols inside a virtual point to point link. Below is the topology, I’m going to use. The tunnel will run form Router R1 to Router R3, once complete I should be...
Cisco ASA – Changing VPN IP Addresses
KB ID 0000391 Problem I had a client the other week with about 25 sites, his core site was changing ISP and therefore changing its IP address. On the main site this is pretty straightforward, just change the outside interfaces IP address, sub net mask and the default route (That’s the default gateway for non cisco-ites). All well and good, but what about his other 24 sites? They all had VPN’s back to the main site, and all...
Cisco ASA 5500 – Reset / Recycle VPN Tunnels
KB ID 0000586 Problem I’ve been asked this before and it came up on EE today, basically you have a site to site VPN tunnel and you either want to restart it or reset it. Solution Cisco ASA Reset ALL VPN Tunnels 1. Connect to your ASA, then to reset ALL your ISAKMP VPN tunnels use the following command; clear crypto isakmp sa In the example below I’ve reset ALL my tunnels. I had a constant ping running across the VPN, and...
Google Chrome – “This webpage has a redirect loop” Error
KB ID 0000423 Problem I’m running Chrome 11.0.696.25 beta (At time of writing) and I’ve seen this error a few times, usually with Facebook, and it’s been more of an annoyance than anything else. I’ve seen it on my Windows 7 machine, and on my Ubuntu 10.10 Netbook. Solution 1. Launch Chrome and click the Spanner Icon > Options > Under the hood > Content Settings. 2. Select “All cookies and site...