Telnet: Use & Procedures

[Former Member]

Hi,

I have gone through few links on Telnet but am not sure about the use of Telnet. Also it seems like there are more than one method of doing Telnet. Could anyone please advise me of methods to do Telnet & if there is any difference in use of each method. Also basically what is this Telnet all about & in which cases we need to do Telnet?

[Muniyappan · Accepted solution]

Hi Singh,

 Also basically what is this Telnet all about & in which cases we need to do Telnet?

i will explain one example.say you are trying to send a file from pi to FTP. before you configure receiver channel first we need to check the connections from pi to ftp. this is where telnet comes into play. log into command prompt of pi server do the telnet. same is well explained in the below blog.

http://scn.sap.com/community/pi-and-soa-middleware/blog/2012/01/18/michals-pi-tips-3-ways-to-check-a...

in alert configuration we use mail server host and port. here also we do telnet to check the connection between pi and mail server.

Regards,

Muniyappan.

[Former Member · Accepted solution]

Hi,

So does that mean that Telnet is used to check connectivity of PI with say FTP server or mail server. Can it be used for any other purposes as well say checking connectivity to a particular ECC box etc.if I have say File->PI->Proxy can I use it to see if PI could connect to ECC box which contains the proxy.( Sorry if I sound silly).

Regards,

R.Singh

[Muniyappan · Accepted solution]

Hi,

yes.

you can see the reply in the below threads for the same.

http://scn.sap.com/thread/2046608

http://scn.sap.com/thread/1942090

Sorry for late reply.

Regards,

Muniyappan.

[baskar_gopalakrishnan2]

>Also basically what is this Telnet all about & in which cases we need to do Telnet?

In simple words , there are some standard services/protocols that are readily available on TCP/IP application layer of the system.   Example ftp (file transfer protocol) port 21 file transfer,  telnet (tel means distance) you make connection to the remote network via this protocol. You basically connect to the remote network system using hostname, user/pwd via port 23. Please check above links for the usage of telnet commands. similary mail service SMTP port 25.

[naveen_chichili]

Hi Singh,

Telnet is nothing but checking the highlevel connectivity from your source system to your target system.

Coming to procedure...

You can got to run-->telnet(provide the ip or host name of your target server)

If it pings successfully then the connectivity is fine...

Else you need to check the connectivity settings for example:firewall settings..etc

Thanks,

Naveen

[iaki_vila]

HI,

A few cents,

If you want to use telnet in linux, check this:

http://linux.about.com/od/commands/l/blcmdl1_telnet.htm

If you want to use telnet in windows, check this:

http://technet.microsoft.com/en-us/library/bb491013.aspx

Regards

[Former Member]

Hi,

Could you please let me know how to determine whether the FTP is working on windows or linux. The above commands for windows or linux will depend on which type of system I want to connect to or will it depend on my PI system? Please elaborate on the above as I am just a beginner.

Regards,

R.Singh.

[iaki_vila]

Hi,

The commands have to be used for the PI OS, because the telnet program is useful in the the system that you want to check its connectiviy. Telenet is a standard protocol this means that you dont have to be worried if the target system is linux, windows or whatever.

Regards.