Hi
We have successfully the ProxyPass iRule Version 10.9 in place. (https://devcentral.f5.com/wiki/iRules.proxypassv10.ashx)
But because a Web-Service has confidential content the access h...
I would use a NOT condition in the IP check and put it at the top of the CLIENT_ACCEPTED event, with a reject statement if the source IP is NOT in your defined IP range.