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The Web != The Internet What about VNC/Remote desktop/SSH? What about protocols that don't use port numbers like ICMP and basically everything that's not UDP

by rythie 16y ago

The Web != The Internet What about VNC/Remote desktop/SSH? What about protocols that don't use port numbers like ICMP and basically everything that's not UDP or TCP? What about sites that grab data from other sources, often needing IP whitelisting Sharing IPs for SSL HTTP services is tricky, do dedicated hosting/VPS users actually want to give their certs to the ISP (private keys and all) so they can manage it?

JoeAltmaier 16y ago
...and many P2P UDP protocols don't use a well-known port anyway. Because even if they did, NAT would screw them by mapping it. I agree with the article's rant about port number being obsolete. A service space of 16 bits sucks. IPV6 provides a Solution to this: advertise a different IPV6 address (multi-home) for each service, and use the DNS to resolve, not the TCP address. I think.
- rythie 16y ago
  Actually my point was that with protocols like GRE it difficult to NAT more than one stream through an IP address. Also even if you do work that out (people have it seems) you need to work it out for every protocol which is not how the layers of TCP/IP were supposed to work.
drdaeman 16y ago
Even worse, TCP requires ICMP for PMTU discovery.