Network Security

Hi all,     I need your help in the next: One customer report to me vulnerabilities in the his Cisco ASA and Cisco 2811 and the vulnerabilities is this.     1- OS Identification (Router). Synopsis: It is possible to guess the remote operating system....

Greetins All - hopefullly you can help me. I'm trying to port forward some ports to my internal mail server, namely smtp , www and http/https.  It looks like nat does work but its possible the firewall blocks it. -cus-fw-01(config)# show natAuto NAT ...

hi all, i configured port redirection on ASA to allow external user access to Internal FTPS Server.  but it's not working i use Filezilla client to access but i have this error.Statut :    Connexion à x.x.x.x:21...Statut :    Connexion établie, atten...

The Cisco IPS Signature Team is currently researching this threat and will update the forum in the next 24 hours with signature availability.Additional details of this threat can be found in the following alerts: http://tools.cisco.com/security/cente...

I have a ASA 5540 , with a single WAN IPwe have hosted a webpage on this IP through static NATnow i want to host another webpage on the same wan IP but a different port but i am not able to do itKindly Help....

Hi allI need to connect from an inside host to a host located in the DMZ zone for DNS queries. The host in the DMZ zone has a static NAT to the outside. The point now is that I would like to connect from inside to the NATed outside address, means to ...

After I finished my configuration for my FWSM, I cannot access to the outside. what do i wrong?FWSM/pri/act(config)# pingInterface: extTarget IP address: 194.25.2.129Repeat count: [5] Datagram size: [100] Timeout in seconds: [2] Extended commands [n]...

Hello,We have a Session border controller for VOIP calls in our network which sites behind ASA firewall on a DMZ. We also have a global pool for this DMZ. What i have observed is that the SBC IP address which is on the DMZ, gets natted to one of the ...

                   Never done it before but is there a second slot for internal flash or do you have to get external flash copy the files off and then upgrade the flash and copy back.