Network Security

with Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn expert tips on how to configure and troubleshoot Network Address Translation (NAT) and Failover on Cisco ASA Firewalls with Cisco Expert Amitashw...

Hi all,Apologies if I'm in the wrong area but this if my first post. I'm currently having issues where external DNS is going through to our secondary DNS server in our Production environment but not being returned to the client. Below is how our netw...

Hi,I would if some one can advise me what could be the command in ASA ver 8.2 for the following command in FWSM (ver3.2)1)  ftp mode passive - this command accept only on single context but I need to run on multicontext..2)  sysopt np completion-unit...

Hola.Hice una configuración en un ASA-5510 donde se tiene 3 interfaces una OUTSIDE, INSIDE y DMZ las configuraciones de direcciones de interfaz son las siguientes:Direcion ip ISP: 67.103.XXX.1/27OUTSIDE: 67.103.XXX.XXX/27INSIDE: 192.168.1.0/24DMZ:172...

Hi,I am trying to setup a new vlan pair on a IDSM-2 module but when i add some rules to intentionally block traffic to test the flow of traffic it isn't blocking traffic as expected.I have a server that lives in VLAN 20 and I've configured VLAN21 on ...

Hello I have configured an SSC-5 card in an asa 5505 and everything is working perfectly.  One of the things you need to do when configuring is configure allow-ssc-mgmt on the physical int on the asa to allow it manage the AIP card via that network c...

I have a layered  network where the majority of servers have access to two networks  (through their own separate NICs).  Everything is connected to an  SF300-48 switch with four (including VLAN1) VLANs set up.  Everything is  sitting behind an ASA552...

ASA5520 v8.3(2) OSI'm seeing connection bursts every 2 minutes to my internal SSH serverConns during that time peak at > 1500/sec - normal is 100/secInbound bandwidth usage goes from 4Mbit/sec to > 30Mbit/secCPU usage spikes above 60%When I do a "sho...

I'm looking for a good admin guide for the AIP-SSM for the ASA 5500 series that shows how to use the GUI. I have no experience with IDS at all so I need somethint to get me rolling here.

Hi,I'm running an ASA 5585 pair in transparent mode with two bridge-groups inside one context. The ASA is connected to a 6500 switch in VSS.In the logs, I'm seeing the MAC of the VSS cluster moving between between the two outside interfaces of my two...

Hi Guys, I've configures Clean access - inband mode - virtual gatewayCAS is doing VLAN mapping (from L2 to L3 vlans) without any issues, but when i add more vlans to be mapped, CAS doesnt do the mapping.lets said the vlan mapping as afollows:Untruste...

Hi experts,When I've tried adding NAC Server to NAC Manager in CAM web management, it prompts: Failed to add server: Could not connect to 10.130.80.81Is there anything I can do for solving this?I'm new for NAC Manager and Server installation.The vers...