Cisco ASA 5500 – Adding Licenses
KB ID 0000531 Problem Each model in the Cisco ASA 5500 range comes with a range of licences and features, to add these features you can purchase them from a Cisco reseller. You will then need to apply the licence to the device. Solution 1. Your first step is to purchase the Licence you require from an authorised cisco reseller. 2. When your licence arrives you need to locate the PAK that is on the certificate. 3. You need the Serial...
Cisco ASA Redundant or Backup ISP Links with VPNs
KB ID 0000544 Problem This method provides failover to a redundant ISP link should your primary network connection go down. IT IS NOT going to load balance the traffic across both interfaces. In this example I’ve also got a VPN to a remote site and some port forwarding to contend with as well. Where we are at the start. Where we want to be Solution Before you go any further the ASA that will have the backup ISP line,...
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...
ASA – Memory Error (Post upgrade to version 8.3)
KB ID 0000553 Problem I’ve split this article away from this one, as it tripped me up this week again, so I think it deserves an article of its own. Some ASA firewalls that shipped prior to February 2010 may need a hardware memory upgrade, before you can update them to version 8.3 and beyond. If not you will see the following; Memory Error as seen on an ASA5510 ************************************************************* ** **...
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...