Network Security

In 2008 & 2009 I deployed around 2 dozen ASA5505's to small organizations.  I love the new ASA's so much that I even purchased one for my own home.With that said I still have a hard time undersatnding why Cisco decided 2.5 VLANs was the limit.  In my...

Hey Everyone,I am facing a DNS issue due to NAT, i think dns doctoring can solve this but the scenario is a little different so not sure of the exact solution.Attached is the network diagram. Exchange Server , DNS and Domain Controller are all locate...

Hi All,          i face a big problem that are continuing attack from the outside into my network. we identified that public ip but cant recognises it. so please hep me out how i can prevent this attacking.  i appreciate you comments

We are in the middle of a migration of some services but we need to apply some kind of "basic" security and I was thinking of using ACL's.But....Will there be any impact on established connections ( interactive and non-interactive ) when I make chang...

Hi,We have established LAN-LAN tunnel between ASA HQ and 827 Branch.The dhcp server behind ASA HQ firewall and the clients behind the Branch 827 router. How to configure both the devices to enable the clients to get dynamic IP addresss fron the dhcp ...

Hi,We have IPS module (NME-IPS-K9) on 3845 ISR router. All the time we see out of two CPUs on it, one CPU is always 100%. Can someone advise it this is normal behavior or is it due to some configuration/software error?.This situation is same before a...

When ever we try to add sensor to IME version we get this error;"Error response from IME server:-IOException: Read timed out. IME IME server is not responding. Please check if it is running."the SERVCIES ARE RUNNING!!!!!

Hello there, I am hoping somebody up\out there can save my sanity.  I am setting up a  new ASA 5505 with multiple interfaces, infact we  are using 5 of them.  The internal network is on the 192.168.168.x and  has web access to the  outside.  That i...

Hello,I am trying to set up a configuration using an ASA 5510 ( V 8.2(1) ) in routing mode to- act as an IGMP stub in one way- transparently forward multicast stream in the other wayI used 2 commands (the "multicast-routing" is enabled)- igmp forward...

Hello,Recently, I have bougth a bundle of ASA5540 with licence vpn premium and i checked two ASAs and i found this:In the version 7.0First ASA5540show versionCisco Adaptive Security Appliance Software Version 7.0(7)Device Manager Version 5.0(7)Compil...