User Manual

VisionNet 202ER ADSL Ethernet Router User’s Guide
v
Configuring DHCP Server ...................................................47
Viewing, modifying, and deleting address
pools, and excluding IP addresses from a
pool............................................................................. 50
Viewing current DHCP address assignments ............50
Configuring DHCP Relay.....................................................52
Setting the DHCP Mode ...................................................... 53
8 Configuring Network Address Translation........ 55
Overview of NAT..................................................................55
Your Default NAT Setup......................................................56
Viewing NAT Global Settings and Statistics .....................57
Viewing NAT Rules and Rule Statistics..............................60
Viewing Current NAT Translations .....................................61
Adding NAT Rules ...............................................................63
The napt rule: Translating between private and
public IP addresses...................................................63
The rdr rule: Allowing external access to a
LAN computer............................................................ 65
The basic rule: Performing 1:1 translations ................68
The filter rule: Configuring a basic rule with
additional criteria........................................................69
The bimap rule: Performing two-way
translations.................................................................71
The pass rule: Allowing specific addresses to
pass through untranslated ........................................72
9 Configuring DNS Server Addresses................. 79
About DNS............................................................................79
Assigning DNS Addresses ..................................................79
Configuring DNS Relay .......................................................74
10 Configuring IP Routes....................................... 77
Overview of IP Routes.........................................................77
Comparing IP routing to telephone switching ............. 77
Hops and gateways ......................................................78
Using IP routes to define default gateways.................78