Network Security

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Welcome to the Cisco Community Ask Me Anything conversation. Submit your questions from  Wednesday, March 4, 2026 through Wednesday, March18 2026. Our Experts Ike Chon, Scott Nishimura, Annya Martinez Foster, Jyhan Ocana Casillas, Eder Pacheco, Willi...

setting up my cisco-9300 switch with dot1x  security on ports using active directory and clearpass radius.i have no problem of getting port to either unauthorize or authorize as predicted.the issue i am having is when port is set to unauthorize the t...

nick wesley by Frequent Visitor
  • 1903 Views
  • 3 replies
  • 0 Helpful votes

Hi all, First time poster.I have a VPN into GCP and from my normal LAN I can traverse the VPN fine and from other MPLS connected sites which also connects via the LAN interface from a Nexus. However from the DMZ interface on the same ASA which the VP...

Dan1heMan by Visitor
  • 1040 Views
  • 6 replies
  • 0 Helpful votes

Hi,I need the help. I have cisco C8300 router running in Autonomous mode. I can't enable MACSEC on interface level. When I try to enter the MACSEC command on interface level it shows invalid input. AS shown belowRouter(config)#interface tenGigabitEth...

arslan nawaz by Community Member
  • 1687 Views
  • 4 replies
  • 0 Helpful votes

Hi, I tried to change the GUI Admin password of our FMC 1000 but it always give me this error: "An error has occurred when updating user account information in the firmware for Lights-Out Management access. See log files for more details about possib...

aishad by Visitor
  • 628 Views
  • 2 replies
  • 0 Helpful votes

Hello,I'm using ASA version 9.1, and ASDM version 7.1.When connecting from my VPN using AnyConnect VPN client, I can access computers in my LAN without any issue.I cannot access anything on the DMZ.My lan is 172.20.20.xMy DMZ is 172.21.20.xand my VPN...

Resolved! FMC Question

HISo we have an FMC 1000 which is currently managing x1 FTD I have been sent a replacment FD and cant add to the FMC as I keep getting the below error, I was considering de-registering FMC and then generating a new token on SSM and trying to re-regis...

Hi all: I am having an issue with a 1:1 NAT on an FTD.  I have two FTDs (both managed by an FMC), and they both have 1:1 NATs.  The NATs are working on one FTD, but not on the other.  They have different flavors of internet, and the problem is relate...

Zac576 by Frequent Visitor
  • 1411 Views
  • 1 replies
  • 0 Helpful votes