Upgrading to IOS firewall

[mulhollandm]

folks

i have a HSRP router pair on my perimeter which i'm going to upgrade to a firewall pair so i can take advantage of active/standby and for better management

has anyone enable the firewall on a working router before?

will i lose any of my config?

thanks to anyone taking the time to reply

[5220]

Normally, the IOS upgrade will leave your config intact.

The hard part will be implementing the firewall rules.

I suggest you first deploy them on secondary HSRP router and test them with two computers, one on each side ( both pointing to the physical IP of the secondary router).

When the rules are ready, copy them to the primary.

Please rate if this helped.

Cheers,

Daniel