Network Security

Hi Never come across anything like this before, but I had to do an emergency upgrade to a 5520 today and I took it up to 9.1(7). The device booted but would not respond on its inside interface. Sh int said the interface was up, but there was nothing ...

Hi, Can any one confirm whether the 'mac-address auto' command disturb the existing connections going through the production ASA? Will the ASA trigger the gratuitous ARP once we enter the command? Thanks.

Hello! Sometime in the past something happened between our two ASA5585 cluster and the configuration got out of sync. I have in master unit 170 ACL rules while 210 in the slave one. Each new rule i configure in the master replaces or merge with slave...

I have an ASA 5510 running 9.1(6) that changed its behaviour unexpectedly, and I'm trying to understand what's happened. This firewall sits between our DMZ (security level 50) and the internet/outside (security level 0). A few days ago, I enabled ICM...

Dear  Team, Do you  have any steps of config guide on snmp  configuration I want to add  Defense Center and  3DSystem for snmp availability and Interface/CPU/Memory Utilization Monitoring Regards Vineeth  

Hi All,We recently replaced out trusty old 3660 NAT router with a pair of ASA5520's. Our service desk used to be able to pull the NAT translations out of the router using SNMP. (CISCO-IETF-NAT-MIB:ciscoIetfNatMIB)We would like to do that same on the...

Hi all, I'm running into an issue where we are receiving multiple duplicates of emails (E-Mail volume increasing 10 fold) in our domain. Working with our filtering provider they are saying it is an issue with esmtp inspection / fixup smtp settings on...

I continually receive the below syslog message and need some guidance on troubleshooting to resolve the error.  I looked through the syslog meanings and Cisco states no action required.  This message occurs continually throughout the day. Any help is...

Greetings, I come from a Tippingpoint background and am now working with Firesight/Firepower. We have hosts that trigger an HTTP rule that is set to Drop. The traffic is valid and we do not want to drop it for this rule but we need all other http tra...