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Very Slow Response of SSH (VMS 8.3)

Kumar_Sanjay
Regular Advisor

Very Slow Response of SSH (VMS 8.3)

I did the rolling upgrade from VMS 7.3-2 to VMS 8.3
And TCPIP 5.4 to 5.6 with latest ECO KIT.

It seems everything is working fine except ssh

If I do, telnet or FTP to the host itâ s working fine.
But if I do SSH to this server it will take 1 to 2 min to get Prompt for the password.
Can please any once advice me what configuration need to change to get it resolve.

-Also I am attaching the config file for reference.


6 REPLIES
Ian Miller.
Honored Contributor

Re: Very Slow Response of SSH (VMS 8.3)

is dns host lookup working on the host?
____________________
Purely Personal Opinion
Kumar_Sanjay
Regular Advisor

Re: Very Slow Response of SSH (VMS 8.3)

Is DND really required for this? I am not sure

I am using IP Address to connect to the Host.
Richard Whalen
Honored Contributor

Re: Very Slow Response of SSH (VMS 8.3)

DNS is not required, but the SSH server does reverse look ups so that has the information in case the configuration file restricts access from certain hosts or to find the host key for host key authentication.
Kumar_Sanjay
Regular Advisor

Re: Very Slow Response of SSH (VMS 8.3)

Ian Miller and Richard Whalen,

DNS was not correct, now it is ok... DNS Lookup is working fine
Also I stop start the service after this.

But still i am facing same issue.

Thanks
S.Kumar
Steven Schweda
Honored Contributor

Re: Very Slow Response of SSH (VMS 8.3)

> DNS Lookup is working fine

DNS look-up of _what_ is working fine? The
problem is likely to be the reverse look-up,
that is, number-to-name.

It would be nice to see actual nslookup
results, rather than just your assurance that
things are "working fine".

Also, "ssh -v [...]" may give you a better
idea of what is happening when.
Kumar_Sanjay
Regular Advisor

Re: Very Slow Response of SSH (VMS 8.3)

thanks for ur reply