Forum Discussion
NimbostratusSNAT
I am looking for a irule that will map the source address of specific machines. The situation is that I am load balancing using a pool / VS on my LTM . I need to ensure that ALL machines even if they are on the same subnet) get routed through the LTM. So simply stated I want to use auto map for 1 subnet which all the nodes / pool members are on and all other connections wont use auto map.
5 Replies
natheCirrocumulus
So, on the VS don't have an option for Source Address Translation and then an irule like this might do the trick:
when CLIENT_ACCEPTED { Check if client is in same subnet as pool members if {[IP::addr [IP::client_addr] equals x.x.x.x/x]}{ Use snat automap snat automap } }Change x.x.x.x/x to the relevant subnet and any source IP on this range will use SNAT automap. If not then no SNATing will be done.
Hope this helps,
N
pedinopa_170325I added the irule (changed x.x.x.x/x to ip subnet) and attached it to the virtual server. It does not appeaar to be working?
- natheHmmm. Check out this wiki. Has an example just like your scenario using LB_SELECTED event. https://clouddocs.f5.com/api/irules/SelectiveSNAT.html
- pedinopa_170325
that worked great thank you
- natheNo probs. Glad I could help.
