Network Problems - Remote Ping successful / telnet local successful / telnet remote failed

Network Problems - Remote Ping successful / telnet local successful / telnet remote failed

Post by Peter Gehrin » Sat, 17 Feb 2001 07:14:31



im working with a small Linux System with network support on an local
network. A ping from a remote machine is successful. A local telnet
session is also successful. A telnet session from the remote machine
will fail.

I can see with ifconfig, if the ping from the remote machine is running,
the tx counter increases. If I try the remote telnet session, i can
watch incoming packets but no packet will transmitted.

With tcpdump i see the telnet connect request from the remote machine.
At next my machines sends an arp-request about the address of the remote
machine and the remote machine replies the correct information, but
nothing will happen.

My routing table has an entry for the network an for my own machine.

Has anybody an idea whats going wrong.

Thanks

Peter

 
 
 

Network Problems - Remote Ping successful / telnet local successful / telnet remote failed

Post by Duane Healin » Sat, 17 Feb 2001 07:25:45


Is telnet enabled in /etc/inetd.conf? Is the connection being refused
because of a rule in /etc/hosts.allow or /etc/hosts.deny?

--
-Duane
-DNAware SoftLabs



> im working with a small Linux System with network support on an local
> network. A ping from a remote machine is successful. A local telnet
> session is also successful. A telnet session from the remote machine
> will fail.

> I can see with ifconfig, if the ping from the remote machine is running,
> the tx counter increases. If I try the remote telnet session, i can
> watch incoming packets but no packet will transmitted.

> With tcpdump i see the telnet connect request from the remote machine.
> At next my machines sends an arp-request about the address of the remote
> machine and the remote machine replies the correct information, but
> nothing will happen.

> My routing table has an entry for the network an for my own machine.

> Has anybody an idea whats going wrong.

> Thanks

> Peter


 
 
 

1. Remote Ping successful/telnet local successful/telnet remote failed

im working with a small Linux System with network support on an local
network. A ping from a remote machine is successful. A local telnet
session is also successful. A telnet session from the remote machine
will fail.

I can see with ifconfig, if the ping from the remote machine is running,

the tx counter increases. If I try the remote telnet session, i can
watch incoming packets but no packet will transmitted.

With tcpdump i see the telnet connect request from the remote machine.
At next my machines sends an arp-request about the address of the remote

machine and the remote machine replies the correct information, but
nothing will happen.

My routing table has an entry for the network an for my own machine.
Im Starting telnetd by inetd.conf direct not checked by tcpd.

Has anybody an idea whats going wrong.

Thanks

Peter

2. feeding data to a program

3. ? Cannot PING after successful (remote) mgetty login

4. Configure X on Toshiba Notebook

5. RedHat 8.0 -- Telnet works to local host, but can't telnet from a remote machine

6. ppppllllzzzzz help me configure my modem

7. No Telnet/FTP From Remote Network - Local Works Fine

8. BeOS

9. ping successful, another FAILS, How possible????

10. Successful jumpstart BUT cant ping anything on network

11. Remote IP addr from telnet sesion (secure telnet)

12. NETWORK--Outbound TELNET ok but Inbound TELNET fails

13. telnet fail from remote