Forum Discussion
George_Watkins_
Apr 27, 2011Historic F5 Account
Hi LillyM,
If you are using version 10.x, there is a setting under the virtual server labeled "Source Port." If you set it to "preserve," the client's original source port should be retained. If the source port is already in use by another connection, TMM will select another source port at random. There is also an option called "preserve strict," which you may or may not want to use depending on your situation. In "preserve strict" mode, if the port is already in use, TMM will use the port anyway making the original source of the traffic indistinguishable to the origin server. There are a few cases where this may work, but we don't recommend it unless you have a specific use case for it.
Hope this helps,
-George