Kenneth Qvistgaard Dalbjerg, IT Konsulent i århus
Citrix Certified

Archive for the ‘Cisco’ Category

Cisco ASA get Site 2 Site VPN PSK – decrypt PSK S2S VPN

Monday, January 23rd, 2012 Posted in Cisco | No Comments »

If you only see asterisks, in the ASA configuration of you ASA when you want to find the PSK of a Site2Site (S2S)VPN, you can type this command: more system:/running-config then it will show the PSK in clear text.

Recovery IOS image with help of serial (console) and xmodem

Wednesday, November 17th, 2010 Posted in Cisco, Computer | No Comments »

This guide is only for recovery of a broken IOS image on you Cisco switch!. First download a new image from Cisco. Is require a Cisco login, ask you dealer for a login for Cisco or a IOS image for you ...

Network Policy Server problems

Friday, June 4th, 2010 Posted in Cisco, Windows | No Comments »

I have a network policy server that din't work. There was nothing standing in the Event viewer. I have install Wireshack and could se the packets was incoming and a reject was coming back to the Radius Client. I was search ...

Cisco ASA enable SSH

Thursday, May 20th, 2010 Posted in Cisco, Computer | No Comments »

Follow this quick guide 1) username xxxx password xxxx 2) passwd xxxxx 3) ssh x.x.x.x x.x.x.x {inside/outside} (Example: SSH 130.226.1.2 255.255.255.255 outside, to enable SSH from 130.226.1.2) 4) crypto key generate rsa modulus 2048 5) aaa authentication ssh console LOCAL

Decrypt Cisco VPN group password

Wednesday, August 27th, 2008 Posted in Cisco, Computer | 1 Comment »

I have a customer how has broken his Cisco VPN Client profiles. But the group password encrypted was still fine. So I found out that it was pretty easy to crack this encryption. The algorithm The algorithm which is used to encrypt a ...

Upgrade a Cisco Catalyst 2950 Switch

Wednesday, April 9th, 2008 Posted in Cisco, Computer | No Comments »

First you need to download a new firmware on Cisco homepage to that you need a cisco login. Then you need a tftp server. Klever's pumpkin is free. Then we need to take backup of the cisco switch before upgrading. Login to enable ...