Hi, can we upgrade the ASA 5520 firewall to any of the 9.x IOS versions like 9.1.7, 9.9 or 9.10? do we need additional RAM if we upgrading from 8.x to 9.x? how higher the ASA 5520 go into the upgrade path?  thank you 

Hi,  We are using C2921-SECk9 router with 1GB RAM, its two or three interfaces go down every one or two months. The interfaces start working again after a reboot. What could be the cause?   System Bootstrap, Version 15.0 (1r) M15, RELEASE SOFTWARE (...

Hi everyone,   our firewall is currently on code 8.2. i want to know how to block a specific website using MPF and dropping dns query.    i am able to block it for whole inside network but not for a specific ip address or group of ips.    here is the...

Hi,   well finally i had to come here and post my problem as i have been working on it since long but couldn't understand why this happening. from past few days, i have been receiving the following logs on my core router. it looks like some kind of a...