Show Menu
Cheatography

TCP/IP stands for Transmission Control Protocol and IP for Internet Protocol. These protocols are responsible for transporting and managing the data across the network

VPN Ports: Your Entry and Exit

VPN Ports: Your Entry and Exit
The network port refers to the number assigned to each message. The standard network portals like TCP, IP, UDP usually attaches port number to the data it sends. The type of service provided is based on this port number. This assignment is usually based on logic. Learn more about hardware and software VPN ports. Simply read on.
The article covers
• IP Addresses
• Software ports
• VPN ports and Hardware Ports

IP Addresses

 
TCP/IP stands for Transm­ission Control Protocol and IP for Internet Protocol. These protocols are respon­sible for transp­orting and managing the data across the network. The IPv4 requires a 4 byte address to be assigned to each network interface card that exists on all the computers in the network where as the Ipv6 assigns a 6 byte address. IP Addresses works almost like a house address without which determ­ining where data packets go would be imposs­ible.
 

IP Checking

 
The part of the IP address that defines the network is the network ID, and the latter part of the IP address defining the host address is the host ID. By the way, if you need to find out the IP address of your device, you can do this by visiting http:/­/ip­-lo­cat­ion­s.org. It will display your current IP and location.

Using port

 
Using this port and addressing scheme, the networking system can pass data, addressing inform­ation, and type of service inform­ation through the hardware, from one computer to another.

Software ports

 
The network port is usually number and standard network protocols like TCP, IP, UDP attaches a port number to the data it sends. A port number is to be assigned to each message according to the TCP layer requir­ements. This port (logical reference) number determines the type of service provided. This software network port (address in the form of a number) is assigned to a service for commun­icating between a program and another progra­m/c­omm­uni­cation system.

The naming systems

 
This naming system is logical and pertains to the services that carry on long term conver­sation. A list that specifies the port used by the server process is known as its contact port. A service contact port is defined to provide specific service to unknown callers. These software network ports also connect internal programs on the same computer. Numbers from 0 to 1023 are used to identify a network service on the internet (Internet Protocol).

IP packets

 
Each IP packet contains a TCP or UDP header which directs applic­ations to the approp­riate applic­ation in the server. Reserved port numbers and unassigned numbers can be used by applic­ation programs.

The IANA

 
The Internet Assigned Numbers Authority (IANA) registers ports 1024 to 49151 for the conven­ience of internet contin­uity. Port numbers from 49151 to 65535 are called dynamic ports and are private. You could look up IANA for more details on assigned port numbers. The most well-known port is 80, which identifies HTTP traffic for a Web server.

The Well Known Ports

 
The Well Known Ports are assigned by the IANA and on most systems can only be used by system (or root) processes or by programs executed by privileged users. Port numbers are straight unsigned integer values which range up to a value of 65535. Below is a list of well known ports and their services.
 

Ports&Se­rvices

 
20,21 FTP (File transfer)
22 SSH (Remote login secure)
25 SMTP (Internet mail)
53 DNS (Host naming)
80 HTTP (Web)
88 Kerberos (computer authen­tic­ation protocol)

Ports&Se­rvices

 
110 POP3 (Client access)
119 NNTP (Usenet newsgr­oups)
123 NTP (Network time)
137-139 NetBIOS (DOS/W­indows naming)
143 IMAP (Client access)
161,162 SNMP (Network manage­ment)
163,164 CMIP (Network manage­ment)

Ports&Se­rvices

 
443 HTTPS (Web secure)
514 Syslog (Event logging)
563 NNTPS (Usenet newsgroups secure)
993/tcp IMAP4 over SSL, Internet Message Access Protocol
995/tcp POP3 over SSL, Post Office Protocol
989,990 FTPS (File transfer secure)
1723 Virtual private network (VPN)

Help Us Go Positive!

We offset our carbon usage with Ecologi. Click the link below to help us!

We offset our carbon footprint via Ecologi
 

Comments

No comments yet. Add yours below!

Add a Comment

Your Comment

Please enter your name.

    Please enter your email address

      Please enter your Comment.

          Related Cheat Sheets

          Linux - Proton VPN Cheat Sheet