Security

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Network Access Control

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

33616 Posts

Network Security

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

71345 Posts

Duo Security

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

3665 Posts

OpenDNS

Ask questions not covered by support articles and documentation.

3653 Posts

Activity in Security

False Positive: Domain Blocked by OpenDNS

Hello, Domain: qusafe.aiI am the owner of qusafe.ai and am reporting a false-positive classification. Your feed currently lists this domain as phishing/malicious. This is incorrect.qusafe.ai is the legitimate website of QuSafe, a US-based post-quantu...

venu8 by • Community Member
  • 168 Views
  • 4 replies
  • 0 Helpful votes

Cisco Secure Client VPN on LINUX

How to assure CISCO Secure Client VPN will work perfectly over LINUX OS, Ubuntu or Mint distributions, because after installation sometimes there is no connection to corporate servers.

lfndo77 by • Community Member
  • 144 Views
  • 6 replies
  • 1 Helpful votes

Umbrella "Phishing" false positive – how to dispute?

Hi all,We manage a legitimate e-commerce website that Cisco Umbrella / OpenDNS has classified as phishing. OpenDNS resolvers return the hit-phish.opendns.com block address for the domain and all of its subdomains. Visitors on Umbrella or OpenDNS netw...

Lukas-v by • Community Member
  • 55 Views
  • 2 replies
  • 0 Helpful votes

Remote access Vpn Tshoot using FMC

Hi experts ,we have FMC managing our FTD's and version is 7.5 Recently few users had some issues connecting via the VPN while they are  working from home, and i was struggling to troubleshoot the issue from FMC as haven't used FMC much in recent year...

CSCws21678 - Zombie processes created by cscan on macOS Tahoe

Just an FYI as this one was hard to find.  All of our developers on MacOS Tahoe and the latest version of the Cisco Secure Client have the issue.### Root Cause Analysis of Spindumps 1. **Process Identification**:* The affected process is `cscan`, loc...

danshome by • Community Member
  • 2263 Views
  • 7 replies
  • 0 Helpful votes

OpenDNS sending sustained unsolicited UDP to reassigned cellular IPs

SummaryEntouch operates a fleet of cellular-connected building controls devices that reach the internet through KORE Wireless on a shared APN with dynamically assigned IP addresses. Since approximately January 2026, individual devices have intermitte...

Entouch by • Community Member
  • 41 Views
  • 0 replies
  • 0 Helpful votes

[ESA] Custom Log Fields per Syslog (CEF)

I am looking for a way to transmit Custom Log Fields via Syslog (CEF format).Currently it seems that you can only transfer the default log fields:But I would like to transfer additional log information, which I write e.g. via a content filter or mess...

Resolved! FTD 7.6.6 / Snort 3: ERR_CONNECTION_RESET

Hi community,since we switched our FTD from Snort 2 to Snort 3, some clients can no longer open websites. Chrome and Edge show ERR_CONNECTION_RESET. The traffic of these clients is not decrypted (they match a "Do Not Decrypt" rule), but the problem p...

FTD Data-Management on an HA pair

Dear all, I have read many cases similar to mine but I have not found the definitive answer.I have a pair of Cisco Secure Firewall 220s (release 10.0.1.0) that will form a HA pair in a branch site, these will be managed remotely by the FMC (release 1...

Max_Blacks by • Frequent Visitor
  • 99 Views
  • 2 replies
  • 0 Helpful votes

Cisco Firepower VPN Setting with Azure SAML

Dears,  I hope you're doing great. I need some assistance with an issue. I have a Cisco 2120 NGFW appliance running FTD. Remote Access VPN is currently active on port 443 and integrated with Azure via SSO; however, when I change the port (e.g., to 54...

Sefa On by • Level 1
  • 47 Views
  • 0 replies
  • 0 Helpful votes