What Is The Difference Between Sua And Multi-Nat; What Is Bootp/Dhcp - ZyXEL Communications Prestige 2602RL-D3A Support Notes

NAT Type IP Mapping
One-to-One ILA1<--->IGA1
ILA1<--->IGA1
Many-to-One
ILA2<--->IGA1
(SUA/PAT)
...
ILA1<--->IGA1
ILA2<--->IGA2
Many-to-Many
ILA3<--->IGA1
Overload
ILA4<--->IGA2
...
ILA1<--->IGA1
ILA2<--->IGA2
Many-to-Many No
ILA3<--->IGA3
Overload
ILA4<--->IGA4
...
Server 1 IP<--->IGA1
Server
Server 2 IP<--->IGA1

What is the difference between SUA and Multi-NAT?

SUA (Single User Account) in previous ZyNOS versions is a NAT set with 2 rules, Many-to-One and Server.
The Prestige now has Full Feature NAT support to map global IP addresses to local IP addresses of clients or
servers. With multiple global IP addresses, multiple severs of the same type (e.g., FTP servers) are allowed on
the LAN for outside access. In previous ZyNOS versions that supported SUA 'visible' servers had to be of
different types. The Prestige supports NAT sets on a remote node basis. They are reusable, but only one set is
allowed for each remote node. The Prestige supports 2 sets since there is only one remote node. The default
SUA (Read Only) Set in menu 15.1 is a convenient, pre-configured, read only, Many-to-One mapping set,
sufficient for most purposes and helpful to people already familiar with SUA in previous ZyNOS versions.

What is BOOTP/DHCP?

BOOTP stands for Bootstrap Protocol. DHCP stands for Dynamic Host Configuration Protocol. Both are
mechanisms to dynamically assign an IP address for a TCP/IP client by the server. In this case, the Prestige
Internet Access Sharing Router is a BOOTP/DHCP server. Win95 and WinNT clients use DHCP to request an
internal IP address, while WFW and WinSock clients use BOOTP. TCP/IP clients may specify their own IP or
utilize BOOTP/DHCP to request an IP address.
All contents copyright (c) 2007 ZyXEL Communications Corporation.
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