HP UX not able to reach through SSH and telnet

[Momo18]

I have a ssh and telnet access problem to server HP UX B.11.31. Only console access iss OK

When i SSH after i enter login ( root), the password prompt don't come (I do not have the possibility to put the password). 

The Configurations at the SSHD_Config file level appears to be correct. 

No errors in the logs at /var/adm/syslog/syslog.log

Spoiler

Please Help me

[Steven Schweda]

> When i SSH after i enter login ( root), the password prompt don't come
> (I do not have the possibility to put the password).

   Does this problem affect other users, or only "root"?  How long did
you wait?  A frequent cause of remote log-in delays (30s or more) is a
bad DNS configuration.  Many server programs attempt to do a reverse
(address-to-name) look-up on a client when the client tries to connect.
If the DNS configuration is bad, then it may take a long time (30s?) for
that name look-up to fail.

   A Forum (or Web) search for keywords like "slow Telnet" or "slow SSH"
should find many examples.

   A quick test would be to run a command like the following on the
SSH/Telnet server:

      nslookup ip.address.of.client

   If that command fails (slowly), then you should probably look at the
DNS resolver configuration of the server.

[Momo18]

Hello,

Thank you for your reply.  

When I enter the login (root) and I type enter, I wait for 2 minutes before the server interrupts the connection.

I have only one user which is root. 

If it's a DNS problem, where can I fix it ?  At the SSHD_CONFIG file, I already put UseDNS no but it did not fix the problem. 

[Mani_Np]

This normally happens due to name resolution issue.

Hope you are able to login with root user through console.

Did you check files /etc/nsswitch.conf and /etc/resolv.conf?

If /etc/nsswitch.conf refers to DNS, then you need to verify if DNS servers listed in /etc/resolv.conf file are reachable.

In case you need further assistance, it is best to contact HPE Support and log HPUX software case for further assistance.

[Momo18]

Hello,

the problem is solved. There was a problem with the DNS server that was configured at /etc/resolv.conf.

 I changed the address by putting the one of the DNS server that works. 

Thank you very much