UDP/IP stands for User Datagram Protocol/Internet Protocol. See also TCP/IP
| Layer 7: Application Layer | HTTP, HTTPS, SMTP, FTP, UUCP, NNTP, SSH, IRC, SNMP, SIP, RTP, Telnet |
| Layer 6: Presentation Layer | AFP, Telnet, FTP, SMTP, SMB, NCP, Net RPC |
| Layer 5: Session Layer | ASP, NetBIOS, Net RPC |
| Layer 4: Transport Layer | TCP, UDP, SCTP, DCCP, ATP, VIPC, NetBEUI, SPX, SPP |
| Layer 3: Network Layer | IP, IPv4, IPv6, ICMP, ARP, IGMP, DDP, VIP, IPX, IDP, CLNP, NetBEUI |
| Layer 2: Data Link Layer | Ethernet, Wi-Fi, Token ring, FDDI, PPP, ODI, NDIS, ATM, NIC's, ARCNET |
| Layer 1: Physical Layer | RS-232, EIA-422, RS-449, EIA-485 |