first installation, network problem

["Eugene H. Sevinian" <sevinian@jerewan1.YerPhI.AM>]

I hope that someone can help me to fix such problems: 

After my first installation of Debian Linux I can run clients of ftp,
rlogin, telnet but it is imposible to do the same from outside to
communicate with my system. Only ping is OK in all directions. Though
there are some problems with DNS but I do not think that this can cause
such situation. 

Thanks forward,
	Eugene Sevinian


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