Reference documentation and code samples for the Compute Engine v1 API enum ForwardingRule.Types.IPProtocolEnum.
The IP protocol to which this rule applies. For protocol forwarding, valid options are TCP, UDP, ESP, AH, SCTP, ICMP and L3_DEFAULT. The valid IP protocols are different for different load balancing products as described in Load balancing features.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-08 UTC."],[[["\u003cp\u003eThis page provides reference documentation for the \u003ccode\u003eForwardingRule.Types.IPProtocolEnum\u003c/code\u003e enum within the Google Cloud Compute Engine v1 API, specifically for .NET.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version documented is 3.6.0, with a range of previous versions also available, extending down to version 1.0.0, as well as the current version 2.9.0.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eIPProtocolEnum\u003c/code\u003e defines the valid IP protocols for forwarding rules, such as TCP, UDP, ESP, AH, SCTP, ICMP, and L3_DEFAULT, which varies by load balancing product.\u003c/p\u003e\n"],["\u003cp\u003eThe documented fields within the \u003ccode\u003eIPProtocolEnum\u003c/code\u003e are \u003ccode\u003eAh\u003c/code\u003e, \u003ccode\u003eEsp\u003c/code\u003e, \u003ccode\u003eIcmp\u003c/code\u003e, \u003ccode\u003eL3Default\u003c/code\u003e, \u003ccode\u003eSctp\u003c/code\u003e, \u003ccode\u003eTcp\u003c/code\u003e, \u003ccode\u003eUdp\u003c/code\u003e, and \u003ccode\u003eUndefinedIPProtocolEnum\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,[]]
