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telnet connection

 
JUAN_91
Occasional Advisor

telnet connection

PLATFORM:
--------
Server:
RP3440 HP-UX 11.11
lan0 to router
lan1 ro router
Host:
PC running a telnet&ftp server. Reachable from other sites.

PROBLEM:
-From the server I can ping the host, but I can not telnet it, or ftp it.
-I can send snmp ping to the host too. It seems that tcp has problems but not udp.
-Traceroute to the PC is OK.
-How can I realize over wich lan ping/telnet/snmp are going?
-How can I realize if my server is blocking this protocols?

TIA&BR,

Juan.
10 REPLIES 10
Marc Ahrendt
Super Advisor

Re: telnet connection

seems like you have tried access from the HP system. have you tried accessing the HP system from the PC using telnet and ftp? if so what results did you get?
hola
Steven E. Protter
Exalted Contributor

Re: telnet connection

Shalom Juan,

Try restarting the inetd daemon

inetd -k

inetd -c

There is good help on that one.

see /etc/inted.conf and make sure telnetd is configured to run.

SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
JUAN_91
Occasional Advisor

Re: telnet connection

Hi Marc, it is not possible to perform a ftp/telnet/ping from PC to HP.
Hi Steven, I'll test it and let you know asap. TIA&BR,

Juan.
Court Campbell
Honored Contributor

Re: telnet connection

If I understand this correctly you are using the HP-UX box as a client to telnet to your PC. You can ping the PC, but you cannot telnet or ftp to it. You apparently have the PC services up and running and can access those services from other clients on your LAN. Am I correct? If so I would think that maybe there is a firewall in between somewhere. Maybe you have a personal firewall that only allows people from your own subnet to access your machine. It's hard to say.
"The difference between me and you? I will read the man page." and "Respect the hat." and "You could just do a search on ITRC, you don't need to start a thread on a topic that's been answered 100 times already." Oh, and "What. no points???"
JUAN_91
Occasional Advisor

Re: telnet connection

Thanks Court!
If I understand this correctly you are using the HP-UX box as a client to telnet to your PC.
You can ping the PC, but you cannot telnet or ftp to it. You apparently have the PC services up and running and can access those services from other clients on your LAN. Am I correct? YES YOU ARE.
If so I would think that maybe there is a firewall in between somewhere. JUST 2/3 ROUTERS.
Maybe you have a personal firewall that only allows people from your own subnet to access your machine. It's hard to say.
AFAIK THERA ARE NO FIREWALLS...

TIA&BR!
Court Campbell
Honored Contributor

Re: telnet connection

For grins why not put a cross-over cable directly between the PC and the HPUX box. Make sure the PC and the HPUX box are on the same network. Then try and connect. If it works there is something definitely blocking in between.
"The difference between me and you? I will read the man page." and "Respect the hat." and "You could just do a search on ITRC, you don't need to start a thread on a topic that's been answered 100 times already." Oh, and "What. no points???"
JUAN_91
Occasional Advisor

Re: telnet connection

Thanks Court!
Boxes are several kms separated....
Court Campbell
Honored Contributor

Re: telnet connection

Another option is to install nmap on the HP-UX box and try and do a port scan of the PC.

http://hpux.cs.utah.edu/hppd/hpux/Networking/Admin/nmap-3.93/

I have a feeling in the end it is going to be something really simple.
"The difference between me and you? I will read the man page." and "Respect the hat." and "You could just do a search on ITRC, you don't need to start a thread on a topic that's been answered 100 times already." Oh, and "What. no points???"
JUAN_91
Occasional Advisor

Re: telnet connection

Hi, I'm afraid it is not possible to install such a SW in the server, it could be little risky due to other apps running and I prefer leaving the box untouched...sorry...
Any other tool maybe?
TIA&BR,
Juan.