Protocol number and port number summary for various protocols and applications (constantly updated)

The protocol port is always encountered when configuring firewall policies, releasing traffic, and testing services in the workplace. For example, I only allow Telnet traffic to pass, and then I need to know the port number of the Telnte protocol. Network protocol so much, some of the commonly used we may remember, and some are not very common protocol to use the time may be forgotten. To this end, the author for the convenience of themselves and everyone, will be some of the Protocol's port number collection, this article will be constantly updated. I hope readers will send me some of the usual ports, I am unified here.

VPN-related protocols:

PPTP: The control plane uses the TCP1723 port and the data plane is encapsulated in GRE (IP protocol number 47).

L2TP: Unencrypted L2TP are enclosed in UDP1701 ports and need to look at the Tunnel encapsulation protocol used after encryption.

IKE: Both source and Target are UDP500. (that is, the ISAKMP message that is usually seen)

GRE: Is directly encapsulated in the IP packet, the IP protocol number is 47.

ESP:ESP and GRE, are directly encapsulated in IP, the IP protocol number is 50.

Ah:ah, like ESP and GRE, are directly encapsulated in IP with the protocol number 51.

NAT-T: After using NAT-T technology, the previous data is encapsulated in UDP4500.

SSL:TCP 443 Port

Common Application Layer protocols:

Http:tcp80

HTTPS:TCP 443

FTP:TCP21 is the control plane, and 20 is the data plane. (Note whether the FTP is passive or active mode)

Ssh:tcp22

Telnet:tcp 23

Remote Desktop: 3389

SQL Server TCP 1433

Dns:

Dhcp:

Dynamic routing protocol:

Rip:udp520,rip V2 Multicast Address 224.0.0.9

EIGRP:IP Protocol 89 Multicast address: 224.0.0.10

OSPF:IP Protocol 88 Multicast address: 224.0.0.5 (normal) 224.0.0.6 (DR and BDR)

BGP:TCP 179

Summary of protocol numbers and port numbers for various protocols and applications (constantly updated)