Network Security

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Cisco CyberSecurity


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Up until recently one of my sites was able to get to a postini subnet. Then we started recieving "host unreachable" e-mails. Postini told us SMTP traffic was not getting let in. I've compared the current config to a config that was saved before the i...

Hi guys,What is the best practices when deploying the IOS Firewall feature on routers, especially on the 800 series routers?I know that a router will never be a true firewall but those features are there to make them simulate...Usually what I do is t...

insccisco by Level 1
  • 4 replies
  • 0 Helpful votes

I want to allow ICMP traffic on ASA 5510 from LAN interface to DMZ. I've permit any traffic and added ICMP to the inspestion list also but still there is problem. Belos is the configuration. The image is asa822-k8.bin:ASA Version 8.2(2)!hostname fw-0...

Hello,Our organization uses a Cisco cloud based firewall/ScanSafe for internet access/content filter.We moved away from the previous method of an ISA Firewall using pac files.In the old system we had AD security groups to grant access to the ISA.  Wi...

Hi Guys,          I'm having an issue with standing up a new C6509-E containing Dual SUP-2T 10G supervisor engines and both ACE30 load balancers and ASA service module (WS-SVC-ASA-SM1)On initial boot the Sup wouldn't recognise either of these cards (...

lee.clack by Level 1
  • 2 replies
  • 0 Helpful votes

Hi,I am having peculiar issue in my setup. I recently replaced my ASA 5505 (8.2.1) with ASA 5510 (8.4.3). Everything works fine for a while suddenly I see some of the servers will not be reachable from the LAN all the servers gateway is my switch. If...

Hello, I've got asa 5510 Using asdm 6.4And im trying to configure ssh port forwardingbasically, I've got an old firewall server that im replacing right now with the asa 5510but as of now, I still need to access the old firewall via ssh from outside t...

Hi Guys,We have recently purchased a Cisco ISR 2921,  and on its docs it is writen that this product has a License for IOS IPS Signatrue File,  but on the product Flash Memory there is no  IOS IPS Sig-File.   and while i try to download the sig-file ...

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