
P-661HW-D Series Support Notes
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
sessions. The P-661HW-D 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.
16. How can I protect against IP spoofing attacks?
The P-661HW-D's filter sets provide a means to protect against IP spoofing
attacks. The basic scheme is as follows:
For the input data filter:
•
Deny packets from the outside that claim to be from the inside
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