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Intermittent disconnected servers in Entreprise Console

Hello All,

Our environment contains one SEC 5.5.1 with server 2016, and is mainly use to protect Windows Server (2008R2, 2012R2,2016)

We are facing issues to have all servers connected to our console, numbers will go up and suddenly drop, and start to go up again

We have about 900 endpoints, where at max i will say we can see 300 connected all the rest is disconneted

On the SEC router log file we have many entries with

error code: 336462231 - error:140E0197:SSL routines:SSL_shutdown:shutdown while in init

I am assuming that all those actions are bring down the router service and that is why numbers dont go up and stay stable.

On the client side i can find various errors

19.05.2020 10:15:54 166C E ACE_SSL (5664|5740) error code: 336027804 - error:1407609C:SSL routines:SSL23_GET_CLIENT_HELLO:http request

some with 

19.05.2020 15:41:38 AED8 E ParentLogon::RegisterParent: Caught CORBA system exception, ID 'IDL:omg.org/CORBA/TRANSIENT:1.0'
OMG minor code (2), described as '*unknown description*', completed = NO

Clients will get connected and the suddenly disconnected for some hours, and then comeback online.

Help and guidance, to where to start looking will be appreciated
I am not sure all servers are afected in the same way

Thanks in advance
Carlos



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  • Hi  

    Wireshark would be more helpful here, please check this article and see if it helps you to give it a start. 

    Shweta

    Community Support Engineer | Sophos Technical Support
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  • Hi thanks for your answer

    I checked already this part with wireshark, but unfortunately did not get any client with the filter set in this article

    Regards,

  • Hello  

    Do the servers, by any chance, have Lightspeed Smart Agent installed?

  • On the management server, does it perform any other roles that could cause a lot of TCP connections?  Could it be running out of ephemeral ports and having to recycle them? 

    This seems unlikely on a 2016 server though and you would get a Windows event log entry for this, that said you could run:

    netsh int ipv4 show dynamicport tcp

    This will print the starting port in the dynamic (ephemeral) range and how many ports there can be.  What does that look like?

    If when connections are being closed, what does 

    netstat.exe -ano | find.exe "ESTABLISHED" /c

    return for the number of established TCP connections? Does this approach the limit of ephemeral ports as a guide?

    Thanks,

    Jak

  • No Lightspeed agent installed

    It is basically a dedicated server for Sophos

    SQL and Sophos applications

    Regards,

    Carlos

  • Hi Jak

    TCP dynamics looks like this

    Protocol tcp Dynamic Port Range
    ---------------------------------
    Start Port : 49152
    Number of Ports : 16384

     

    and the Netstat returned 438, when I ran the command there was only 84 connected servers to the console

    What I dont really get is why a server which is connected, would suddenly drop when nothing as change, even trying to restart the service "router" on the endpoint does not always re-connect the endpoint.

    Hope this info helps a bit

    Regards,

    Carlos

  • Can you export the router reg key: HKLM\SOFTWARE\Wow6432Node\Sophos\Messaging System\Router\ to a .reg/txt and paste it here?

    Thanks.

  • Key Name:          HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Sophos\Messaging System\Router
    Class Name:        <NO CLASS>
    Last Write Time:   18.05.2020 - 21:56
    Value 0
      Name:            LegacyProtocolSupport
      Type:            REG_DWORD
      Data:            0
    
    Value 1
      Name:            <NO NAME>
      Type:            REG_SZ
      Data:            
    
    Value 2
      Name:            NumORBThreads
      Type:            REG_DWORD
      Data:            0x10
    
    Value 3
      Name:            ParentAddress
      Type:            REG_SZ
      Data:            
    
    Value 4
      Name:            ParentPort
      Type:            REG_DWORD
      Data:            0x2000
    
    Value 5
      Name:            ConnectionCache
      Type:            REG_DWORD
      Data:            0x5020
    
    Value 6
      Name:            NumSenderThreads
      Type:            REG_DWORD
      Data:            0x8
    
    Value 7
      Name:            ConnectRetriesPause
      Type:            REG_DWORD
      Data:            0x64
    
    Value 8
      Name:            TotalConnectRetryTimeSecs
      Type:            REG_DWORD
      Data:            0xa
    
    Value 9
      Name:            GetterInterval
      Type:            REG_DWORD
      Data:            0x78
    
    Value 10
      Name:            GetterShortInterval
      Type:            REG_DWORD
      Data:            0x78
    
    Value 11
      Name:            NumNotificationThresholdThreads
      Type:            REG_DWORD
      Data:            0x4
    
    Value 12
      Name:            IORSenderPort
      Type:            REG_DWORD
      Data:            0x2000
    
