The SaaS Web Protection Service is delivered using a globally distributed Cloud Services Platform. SaaS Web Protection uses the Global Routing Manager (GRM) Services for intelligent traffic routing, load sharing, and failover. GRM is a DNS infrastructure used to route traffic to the best available SaaS point of presence.
The following Knowledge Base article contains a list of IP addresses and IP ranges that must be whitelisted for the GRM communication:
- KB87232 — SaaS Web Protection Service IP addresses/ranges to whitelist in your firewall ( https://kc.mcafee.com/corporate/index?page=content&id=KB87232)