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Also known as: alternative ports
Ports other than 119 and 563 that a provider accepts NNTP on, commonly 80, 443 and 8080. They exist because some ISPs, workplaces and hotel networks block the standard news ports while leaving web ports open. Traffic on 443 in particular looks like ordinary HTTPS to simple filtering. Providers usually publish both a plaintext and an encrypted alternate port.
Browse all terms in Protocol & Server Infrastructure, or see the full Usenet glossary.