Alteon Application Switch Operating System Application Guide
Filtering and Traffic Manipulation
370 Document ID: RDWR-ALOS-V2900_AG1302
Redirecting Traffic with a Semi-Transparent Server
When redirecting traffic with a semi-transparent server, the client traffic is redirected to a VAS
server group, which changes the server source port. By using reverse session, an opposite entry is
added to the session table so that the return traffic matches its source MAC address and is
redirected to the VAS server group. The return traffic is then redirected back to the proxy server and
its source port are translated back to the original before returning to the client.
Figure 56: Redirecting Traffic with a Semi-Transparent Server
To redirect traffic with a semi-transparent server
1. Configure Filter 10 to redirect traffic to Real Server Group 10 (VAS server).
>> # /cfg/slb/filt 10
(Select the menu for Filter 10)
>> Filter 10# sip 1.1.0.0
(From a specific source IP address)
>> Filter 10# smask 255.255.0.0
(From a specific source IP mask)
>> Filter 10# dip any
(To any network destination address)
>> Filter 10# dmask 0.0.0.0
(For any subnet range)
>> Filter 10# proto tcp
(For TCP protocol traffic)
>> Filter 10# rport 0
(To any real server port)
>> Filter 10# dport http
(To any destination port)
>> Filter 10# ipver v4
(Set filter IP version to IP Version 4)
>> Filter 10# action redirect
(Redirect matching traffic)
>> Filter 10# group 10
(Redirect to Real Server Group 10)
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