Network Security

Good Afternoon,I am wondeirng if anyone can help.  I have a ASA5540 firewall set-up with an interface MTU of 1500.   I suspect that we are recieving packets with a larger MTU but have not found an easy way of confirming this.   Does anyone know if th...

Hi all,Yesterday one of the interfaces on my firewall started flapping causing havoc to live services. It has now resolved itself and hasn't done it again but my questions is; is this start of something and what can I do to pre-empt it happening agai...

Hey all:I am having some issues getting internet traffic to pass to inside hosts on Two Cisco ASA 5520s running 8.4 ASA IOS.The set up is a 2-tiered FW. Inside Hosts -- ASA5520 -- DMZ Hosts -- ASA5520 -- Internet ProviderInside FW Network: 10.10.10.0...

Hello we have two ASA (ASA2)  with 8.3 version and ASA 7.2 (ASA1) , we have SNMP service active on ASA2 with 8.3 ASA version.Usually we do SNMP request from devices behind NAT on the ASA1 to the  ASA2 SNMP service , two weeks ago suddenly we could no...

Hi,May i ask how many user accounts i can create to a Cisco ASA box? Say for example a Cisco ASA 5510 or Cisco ASA 5520?Thanks.Regards,Jessica

The signature on the alert is 1205. The attacker is 0.0.0.0 and the target is 0.0.0.0. Does anyone know what is causing this? Or how I can tune this alert out? Any help would be greatly appreciated.                  

Hi,I have a problem with random host's geting the wrong source address on a ASA 5512-X 8.6(1).Right now there is a host, 192.168.25.108, showing up with 6.6.6.6 (fake) on whatsmyip.org, should be 5.5.5.5 like the rest of 192.168.25.0/24.In the xlate ...

Hi GuysI am trying to lock down the VPN access on my Cisco 5520 ASA's whereby I wish not to allow users to SSH access etc on servers running on the same interface that they are VPNing into.I did not originally configure the ASA and so I am slightly c...

Hello,I am working on adding a mapping to our external address for our mail server - let's call it mail.example.comI would like to be able to access mail.example.com internally for our user's smartphones - if they access our company WiFi they are not...

Hi,I am faced with a challenge with a setup which was previously running in a flat network without a firewall. They had a proxy server running which did NATTING for them on the WAN interface whereas the LAN segment was plugged into the LAN interface....

Friends,Any one has succeeded in simulating ASA 8.2(not ASA 8.02) in GNS3 ?I see some are very close in getting it running on GNS3...http://www.gns3.net/phpBB/topic2704.htmlPlease share your thoughts and info on this.It would be very helpful.

Dear Experts,In   my organization , we have Cisco ASA 5540 that is configured with the   remote access VPN profile. The Remote VPN is configured in such a way   that the user authentication will be through Microsoft LDAP ( AD   server).Currently   th...

Hi,I am facing an issue with OSPF running over cisco ASA.I have 2 sites, on both site I have a cisco ASA and a router.The 2 ASA are connected via a tunnel.The 2 routers via a leased line.On all devices I am running OSPFNormally traffic is going via l...