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I am going to setup a server at my office for business use, I am going to use it as webserver , mail server and SQL server. the OS is &nbsp;windows server 2003 small business edition premium.<br />
my question is what is the best solution to secure my server from internet hackers and attacks ?<br />
currently I am using linksys WRTP54G router which has a built in firewall, but I dont know if it is enough or not ? do I need to buy a hardware firewall to protect my server or software firewalls would do well ? and if I need to buy a hardware or software firewall , what do u suggest ?<br />
Regards
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I am going to setup a server at my office for business use, I am going to use it as webserver , mail server and SQL server. the OS is  windows server 2003 small business edition premium.
my question is what is the best solution to secure my server from internet hackers and attacks ?
currently I am using linksys WRTP54G router which has a built in firewall, but I dont know if it is enough or not ? do I need to buy a hardware firewall to protect my server or software firewalls would do well ? and if I need to buy a hardware or software firewall , what do u suggest ?
Regards

Advice needed to secure my server

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.