On Sat, Nov 09, 2002 at 07:35:15PM +0530, Shyam wrote: > How do I check whether a particular port , say , SMTP port , is open ? netstat -tulp, or portscan yourself with nmap. > Supposing a port , that I need to be open say , SMTP port is closed , how > do I open it ? A port is 'opened' by a program taking it and listening on it. Install an SMTP server or FTP server or... > And is there any similar way to close a port you have thus opened ? De-install the above program, or setup iptables to firewall the port. -rob
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