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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We have two ASA 5525-x firewalls managed using FMC and we're in the process of replacing them with two 1150 firewalls. Our vendor recommended to setup a completely new FMC for the new firewalls since the current FMC setup is quite behind on updates. ...

That guy by Level 1
  • 2373 Views
  • 5 replies
  • 0 Helpful votes

Hello,I am doing an upgrade for a customer for different FTD platforms managed by FMC version 7.7.10 While upgrading to the current (20/11/2025) recommended version from Cisco => 7.6.2 We are seeing the following fault, only in the 1120 1 Critical Ev...

aaronO by Level 1
  • 211 Views
  • 5 replies
  • 0 Helpful votes

Hi,I wonder how exactly the soucrce-interface play the role in processing tacacs authentication in Cisco Networking device.For example , I curently use 9300 and I put the tacacs source interface that is currently being shutdown by admin, Yet user can...

goosamsf by Community Member
  • 146 Views
  • 3 replies
  • 0 Helpful votes

Good morning: I have a port mirror on an interface.This traffic is causing intrusion events.How can I filter them?I've tried putting this traffic in a trust rule in the access control policy, but it doesn't work.I've also tried putting it in a prefil...

venbea by Level 1
  • 256 Views
  • 1 replies
  • 0 Helpful votes

We have two FTD 1140ns running 7.6.2.1 (HA) managed by a FMCv running 7.6.2. We have been getting high data plane errors (82 and 83%) respectively on both. I have tried disabling SNMP and making sure I only have one Secure Connect client image loaded...

Hi community,  I would like to ask for your opinion/experience with 7.7.10.x  releases Have you experienced any disruption, serious problem with these versions? in particular with S2S or RAVPN services.  Any comment or opinion will be welcome. Thank ...

Hello Community, Maybe somebody can shed some light about these obsolete Firepower units. We have removed them from production because according to cisco announcement the last security update will be delivered only until the end of Aug 2025.But I am ...