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Hi. I'm trying ZENLB (latest public version: 3.02) as a choice to substitute our ancients Alteon balancers but I have a problem: We want to balance a web application BUT WE NEED that the backend servers receive the client connections WITH THE IP OF THE ORIGINAL CLIENT. First I've created a farm with a HTTP profile and runs BUT the IP of the connections is the ZENLB IP, NOT the client IP...so it's useless for us. So I've tried to create a farm with the L4TNAT profile BUT doesn't run OK: - the IP the backend servers receive is the client IP...OK - the backend servers sends their response (TCP establishment packets) trough ZENLB...OK - but the client receives NO RESPONSE from ZENLB...FAIL I've tried several network/gateways configurations but none of them seems to run OK, and the online documentation doesn't cover the L4TNAT so...I don't know if I've done something wrong, I doesn't have understood the L4TNAT operation or ZENLB has some bug/problem with the L4TNAT profile. The network configuration: ZENLB configuration: Network:Farm: Backend server configuration:Profile: L4TNAT eth0: 192.168.31.YY -> Private IP for service Tcpdump shows: - CLIENT_IP initial packet -> ZENLB -> Backend Server * the path/NAT of the initial packet seems to be OK - Backend Server ansver -> ZENLB -> ???? * the "right" packet is received by ZENLB but NOT by he client * Perhaps response packet is received by ZENLB but...it comes out from ZENLB? Any idea? Thanks --
Jose Manuel Blanco Cortiñas |
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