Windows Server 2008 R2 – Configure RADIUS for Cisco ASA 5500 Authentication
KB ID 0000688 Problem Last week I was configuring some 2008 R2 RADIUS authentication, for authenticating remote VPN clients to a Cisco ASA Firewall. I will say that Kerberos Authentication is a LOT easier to configure, so you might want to check that first. Solution Step 1 Configure the ASA for AAA RADIUS Authentication 1. Connect to your ASDM, > Configuration > Remote Access VPN. > AAA Local Users > AAA Server Groups. 2....
Cisco Routers – Port Forwarding
KB ID 0000533 Problem If you have a server or host that you want to be publicly addressable and only have one public IP address then port forwarding is what you require. Solution Assumptions 1. You have a public IP on the outside of your Router. 2. You are performing NAT from your internal range of IP address to your External IP address. To Make Sure 1. Run the following command: PetesRouter#show run | include ip nat inside You...
Sync Microsoft Domain Time To A Cisco NTP Device
KB ID 0001038 Problem I’ve been posting domain time articles for a long time, and on more than one occasion I’ve really needed to take my Windows time from a Cisco Device and failed miserably. I’ve even used third party NTP software to solve this problem on my own test network. On a client network, my colleague deployed ACS5 this week, I secured the ASA5585-X for AAA and it failed authentication. Logging revealed a...
Allow access to VMware View through Cisco ASA 5500
KB ID 0000545 Problem To access VMware View though a firewall you need the following ports to be open; TCP Port 80 (http/www) TCP Port 443 (https/ssl) TCP Port 4172 (PCoIP) UDP Port 4172 (PCoIP) In the following example I’m using 192.168.1.100 as the internal IP address of the View Server and the public IP address of the firewall is 123.123.123.123. Which solution you use, depends on weather you are allowing access via a...
Cisco ASA – Using ‘logging’ to see what ports are being blocked
KB ID 0000702 Problem If you look after a firewall, sooner or later something will fail, and the blame (rightly or wrongly), will be leveled at the firewall. I came back from holiday this week to find a client had got a problem with secure POP email. The problem had been fixed (temporarily) by dropping the affected users into a group, and opening all ports. As this had fixed the problem then it’s fair to say that the ASA was...