This month’s column examines Web Application Gateways for enterprise deployments. WAG appliances sit in front of Internet-facing applications to repel attacks before they reach application or Web servers. The Yankee Group predicts that WAG functionality will join other blade implementations for firewall, anti-virus, content filtering as part of an integrated integrated integrated security, and content service security. The majority of application attacks arrive through ports 80 (HTTP) or 443 (SSL), thus WAG deployments are most prevalent.”]
Source: https://www.csoonline.com/article/2116207/web-application-gateways-bolster-security.html