>523関連でソフトもあったので紹介しておきますね。

http://qb5.2ch.net/test/read.cgi/operate/1086309933/483


ttp://sourceforge.net/projects/balance/

Balance is a simple but powerful generic tcp proxy with round
robin load balancing and failover mechanisms. Via shared memory
its behaviour can be controlled at runtime using a simple command
line syntax.