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7 Cards in this Set
- Front
- Back
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NAT & ICS - 4 differences
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1. NAT needs Win2K Server or Advanced Server, ICS can also run on Professional
2. Configuration - ICS = tick check box, NAT requires RRAS and is configured from the RRAS snap-in 3. Public IP addresses - ICS exposes single IP, NAT can expose several 4. No. of networks - ICS links one LAN to one public IP, NAT can link many LANS so long as each LAN has its own interface. |
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ICS not suitable for networks where there are:
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DHCP servers
static IP addresses DNS servers Domain Controllers |
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ICS - changes made by installation (on internet connected adapter)
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LAN adapter gets IP address 192.168.0.1/24
ICS service started and set to run on boot DHCP address allocator srevice enabled on the above range. Baby DHCP If internet connected adapter is dial up, automatic dial up is enabled. |
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2 ICS finesses
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1. Applications tab - outbound port mapping for specific apps
2. Services tab - inbound port mappings for eg ftp or http. |
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NAT - the 3 components
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Translation - NAT table
Addressing - DHCP address allocator Name Resolution - DNS proxy, forwards to DNS server configured on internet-connected adapter. |
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NAT - creating interfaces in order
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1. First create LAN interface
2. Create Internet adapter interface second, if dialup connection, you'll need to supply routing information |
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Header translation - should always be turned on for
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public interface
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