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| Proto/Port | Description |
|---|---|
| 20/tcp | FTP data connection |
| 21/tcp | FTP control connection |
| 22/tcp | Secure Shell (SSH) remote login protocol |
| 23/tcp | Telnet protocol |
| 53/tcp 53/udp | DNS |
| 67/udp | Bootstrap protocol or DHCP Server |
| 68/udp | Bootstrap protocol or DHCP Client |
| 80/tcp | World Wide Web HTTP |
| 123/udp | Network Time Protocol (NTP) |
| 161/udp | Simple Network Management Protocol (SNMP) |
| 179/tcp | Border Gateway Protocol (BGP) |
| 443/tcp | Secure Socket Layer (SSL) encrypted HTTP |
| 500/udp | Internet Key Exchange (IKE) protocol |
| 520/udp 521/udp | RIP routing protocol |
| 546/udp | DHCPv6 Client message |
| 547/udp | DHCPv6 Server message |
| 646/tcp | LDP transport session |
| 646/udp | LDP hello protocol |
| 1080/tcp | SOCKS proxy protocol |
| 1698/udp 1699/udp | RSVP TE Tunnels |
| 1701/udp | Layer 2 Tunnel Protocol (L2TP) |
| 1723/tcp | Point-To-Point Tunneling Protocol (PPTP) |
| 1900/udp 2828/tcp | Universal Plug and Play (uPnP) |
| 1966/udp | MME originator message traffic |
| 1966/tcp | MME gateway protocol |
| 2000/tcp | Bandwidth test server |
| 5246,5247/udp | CAPsMAN |
| 5350/udp | NAT-PMP client |
| 5351/udp | NAT-PMP server |
| 5678/udp | Mikrotik Neighbor Discovery Protocol |
| 6343/tcp | Default OpenFlow port |
| 8080/tcp | HTTP Web Proxy |
| 8291/tcp | Winbox |
| 8728/tcp | API |
| 8729/tcp | API-SSL |
| 20561/udp | MAC winbox |
| /1 | ICMP |
| /2 | Multicast | IGMP |
| /4 | IPIP encapsulation |
| /41 | IPv6 (encapsulation) |
| /46 | RSVP TE tunnels |
| /47 | General Routing Encapsulation (GRE) - used for PPTP and EoIP tunnels |
| /50 | Encapsulating Security Payload for IPv4 (ESP) |
| /51 | Authentication Header for IPv4 (AH) |
| /89 | OSPF routing protocol |
| /103 | Multicast | PIM |
| /112 | VRRP |
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