I want to upgrade my PIX 525 FO UR bundeled version 6.1 (2) to 6.3(3).1. What precautions I need to take 2. How do I backup my 3des activation keys3. Do I need to upgrade both the firewalls together or I can upgrade one and the second later. (pr...

How can i open port 450 on the pix 525 firewall running 6.1 (3) codetserver 450/tcp Computer Supported Telecomunication Applicationsregardsanair