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тАО11-25-2008 11:49 AM
тАО11-25-2008 11:49 AM
I understand that if you bind a socket to port zero VMS TCPIP will allocate a free ephemeral port which we can now listen on.
My question is what range of ephemeral ports does VMS use 1023-65535 full range or less?
Can TCPIP services be configure to restrict the range of free ports bind will use?
If so how is this done, TCPIP command ?
Please give an example for a range or say 32000 -32999
My question is what range of ephemeral ports does VMS use 1023-65535 full range or less?
Can TCPIP services be configure to restrict the range of free ports bind will use?
If so how is this done, TCPIP command ?
Please give an example for a range or say 32000 -32999
Solved! Go to Solution.
3 REPLIES 3
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тАО11-25-2008 12:58 PM
тАО11-25-2008 12:58 PM
Solution
The core tool here is sysconfig, both to display and to modify the port range.
When last I looked, the default range is 49152 to 65535 port range. The ephemeral port range varies by platform and by implementation.
Details and commands are here:
http://64.223.189.234/node/530
Ephemeral ports and firewalls don't mix all that well.
When last I looked, the default range is 49152 to 65535 port range. The ephemeral port range varies by platform and by implementation.
Details and commands are here:
http://64.223.189.234/node/530
Ephemeral ports and firewalls don't mix all that well.
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тАО11-26-2008 12:18 AM
тАО11-26-2008 12:18 AM
Re: VMS TCPIP
Thank you very much; the answer you gave hit the nail right on the head, and as you guessed the problems is with FTP and firewalls with a FTP failure rate between 5-10%.
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тАО11-26-2008 12:20 AM
тАО11-26-2008 12:20 AM
Re: VMS TCPIP
I how have all the information need to solve the problem.
Thanks again
Thanks again
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