Network Security

Engage with peers and experts on network security topics such as Secure Firewall Threat Defense, Adaptive Security Appliance, Secure Firewall Management Center, and Security Cloud Control.
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  This session will provide an opportunity to learn and ask questions about how to troubleshoot issues with the Cisco Adaptive Security Appliance (ASAs), such as crashes, high CPUs, and other common issues. To participate in this event, ask your ques...

Monica Lluis by Cisco Employee
  • 28275 Views
  • 38 replies
  • 0 Helpful votes

I've got a Cisco 5515-X running the latest 6.2.3.2 FTD code.  I'd like to use 4 interfaces for Routed mode traffic to replace an aging ASA 5510 with the old code (DMZ, Inside, Outside, and Failover Interfaces).   I'd like to use the other remaining i...

I was troubleshooting an issue for someone here... Ultimately, I did find the problem, but in the process I uncovered something strange. Can anyone explain to me why the syslog says "Reset-I" but the RST is coming from the outside (as evidence by the...

Screen Shot 2018-09-04 at 10.12.43 AM.png Screen Shot 2018-09-04 at 10.12.53 AM.png
brettp by Level 4
  • 1127 Views
  • 2 replies
  • 0 Helpful votes

I am having issues with a port forward for an ASA 5506-x. All of the packet traces run fine, but with I attempt a connection the firewall logs show the following error.   3    Sep 03 2018    00:59:12        174.230.134.101    9631    <<outside IP>>  ...

carmonj by Visitor
  • 2700 Views
  • 7 replies
  • 0 Helpful votes

Hello Team,   I have a NSS322 and recently ransomware attacked in my network so i just reset my NSS322 and try to configure again but unfortunately i am not able to configure my NSS322 like previous setting.   Now my previous setting is my NSS IP is ...

some extract from cisco guide:"Verifying Pre-Fragmentation For IPSec VPNsTo verify that this feature is enabled, consult the interface statistics on the encrypting router and the decrypting router. If fragmentation occurs on the encrypting router, an...

slavon by Community Member
  • 12780 Views
  • 3 replies
  • 0 Helpful votes

Hello,   I have one multi-context asa running on the FPR4100. I would like to add one more logical device running asa in a single mode. So, I would have 2 ASAs running on the chassis. Does the FPR4K support it? Just for curiosity, can we have one FTD...

ITforever by Level 2
  • 1972 Views
  • 2 replies
  • 0 Helpful votes

Hi Everyone, Any idea what could be causing this?   #pkts encaps: 1181, #pkts encrypt: 1181, #pkts digest: 1181 #pkts decaps: 1181, #pkts decrypt: 0, #pkts verify: 0   we usually encounter encaps/encrypts are incrementing, but no decaps/encrypt -- us...

Jon Eyes by Level 2
  • 3040 Views
  • 4 replies
  • 0 Helpful votes