Sua Versus Nat - ZyXEL Communications P-660R-T1 Support Notes

Many to Many No Overload
In Many-to-Many No Overload mode, the P-660 m
Server
In Server mode, the P-660 maps multiple inside ser
allows us to specify multiple servers of different types b
access. Note, if you want to map each server to one unique IG
One-to-One mode.
The following table summarizes these types.
NAT Type
One-to-One
Many-to-One
(SUA/PAT)
Many-to-Many
Ov erload
Many-to-Many No
Overload
(Allocate by
Connections)
Server

SUA Versus NAT

S UA (Single User Account) in previous ZyNOS versions is a NAT set with 2 rules,
M any-to-One and Server. The P-660 now has Full Feature NAT support to map
g lobal IP addresses to local IP addresses of clients or servers. With multiple global IP
addresses, multiple severs of the same type (e.g., FTP serve
LAN for outside access. In previous ZyNOS versions (that supported SUA 'visible'
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IP Mapping
ILA1<--->IGA1
ILA1---->IGA1
ILA2---->IGA1
...
ILA1---->IGA1
ILA2---->IGA2
ILA3---->IGA1
ILA4---->IGA2
...
ILA1---->IGA1
ILA2---->IGA3
ILA3---->IGA2
ILA4----> IGA4
...
Server 1
IP<----IG A1
Server 2
IP<----IGA1
P-660 series Support Notes
aps each ILA to unique IGA.
vers to one global IP address. This
ehind the NAT for outside
A please use the
Mapping
Direction
Both
Outgoing
Outgoing
Outgoing
Incoming
rs) are allowed on the
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