Security

Explore the security forums and share your expertise about firewalls, email and web security, Identity Service Engine, VPN, AnyConnect, Duo, Umbrella, Secure Access and more.
cancel
Showing results for 
Search instead for 
Did you mean: 
cancel

Browse the Community

Network Access Control

Cisco Identity Services Engine (ISE), Cisco Access Manager (CAM), Zero Trust Workplace

33652 Posts

Network Security

Engage with peers and experts on network security topics such as Secure Firewall Threat Defense, Ada...

71374 Posts

Duo Security

Get started with or get better at administering and using Duo by interacting with peers and experts!

3687 Posts

OpenDNS

Ask questions not covered by support articles and documentation.

3689 Posts

Activity in Security

whitelist quota of 25 domains

I'm still running into the "You have reached your whitelist quota of 25 domains. Upgrade to OpenDNS VIP today to increase your quota to 50 domains." message I thought all accounts are now 50 domains.Thank you for your help in advance!

hegabm by • Community Member
  • 20 Views
  • 0 replies
  • 0 Helpful votes

OpenDNS DoH returns RCODE 5 (REFUSED) for multiple domains

Hello,We are investigating unexpected DNS resolution behavior observed on November 10, 2026.We tested the OpenDNS DNS-over-HTTPS endpoint at doh.opendns.com/dns-query.We sent A and AAAA queries for the following domains:smmtouch.comsmmtouch.storedev....

Jrogor by • Community Member
  • 140 Views
  • 1 replies
  • 0 Helpful votes

FMCv 10.x EFi on VMWare

Hello,I have a question to experts here. I found that FMC is supporting EFI environment, but a new deploy is needed. I'd like to deploy FMCv 10.0 (I tried 10.1 also) on ESXi 8.0u3 on my lab, but the VM is deployed everytime in BIOS mode from the offi...

project-jer by • Community Member
  • 105 Views
  • 0 replies
  • 0 Helpful votes

Cisco ISE & Entra ID

Hello community,I need help in a case that requires integration between Cisco ISE and Entra ID for dot1xAt the moment ISE uses a certificate authentication profile which checks if the machine (PC) provides a trusted a certificate and also if it does ...

Resolved! Cisco 8300 Routers SOV Request

Cisco 8300 Routers Statement Of Volatility Request, does cisco provide these when requested. Is there an official way to get them?

Grider by • Community Member
  • 144 Views
  • 1 replies
  • 0 Helpful votes

FMC virtual Firewall Management

I'm unable to download the new Firepower Management Center virtual upgrade software. (No entitlement) I was able to download all prior to my license expiring. I went with a new vendor and now I'm only able to download the FTD software but not for the...

djohns777 by • Frequent Visitor
  • 168 Views
  • 2 replies
  • 0 Helpful votes

Adding new HA FTD cluster to an existing FMC

WE have an existing FMC which is managing cluster of FTD for our main site. Now I have 2 new FTD I want to add to FMC as HA cluster. What are the steps to do add the new FTDs to the FMC and then create a completely seperate policy for the new HA clus...

Top Experts - Last 30 Days