Nat Configuration Example - 3Com MSR 50 Series Configuration Manual

NAT Configuration
Example
NAT Configuration
Example
To do...
Display connection-limit
statistics
Display NAT log information
Display the configurations
and statistics of NAT logs
Clear the records in the NAT
log buffer
Clear the statistics of NAT
logs
Clear the NAT mapping table
and release the storage space
n
Clearing the NAT log buffer implies loss of all NAT logs. In general, you are not
recommended to use this command.
Network requirements
As illustrated in
the NAT-enabled device. The company provides two WWW servers, one FTP server,
and one SMTP server for external users to access. The internal network address is
10.110.0.0/16. The internal address for the FTP server is 10.110.10.1, for the
WWW server 1 is 10.110.10.2, for the WWW server 2 is 10.110.10.3, and for the
SMTP server 10.110.10.4. The company wants to provide a unified IP address to
external users. Specifically, the company has the following requirements:
The internal users in subnet 10.110.10.0/24 can access the Internet, while
■
users in other network segments cannot.
External PCs can access an internal server.
■
The company has 6 legal IP addresses ranging from 202.38.160.100/24 to
■
202.38.160.105/24. Address 202.38.160.100/24 is used as the one for
external access and port 8080 is used for WWW server 2.
Use the command...
display connection-limit statistics
[ source src-address { mask |
mask-length } ] [ destination dst-address
{ mask | mask-length } ]
[ destination-port { eq | gt | lt | neq |
range } port-number ] [ vpn-instance
vpn-instance-name ]
display nat log
display userlog export
reset userlog nat logbuffer
reset userlog export
reset nat session
Figure 529, a company accesses the Internet through Serial 1/0 of

NAT Configuration Example

Remarks
Available in any
view
Available in any
view
Available in any
view
Available in user
view
Available in user
view
Available in user
view
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