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50 Chapter 3 IP Firewall Service
• DNS/Rendezvous
• ICMP Echo Reply (incoming pings)
• IGMP (Internet Gateway Multicast Protocol)
• PPTP VPN
• L2TP VPN
• QTSS media streaming
• iTunes Music Sharing
To open the firewall for standard services:
1 In Server Admin, choose Firewall from the Computers & Services list.
2 Click Settings.
3 Select the General tab.
4 Select the Any address group.
If you want to restrict or designate IP addresses for a standard service, you should
create an address group rather than use the Any address group. See “Creating an
Address Group” on page 50 for more information.
5 Select the services you want to allow.
6 Click Save.
Creating an Address Group
You can define groups of IP addresses for your firewall filters. These groups are used to
organize and target the filters. The default address group is for all addresses.
Addresses can be listed as individual addresses (192.168.2.2) or IP address and CIDR
format netmask (192.168.2.0/24).
To create an address group:
1 In Server Admin, choose Firewall from the Computers & Services list.
2 Click Settings.
3 Select the General tab.
4 Click Add beneath the Address Group pane.
5 Enter a group name.
6 Enter the addresses and subnet mask you want the filters to effect.
7 Click OK.
Important: If you add or change a filter after starting firewall service, the new filter
will affect connections already established with the server. For example, if you deny
all access to your FTP server after starting firewall service, computers already
connected to your FTP server will be disconnected.
LL2351.Book Page 50 Monday, September 8, 2003 2:47 PM