Fwsm

Using SPF Records To Build Objects

2009-10-16 ·4 min read

My biggest complain about modern firewalls is their lack of the ability to create rules based on URLs or HTTP streams; you have to open access between IP addresses. Yes, I know there are other means …

_netblock asa dig dns fwsm google http mail object object-group pix records security spf txt

Object Groups in the ASA/FWSM/PIX

2009-10-01 ·5 min read

I can’t believe I haven’t talked about object-groups yet. I had a whole other blog entry written up, and, when I went to link things over, I realized I couldn’t find an intro to it. …

acl asa fwsm group object object-group pix

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

Getting Started with the FWSM

2008-05-01 ·3 min read

Have I talked about the Cisco Firewall Services Module (FWSM) before? It’s a firewall on a module for the 6500 and is based on the PIX firewall. The term “based on” is important …

firewall fwsm