On Mon, May 21, 2001 at 10:29:35PM +0200, Daniel de los Reyes wrote: > This is the output I get from nmap about things I am not sure what to do > about: > > 9 open tcp discard discard is /dev/null for networks. Generally not needed expecially if you are worried about attcks. > 13 open tcp daytime Prints the current date in a string form (e.g."Mon May 21 16:28:43 2001") ... generally not needed. > 37 open tcp time Outputs the current time as seconds sine the epoch in machine readable form. Can be useful if network clients expect the service for crude time synchronisation (some windows clients can use this service). Otherwise not generally needed. > 113 open tcp auth The infamous "IDENT" protocol. Totally worthless IMO but most IRC servers require this port to be open and returning information. Apparently some FTP servers require this service as well. > 119 open tcp nntp nntp is Network News Transport Service. Apparently you are running a news server? (inn or cnews). Otherwise not needed. > Can someone explain me what these services are and if I can safely > turn them off? HTH, -- Nathan Norman - Staff Engineer | A good plan today is better Micromuse Ltd. | than a perfect plan tomorrow. mailto:nnorman@micromuse.com | -- Patton
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