Nat

ASA and Proxy ARP

2009-09-11 ·3 min read

Wow. A new entry. Everyone sit down before you pass out. I’ve got a real-world example for you today. We have an ASA 5540 installed at a business unit with interfaces in multiple networks, …

arp asa cisco fwsm nat pix proxy syn

Port Forwarding on the ASA/FWSM/PIX

2008-05-27 ·2 min read

Here’s a simple one since I haven’t updated in a while. I have my ASA 5505 at home and want to forward TCP/80 traffic to my public IP to my webserver at 10.10.10.10. There are two steps …

asa firewall fwsm nat pix

Star-crossed Lovers: HSRP/VRRP and NAT

2008-05-08 ·4 min read

I was doing an HSRP lab the other day, and a project from the past popped into my head. A customer had a host on a network that was separated from the rest of the network by a 1700 with a couple of …

nat

NAT on a PIX/ASA

2008-03-13 ·3 min read

NATting sucks and can be confusing. I’m sure everyone agrees to that, but you have to use it at some times. In a PIX/ASA, it’s easy to configure a simple setup, but can be …

acl asa firewall nat pix