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Concurrent Connections lead to a crash on 9.312-5

DaMaN841
After manually updating to 9.312-5, I noticed that my concurrent connections steadily rose far above the usual norm for my Network, which is usually around 3-6k and continued until reaching 32000. 

To be more precise:

  • Monday 2500
  • Tuesday 5000
  • Wednesday 9500
  • Thursday 14300
  • Friday 18700
  • Saturday 23000
  • Sunday 28000
  • Monday 32000


This graph is linear by nature, so please don't graph my estimates [H]

Throughout the week, I checked TCP Connections via ip_conntrack, and that never went above 2500, so my only assumption was that UDP "Connections" were never flushed.

It may be coincidental, however, it seems that once I had reached 32000 Connections, the UTM stopped responding completely. I was no longer able to VPN into the UTM, browse via External (Internet), etc. I don't believe it crashed, since the UTM Slave did not take over. Since I needed to get back to work, I restarted the UTM Master, the UTM Slave took over, rebooted the UTM Master and all is right with the world again.

Thought I'd report this just in case it's a bug. If logs are needed, please let me know.

Cheers,
Kyle


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  • 0
    I have a client with this issue, so I'm submitting a Support Ticket.  I now believe that this is a bug although not one that pops up often.  Out of the 7 clients at 9.315 whose Monthly Executive Report I monitor, I see that there's one other experiencing the same thing, so 2 of 7.  I'm logged into another one now, and I see they have it. 3 of 8.  @#$%!

    UPDATE! This has been identified as Bug ID 35648. "Number of concurrent connections is rising constantly."  Development is currently working on it. 

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to BAlfson
    Hi Balfson,
    today i made fresh installation of 9.314 and restored backup from 9.314, everything was fine until 9.315 update.
    Strange is, that other UTM which runs as VM is not affected by this issue...

    V.
Reply
  • 0 in reply to BAlfson
    Hi Balfson,
    today i made fresh installation of 9.314 and restored backup from 9.314, everything was fine until 9.315 update.
    Strange is, that other UTM which runs as VM is not affected by this issue...

    V.
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