Network Security

HelloWe have a problem with some websites being blocked every now and then. Everyone inside can access this external website for weeks, and then suddenly it's not available for a few hours, and then it comes back. All without me making any changes to...

HiI got a basic question -  what is the recommended placement for a firewall on the network. If the firewall is Stateful Firewall and what if its an Application firewall.  which model of cisco asa supports application layer firewallLets assume the ne...

  Hi,Yes i know that PIX is EOL but i would like to ask query on the working of this firewall, which i am expecting to be the same in ASA as well. Configuration replication happens often in pix firewall will this happen from primary to secondary or A...

Hi:I am trying to figure out if the new code for ASA SM 9.0(x) or 9.1 is compatible with CAT6500 but I could not find any document that explicity confirms the the INCOMPATIBILITY. This table from the Release notes is not quite clear.http://www.cisco....

hi,I am running FWSM 4.1(10). I have seen recent attacks on some host for certain SIP ports in the range 5060 - 5062. In one incident there were a Million connections , it caused Memory Full issue on FWSM and it stopped passing traffic. I am wonderin...

Cisco 3750 with IP Service Image 12.2.55Trying to enable Web Authentication on Layer 3 interface:!ip auth-proxy name bp_auth_proxy http inactivity-time 60! interface GigabitEthernet1/0/5 no switchport ip address 192.168.1.27 255.255.255.0 ip access-g...

Hi allI got a weird problem with a PIX 515 (7.2(2).18.I'm natting SIP behind the Firewall [CME 4.1(0) (c2801-ipvoicek9-mz.124-11.XJ1.bin)]. Incoming and outgoing SIP-calls are working perfectly. See old conversation http://forum.cisco.com/eforum/serv...

I've just had a TAC opened and the technician did some global inspection rule and a ping test from internal server to the firewall/IPS and we saw the event.   A few weeks have passed and none of the reports have any data.I've ran a NeXpose vulnerabil...

bonjour ,je suis un débutant j'ai un pix 535 et je fait une maquette un réseaux connecté a l'interface inside @ 10.0.20.0/24l@ de l'interface inside c'est 10.0.20.1a l'interface outside ety connecté un router 2800 @ de outside c'est 192.168.100.160 /...

Hi,we have a FWSM in multicontext mode. we need to enable DHCP relay for clients in one context to the DHCP server in another context. the DHCP server or the DHCP clients are not in the shared VLAN. I went through the CCO documents, but couldnt find ...

Cisco ASA 5585-60 in context mode ver. 8.4.4(9) with SSP-60 IPS  using virtual sensors ver. 7.1(4)E4Synopsis:Host A (linux) runs curl command to download a file from Host B (linux) around 72MB in size.  Host A is on a different subnet than host B an...