Testing AnyConnect With Packet Tracer
KB ID 0001298 Problem Packet tracer is a great tool, I wrote about it in the ‘Prove It’s Not the Firewall’ article a while ago. A couple of months ago I was having a discussion with a colleague about packet tracing a remote VPN client to check connectivity, he said at the time, “It will behave differently if the IP you use is already connected”. I never really thought about it until today, when I was...
AnyConnect – “Connection attempt has failed due to server communication errors’
KB ID 0001279 Problem We had a firewall fail at work this week, as part of the rebuild the latest OS was put on it, version 9.7(1). I thought no more about it until I tried to VPN in and got this; I used my Windows 10 VM and that connected fine, only my MacBook could not connect, this VPN tunnel is a big deal I need it to get onto client’s networks. I tried my other VPN connections and every one was fine, only the recently...
Cisco AnyConnect – Allow Domain Password Change via LDAP
KB ID 0001273 Problem If you have remote users who connect via VPN, and a policy that forces them to change their password periodically, this can result in them getting locked out without the ability to change their password (externally). If your Cisco ASA is using LDAP to authenticate your users, then you can use your remote AnyConnect VPN solution to let them reset their passwords remotely. Solution Standard LDAP runs over TCP...
Cisco AnyConnect – With Google Authenticator 2 Factor Authentication
KB ID 0001256 Problem This was asked as a question on Experts Exchange this week, and it got my interest. A quick search turned up a bunch of posts that said, yes this is possible, and you deploy it with FreeRADIUS and it works great. The problem was, a lot of the information is a little out of date, and some of it is ‘wrong enough’ to make the non-technical types give up. But I persevered, and got it to work. Disclaimer:...
Cisco VPN – Split Tunnel Not Working?
KB ID 0001239 Problem Here I’m dealing with AnyConnect VPNs, but the principles are exactly the same for both remote IPSEC and L2TP VPNs. You connect to your VPN and can no longer browse the internet from your remote location. You can confirm that split-tunnelling is working or not by connecting with your VPN client and looking at the routing information. Solution Before proceeding are you sure Split-Tunnelling has ever been...
AnyConnect – The VPN Connection Failed (Domain Name Resolution)
KB ID 0001236 Problem This is a pretty generic error to be honest. AnyConnect Secure Mobility Client VPN The VPN connection failed due to unsuccessful domain name resolution. Solution Firstly, (and obviously) the name you are typing in the AnyConnect window can be resolved can’t it? If not then you might want to consider some employment that does not involve computers. Secondly (this is what usually trips me up) did you copy...