Forum Discussion
NimbostratusLoad balance related quistion
Is it possible to identify which client has accessing the server after passing through f5 load balance? or in other words can the application servers know from which client does the request come?
3 Replies
IheartF5_45022Nacreous
If the F5 is 'inline' - within the routing path between the client and server, then there is no reason the server would not see the real client address.
If however the F5 is not inline and you need to force server return traffic back to the F5 using a SNAT and you are talking about HTTP traffic, then you can insert an X-Forwarded-For header using the http profile. X-Forwarded-For will contain the original client source.
- Well said. Also good to know is that you will need a filter for IIS, configure Apache etc. to be able to log the header instead of the SNAT IP (if you use snat). /Patrik
Hi,
If you don't use any type of SNAT towards your pool members, they will see the Client IP address connecting to them.
If you want to use SNAT and still have the back-end recognize the client address, you can use the X-Forwarded-For header with an HTTP profile. http://en.wikipedia.org/wiki/X-Forwarded-For
Hope this helps.
