difference between "localhost" and ""??

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http://www.linuxquestions.org – Hi to all! I have a web server with mysql which to I access via ssh from remote computer. There is also a router with firewall ON and open ports that I need between remote comp and this web server. Now, I am trying to access to mysql database via MySQL Workbench and I cannot connect to it. Therefore, I've logged into my server via ssh from my remote comp and checked open ports with nmap. Now after nmapping server's ip I see there is not opened 3306 port: Code: X@staufenberg:~$ nmap -v Starting Nmap 5.00 ( http://nmap.org ) at 2010-07-25 10:24 CEST (HowTos)