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Home » GFI User Forums » Kerio Control » Kerio Box NG500 - Memory Leak?
Kerio Box NG500 - Memory Leak? [message #148128] Sat, 16 May 2020 23:29 Go to next message
fishtech is currently offline  fishtech
Messages: 608
Registered: September 2010
Hi,

I have seen some other threads on this subject but not this specifically.

I jave an NG500 box with the latest software version at this time, ie. 9.3.4 build 3795.

Over the last 3 months or so i have received the memory alert email. after about 3-4 weeks of uptime, stating:

Low memory
Event description
Firewall: control.mycompany.com
Memory usage: 95%

This chart shows the most recent iteration of the problem...

/index.php?t=getfile&id=5121&private=0


The only way I have found to fix this is to restart the server, If I ignore (or miss) the alert, memory use increases to a point where the box locks up, network connectivity is lost and I have to go onsite and make a hard restart using the power button.

Is there anything I can delete or un-cache to relieve the memory?

Thanks,

ft.
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[Updated on: Sat, 16 May 2020 23:30]

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Re: Kerio Box NG500 - Memory Leak? [message #148168 is a reply to message #148128] Tue, 26 May 2020 10:03 Go to previous messageGo to next message
ian.bugeja is currently offline  ian.bugeja
Messages: 666
Registered: March 2017
Location: Malta
How many users are behind this firewall please?

Ian Bugeja
GFI Software
Re: Kerio Box NG500 - Memory Leak? [message #148216 is a reply to message #148168] Fri, 05 June 2020 15:13 Go to previous messageGo to next message
fishtech is currently offline  fishtech
Messages: 608
Registered: September 2010
at this time, with Covid, there are about 30 users behind the firewall. usually there may be 40.

in case it matters users do not need specific accounts at get through the firewall from the LAN.

there is a lot more VPN use right now with maybe 6 -7 concurrent connections for long periods.

thanks,

ft.
Re: Kerio Box NG500 - Memory Leak? [message #148218 is a reply to message #148216] Fri, 05 June 2020 17:41 Go to previous messageGo to next message
fishtech is currently offline  fishtech
Messages: 608
Registered: September 2010
Up to 95% usage today.
Hopefully the last 5% will not fill up before I can do a restart after-hours tonight.
ft.


/index.php?t=getfile&id=5129&private=0
Re: Kerio Box NG500 - Memory Leak? [message #148249 is a reply to message #148218] Tue, 09 June 2020 19:28 Go to previous messageGo to next message
billybob is currently offline  billybob
Messages: 35
Registered: October 2018
Try turning off IPS/application detection (under content filter > enable application awareness) and then restart it back. It should restart snort (intrusion protection) and give you some extra time between reboots. Not a solution, just a bandaid when you can't reboot immediately
Also, if you get a chance, can you ssh in the server and run top. It would be interesting to see what is causing the problem. I have had fbserver consuming large amounts of cpu/ram and had to reinstall and apply backup which fixed the problem.
Re: Kerio Box NG500 - Memory Leak? [message #148335 is a reply to message #148249] Mon, 22 June 2020 08:55 Go to previous messageGo to next message
ONE is currently offline  ONE
Messages: 2
Registered: May 2020
We also have this issue on multiple clients firewalls.
Issue has to do with SNORT. Only option so far is to reboot the firewall every now and then which will free up the memory.
Re: Kerio Box NG500 - Memory Leak? [message #148765 is a reply to message #148128] Wed, 30 September 2020 16:21 Go to previous messageGo to next message
fishtech is currently offline  fishtech
Messages: 608
Registered: September 2010
The problem continues...
Re: Kerio Box NG500 - Memory Leak? [message #148838 is a reply to message #148128] Tue, 13 October 2020 09:58 Go to previous message
ian.bugeja is currently offline  ian.bugeja
Messages: 666
Registered: March 2017
Location: Malta
Hi

There is no memory leak in Kerio Control. We have analyzed and run numerous tests. The likely issue here is that the box is being overloaded, and this can be based on the configuration and the traffic/bandwidth passing through it.

It is always suggested to respect the size guidelines mentioned here: https://support.keriocontrol.gfi.com/hc/en-us/articles/36001 5184040-Considering-the-Effect-of-Concurrent-Maximum-Users-f or-Maximum-Performance-on-Kerio-Control

What I suggest is the following:
1) Log in to SSH and run the free command. Check that there is SWAP enabled and you still have some free space. SWAP does help in these situations but it is also using a slower medium although the disks are SSDs.
2) Extend the life and performance of the box (if it's NG500) by adding more memory. NG500 has 4 memory slots and only 1 is in use (with a 4Gb module). You can add another 4Gb module and this would increase the available RAM.


Ian Bugeja
GFI Software
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