+By definition, every IP address has 65,535 ports. Each port can either be used for inbound or outbound connections for TCP (Transmission Control Protocol) and UDP (User Datagram Protocol). When a public IP address is added as a frontend IP to a load balancer, 64,000 ports are eligible for SNAT. While all public IPs that are added as frontend IPs can be allocated, frontend IPs are consumed one at a time. For example, if two backend instances are allocated 64,000 ports each, with access to 2 frontend IPs, both backend instances will consume ports from the first frontend IP until all 64,000 ports have been exhausted.
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