you can do PAT , but you need to upgrade the RAM and flash memory before doing that. The IOS version with firewall function need more memory than default by 1603.

hi, if you want to block 172.16.1.0 -240.0, it is impossible to write it in one access-list. because it is not in one range. you can use 172.16.0.0 0.0.127.255 as one range, then delete172.16.0.0 and add the rest.

hi, just one additional point, if you use BGP4, you will need to apply for AS number first. alsomake sure your ISP support BGP and they also hvBGP running on their router.Make sure your IGP is running well so you can set up the IBGP session within yo...

I think you can use another router to NAT all traffic to the IP pool for the new ISP router and NAT the old public IP address to the new public IP address via NAT. if you let one router to do all the NAT and just let the PIX to purely filter the traf...