GNS3
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SecureCRT - IOU Server
http://forum.gns3.net/topic12214.html
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Author:  rcsmota [ Fri Sep 26, 2014 9:22 am ]
Post subject:  SecureCRT - IOU Server

When I access the IOU device for first time all goes well, however if I close secureCRT session and try to open again show the message "The remote system refused the connection". Only restart device to access again.

Looking in IOU server using netstat command after down the SecureCRT session the Listen port gone out and only listen again when restart device on GNS.

I using GNS Beta 3 but this problem has existed since beta 1.

Thanks.

Author:  tasdevil [ Sat Sep 27, 2014 4:54 am ]
Post subject:  Re: SecureCRT - IOU Server

check if your IOU is running still. I had that problem it was caused by IOU crashing (run it manually from bash shell see if it loads)

Author:  twv [ Tue Oct 07, 2014 2:27 pm ]
Post subject:  Re: SecureCRT - IOU Server

I tried SecureCRT and had the same problem as have several people. The issue is that SecureCRT sends an abort (RST) when you disconnect. I think this normally locks the port in a time-wait condition, but in the GNS3-IOU VM Server this seems to cause the GNS3-server to close the instance listening on that port (192.168.1.99 is the server in this cap):

Code:
12107   2151.566261000   192.168.1.69   192.168.1.99   TCP   54   19142?4001 [RST, ACK] Seq=25 Ack=42 Win=0 Len=0


Putty doesn't cause the same issue because it terminates the connection:

Code:
11583   1841.332889000   192.168.1.69   192.168.1.99   TCP   54   19137?4001 [FIN, ACK] Seq=29 Ack=19 Win=65536 Len=0
11584   1841.333361000   192.168.1.99   192.168.1.69   TCP   60   4001?19137 [FIN, ACK] Seq=19 Ack=30 Win=29312 Len=0

Author:  rcsmota [ Thu Oct 16, 2014 8:06 pm ]
Post subject:  Re: SecureCRT - IOU Server

Thanks twv.

Has a option on Secure CRT that resolve this problem? Or It's a default behavior of the software?

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