All incoming TCP connections blocked for 5 minutes at random times.

Showing results for 
Show  only  | Search instead for 
Did you mean: 

All incoming TCP connections blocked for 5 minutes at random times.

L2 Linker

At random times all TCP connections from the Internet are blocked (all ports and all IPs) for incoming traffic only.  Websites, mail servers etc are not accessible from the Internet.  UDP and ICMP are not affected.  What could be causing this?


@sharam wrote:

What I am seeing in logs related to the outage is:



But I am not able to see which rulebase this it related to.

You're showing the detailed log entry.  (You've clicked the magnifying glass next to an entry in the threat log)  To better help point out why this is happening we need to see the main entry.  It looks like this is happening because of a VP profile which is attached to a security policy rule.



L4 Transporter

zone protection

Thank you for your response @Brandon_Wertz .  This is the main entry of an event that just happened today:



Can you please be more specific?  Zone Pro is the first place we looked and changed various config to no effect.

Did you look under Objects -> Security Profiles -> Dos Protection?   Th default block duration is 5 minutes..

Like what you see?

Show your appreciation!

Click Like if a post is helpful to you or if you just want to show your support.

Click Accept as Solution to acknowledge that the answer to your question has been provided.

The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!

These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the LIVEcommunity as a whole!

The LIVEcommunity thanks you for your participation!