This is getting somewhat confusing; the symptoms are not clustering around a specific problem.
Call HP support and ask them for troubleshooting assistance, or contact and work with some other entity that knows VMS and TCP/IP Services and related troubleshooting, and work through this directly on the server(s) and network involved.
For general connectivity, ask your networking organization to have a look at the VLANs and IP routing here, if you're using managed switches. That you're not getting connections via localhost implies more than the network is involved here, though. Out on a managed network, it is quite possible for the networking team to block just telnet traffic, for instance.
One caution: do not trust what the corporate networking folks will tell you. Ever. They will sometimes tell you what are effectively bald-faced lies, and entirely with the best of intentions. Believe what they tell you only after you have verified the data yourself. To quote the old Russian Proverb: Trust, but Verify.
If you're looking within the real and live SYSUAF database (it's quite possible to have more than one SYSUAF file around), then not finding the username entries for the TCPIP Services product strongly implies that the system authorization configuration is likely invalid or that TCP/IP Services is not correctly configured; that your authentication database and/or TCP/IP Services database is/are effectively corrupt.
UAF> show {your username here} ! see if the last login time looks correct, etc; see if you're looking at "live" data
UAF> sho tcp*/br
Owner Username UIC Account Privs Pri Directory
TCPIP$BIND TCPIP$BIND [3655,7] TCPIP Normal 8 SYS$SPECIFIC:[TCPIP$BIND]
TCPIP$BOOTP TCPIP$BOOTP [3655,12] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$BOOTP]
TCPIP$DHCP TCPIP$DHCP [3655,1] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$DHCP]
TCPIP$FINGER TCPIP$FINGER [3655,3] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$FINGER]
TCPIP$FTP TCPIP$FTP [3655,4] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$FTP]
TCPIP$IMAP TCPIP$IMAP [3655,21] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$IMAP]
TCPIP$LPD TCPIP$LPD [3655,23] TCPIP Normal 8 SYS$SPECIFIC:[TCPIP$LPD]
TCPIP$NFS TCPIP$NFS [3655,22] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$NFS]
TCPIP$NFSLCK TCPIP$NFSLCK [3655,13] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$NFSLCK]
TCPIP$NOBODY TCPIP$NOBODY [3375,1] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$NOBODY]
TCPIP$NTP TCPIP$NTP [3655,14] TCPIP Normal 8 SYS$SPECIFIC:[TCPIP$NTP]
TCPIP$PCNFS TCPIP$PCNFS [3655,16] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$PCNFS]
TCPIP$POP TCPIP$POP [3655,15] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$POP]
TCPIP$PORTM TCPIP$PORTM [3655,5] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$PORTM]
TCPIP$REXEC TCPIP$REXEC [3655,11] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$REXEC]
TCPIP$RSH TCPIP$RSH [3655,10] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$RSH]
TCPIP$SMTP TCPIP$SMTP [3655,2] TCPIP Normal 8 SYS$SPECIFIC:[TCPIP$SMTP]
TCPIP$SNMP TCPIP$SNMP [3655,6] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$SNMP]
TCPIP$SSH TCPIP$SSH [3655,24] TCPIP Normal 8 TCPIP$SSH_DEVICE:[TCPIP$SSH]
TCPIP$TELNET TCPIP$TELNET [3655,20] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$TELNET]
TCPIP$TFTP TCPIP$TFTP [3655,17] TCPIP Normal 8 SYS$SYSDEVICE:[TCPIP$TFTP]
UAF>
Telnet itself is started from inetd.
And this:
>To check if this problem is caused by TCPIP V5.4, We uninstalled TCPIP and installed TCPWare instead. The telnet problem is still there: outgoing telnet is ok, incoming telnet is hanging.
Implies a more generic issue with the local network or local configuration, local DNS services or other issues.