    Value 13
      Name:            ServiceArgs
      Type:            REG_SZ
      Data:            -ORBListenEndpoints iiop://10.137.249.17:8193/ssl_port=8194
    
    Value 14
      Name:            NotifyRouterUpdate
      Type:            REG_SZ
      Data:            EM
    
    Value 15
      Name:            NotifyClientUpdate
      Type:            REG_SZ
      Data:            Router$esopvm1041.Agent
    
    Value 16
      Name:            HostIPToParent
      Type:            REG_DWORD
      Data:            0
    
    Value 17
      Name:            ServiceHomeDir
      Type:            REG_SZ
      Data:            E:\Sophos\Enterprise Console\Remote Management System\
    
    Value 18
      Name:            ServiceDescription
      Type:            REG_SZ
      Data:            Message router for Sophos applications
    
    
    Key Name:          HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Sophos\Messaging System\Router\Private
    Class Name:        <NO CLASS>
    Last Write Time:   18.05.2020 - 19:50
    Value 0
      Name:            pkp
      Type:            REG_BINARY
      Data:            
    00000000   00 08 c0 c6 49 bd 12 06 - 4d 7c c1 98 70 50 4c 84  ..ÀÆI½..M|Á.pPL.
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    000002e0   cb 13 a4 c9 ff 3a e8 d7 - a6 9d 55 11 51 df bc 5e  Ë.¤Éÿ:èצ.U.Qß¼^
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    000004c0   fa ed                                              úí
    
    Value 1
      Name:            pkc
      Type:            REG_BINARY
      Data:            
    00000000   30 82 03 29 30 82 02 11 - a0 03 02 01 02 02 03 04  0..)0... .......
    00000010   1e d2 30 0d 06 09 2a 86 - 48 86 f7 0d 01 01 0b 05  .Ò0..	*.H.÷.....
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    00000050   39 33 37 5a 30 1c 31 1a - 30 18 06 03 55 04 03 0c  937Z0.1.0...U...
    00000060   11 52 6f 75 74 65 72 24 - 65 73 6f 70 76 6d 31 30  .Router$esopvm10
    00000070   34 31 30 82 01 22 30 0d - 06 09 2a 86 48 86 f7 0d  410.."0..	*.H.÷.
    00000080   01 01 01 05 00 03 82 01 - 0f 00 30 82 01 0a 02 82  ..........0.....
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    000000a0   4d 9d e3 2a 21 21 10 1a - 8f fb e2 59 c8 4c 89 a4  M.ã*!!...ûâYÈL.¤
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    This is the SEC router registry keys, I have added the IP after the iiop:// as part of my tests 

  • Key Name:          HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Sophos\Messaging System\Router
    Class Name:        <NO CLASS>
    Last Write Time:   20.05.2020 - 06:00
    Value 0
      Name:            ServiceDescription
      Type:            REG_SZ
      Data:            Message router for Sophos applications
    
    Value 1
      Name:            ServiceHomeDir
      Type:            REG_SZ
      Data:            C:\Program Files (x86)\Sophos\Remote Management System\
    
    Value 2
      Name:            ParentAddress
      Type:            REG_SZ
      Data:            10.137.249.17,esopvm1041.cas.res,esopvm1041
    
    Value 3
      Name:            ParentPort
      Type:            REG_DWORD
      Data:            0x2000
    
    Value 4
      Name:            ConnectionCache
      Type:            REG_DWORD
      Data:            0xa
    
    Value 5
      Name:            NumSenderThreads
      Type:            REG_DWORD
      Data:            0x3
    
    Value 6
      Name:            NumORBThreads
      Type:            REG_DWORD
      Data:            0x4
    
    Value 7
      Name:            IORSenderPort
      Type:            REG_DWORD
      Data:            0x2000
    
    Value 8
      Name:            ServiceArgs
      Type:            REG_SZ
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    00000370   c3 8f 5b f7 58                                     Ã.[÷X
    
    
    

    Here is a client router registry key

    Regards

    Carlos

  • Hello Carlos,

    no surprise that the filter shows no endpoints as it looks for connection attempts using TLS v1.0. They'd have to run an outdated version of RMS (lower than 4.x, from mid-2017), or there's have to be some intermediary device that tries to downgrade the protocol, or RMS on the endpoints is configured (I think this is possible) to use TLS v1.0. All this is more than unlikely.

    From your initial post I see error 0x1407609C(336027804 decimal), the full message text is HTTP spoken on HTTPS port. If you can't detect a pattern (that could help to narrow down on the problem) I'd suggest you try to identify an endpoint that "reliably" fails to connect and trace the attempted handshake with Wireshark - both on server and endpoint (filtering on port 8194 and endpoint or server IP respectively. As the connection is taken down early and there is no other chatter on this port the trace comprises only a few packets.

    Christian