ZyXEL Communications P-660HW-TX User Manual

P-660HW-Tx v2 Series Support Notes

• Many One-to-One: In Many One-to-One mode, the P-660HW-Tx v2

maps each ILA to unique IGA.

• Server: In Server mode, the P-660HW-Tx v2 maps multiple inside

servers to one global IP address. This allows us to specify multiple
servers of different types behind the NAT for outside access. Note, if
you want to map each server to one unique IGA please use the
One-to-One mode.

The following table summarizes the five types.

NAT Type

IP Mapping

One-to-One ILA1<--->IGA1

Many-to-One
(SUA/PAT)

ILA1<--->IGA1
ILA2<--->IGA1
...

Many-to-Many
Overload

ILA1<--->IGA1
ILA2<--->IGA2
ILA3<--->IGA1
ILA4<--->IGA2
...

Many

One-to-One

ILA1<--->IGA1
ILA2<--->IGA2
ILA3<--->IGA3
ILA4<--->IGA4
...

Server

Server 1 IP<--->IGA1
Server 2 IP<--->IGA1

14. How many network users can the SUA/NAT support?

The Prestige does not limit the number of the users but the number of the NAT
sessions. The P-660HW-Tx v2 supports 1024 sessions that you can use the
'ip nat session' command in CLI to see.

You can also use ‘ip nat hashTable

wanif0’ to view the current active NAT sessions.

15. What are Device filters and Protocol filters?

In ZyNOS, the filters have been separated into two groups. One group is
called 'device filter group', and the other is called 'protocol filter
group'. Generic filters belong to the 'device filter group', TCP/IP and IPX filters
belong to the 'protocol filter group'. You can configure the filter rule in CLI.

Note: In ZyNOS, you can not mix different filter groups in the same filter set.