firewall windows server 2003

I have a LAN containing ADSL SpeedTouch router, server with Windows Server
2003 and four machines running Win XP.
ADSL router is DHCP and it is connected to Internet with PPPoE.
I only need to have access on SQL server 2003 which is
installed on Windows Server 2003.
I have Norton installed on XP machines but;

What I need on Server 2003?
Is there some professional
AntiVirus for it, or/and
Firewall?

I had enabled windows firewall on server's LAN connection and had added
port 1433(sql server's port) on exception list, but
is this enough? ADSL modem has no firewall. I have heard thet harware
firewall is not good protection.

ps. I have no service pack 1 installed.

pps. sorry for bad english

1. If you don't have hardware firewall, it is better to enable 2003 firewall or NAT if it is possible.
2. You also should have anti-virus software.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"rudolf" <(E-Mail Removed)> wrote in message news:FF556842-2867-4E56-99BD-(E-Mail Removed)...
I have a LAN containing ADSL SpeedTouch router, server with Windows Server
2003 and four machines running Win XP.
ADSL router is DHCP and it is connected to Internet with PPPoE.
I only need to have access on SQL server 2003 which is
installed on Windows Server 2003.
I have Norton installed on XP machines but;

What I need on Server 2003?
Is there some professional
AntiVirus for it, or/and
Firewall?

I had enabled windows firewall on server's LAN connection and had added
port 1433(sql server's port) on exception list, but
is this enough? ADSL modem has no firewall. I have heard thet harware
firewall is not good protection.

ps. I have no service pack 1 installed.

pps. sorry for bad english