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Different services on same port

Is there a way to use 2 different services on the same port by assigning them on 2 different ip addresses eg. eth0 and eth0:0 ( telnetd and httpd ).
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kalad8
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kalad8
1 Solution
 
df020797Commented:
Yes, you can have different services on one port.You dont even have to use different IP addresses.

The technique is called "virtual hosting". It works like this: When a package comes to the port used by lets say 2 softwares it unpacks the IP and tcp layer and then check for what hostbyname (name mapped to the IP) it was sent to. It then forwards the package to the right software. Same techinique can be used differenting the services by IP adresses with eth0 and eth0:0 as an example. Then its checks hostbyaddr (IP number) and sends to the right software.

For all of the above to work the softwares you want to listen on the port have to support this virtual hosting technique.The operative system in itself cant do it for you, so it must be a part of the software.
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kalad8Author Commented:
Ok , i sort of figured it out when i read the HOWTO for apache and virtual hosting. Seems like i have to look for a telnet daemon up to the job then.
Thanks....
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