Telnet not working

[vickey_20]

I m trying to telnet another machine on my network but i get this error.

vickey@vickey-laptop:~$ telnet 192.168.0.10
Trying 192.168.0.10...
telnet: Unable to connect to remote host: No route to host

But normal pinging is working out perfectly

vickey@vickey-laptop:~$ ping 192.168.0.10
PING 192.168.0.10 (192.168.0.10) 56(84) bytes of data.
64 bytes from 192.168.0.10: icmp_seq=1 ttl=64 time=0.144 ms
64 bytes from 192.168.0.10: icmp_seq=2 ttl=64 time=0.116 ms
64 bytes from 192.168.0.10: icmp_seq=3 ttl=64 time=0.108 ms
64 bytes from 192.168.0.10: icmp_seq=4 ttl=64 time=0.126 ms
^C
--- 192.168.0.10 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3002ms
rtt min/avg/max/mdev = 0.108/0.123/0.144/0.017 ms

What is wrong and y m i not able to telnet the machin 192.168.0.10. Also telnet to 192.168.0.20 (the machine from where I m trying to telnet 192.168.0.10) is not working

vickey@vickey-laptop:~$ telnet 192.168.0.20
Trying 192.168.0.20...
telnet: Unable to connect to remote host: Connection refused

I m using ubuntu and have a freshly installed version and haven't messed up any files.

[Freston]

Do you have the telnet daemon running?


It's on your system probably part of the inetd daemon, so you have to edit /etc/inetd.conf in order to enable it. You can test whether it's running in a couple of ways, the easiest being:

# on the target machine:
telnet localhost

# or a portscan, look for an open port 23
nmap localhost
# or
nmap 192.168.0.10

That said, it's probably better to install ssh, and use that rather than telnet. It's much much more secure, specially over the intertubes.

[vickey_20]

The port doesn't seem to be open ,however on the target(192.168.0.10) machine its open.

vickey@vickey-laptop:~$ nmap localhost

Starting Nmap 4.62 ( http://nmap.org ) at 2009-06-06 17:08 IST
Interesting ports on localhost (127.0.0.1):
Not shown: 1714 closed ports
PORT    STATE SERVICE
631/tcp open  ipp

Nmap done: 1 IP address (1 host up) scanned in 0.113 seconds
vickey@vickey-laptop:~$

Even I have heard that using telnet isn't secure but I m doing it on my own personal home ntw.

[rcgreen]

Starting Nmap 4.62 ( Nmap - Free Security Scanner For Network Exploration & Security Audits. ) at 2009-06-06 17:08 IST
Interesting ports on localhost (127.0.0.1):
Not shown: 1714 closed ports
PORT STATE SERVICE
631/tcp open ipp

On this one, the daemon isn't running, on the other one
it may be a firewall issue.

[vickey_20]

thanks but how to make deamon run

[Freston]

Can you post the output of these two commands:

cat /etc/inetd.conf|grep telnet # on the remote machine
/sbin/route # on the local machine

[vickey_20]

vickey@vickey-laptop:~$ cat /etc/inetd.conf |grep telnet
vickey@vickey-laptop:~$ /sbin/route 
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.0.0     *               255.255.255.0   U     2      0        0 wlan0
link-local      *               255.255.0.0     U     1000   0        0 wlan0
default         192.168.0.1     0.0.0.0         UG    0      0        0 wlan0

The /sbin/route command is working properly ( I haven't connected to the target system but still form the o/p it seems that its working properly)
There is no o/p for greping telnet. I think the contents of the file may help :

# /etc/inetd.conf:  see inetd(8) for further informations.
#
# Internet superserver configuration database
#
#
# Lines starting with "#:LABEL:" or "#<off>#" should not
# be changed unless you know what you are doing!
#
# If you want to disable an entry so it isn't touched during
# package updates just comment it out with a single '#' character.
#
# Packages should modify this file by using update-inetd(8)
#
# <service_name> <sock_type> <proto> <flags> <user> <server_path> <args>
#
#:INTERNAL: Internal services
#discard                stream  tcp     nowait  root    internal
#discard                dgram   udp     wait    root    internal
#daytime                stream  tcp     nowait  root    internal
#time           stream  tcp     nowait  root    internal

#:STANDARD: These are standard services.

#:BSD: Shell, login, exec and talk are BSD protocols.

#:MAIL: Mail, news and uucp services.

#:INFO: Info services

#:BOOT: TFTP service is provided primarily for booting.  Most sites
#       run this only on machines acting as "boot servers."

#:RPC: RPC based services

#:HAM-RADIO: amateur-radio services

#:OTHER: Other services

[vickey_20]

so finally got some solutions. Now other machine is able to telnet my machine(.20) but when i try to telnet the machin (.10) i get this error

telnet: Unable to connect to remote host: No route to host