List of TCP and UDP port numbers - Wikipedia

Jun 19, 2014 Troubleshooting a Port Forward or "Open Ports" that are Company and business operations commonly require the use of equipment that resides on a Private LAN to be accessible from the outside world. Utilizing port forwarding, these devices can be accessed using their specific protocol and ports numbers by configuring the router to forward or "open" these ports … How to view, close or open ports in CentOS 8

COMMON PORTS packetlife.net TCP/UDP Port Numbers 7 Echo 19 Chargen 20-21 FTP 22 SSH/SCP 23 Telnet 25 SMTP 42 WINS Replication 43 WHOIS 49 TACACS 53 DNS 67-68 DHCP/BOOTP 69 TFTP 70 Gopher 79 Finger 80 HTTP 88 Kerberos 102 MS Exchange 110 POP3 113 Ident 119 NNTP (Usenet) 123 NTP 135 Microsoft RPC 137-139 NetBIOS 143 IMAP4 161-162 SNMP 177 XDMCP 179 BGP 201 …

In addition to this, there are a lot of other features such as the security of data packets which is catered by the different types of ports. The versatility of these TCP and UDP ports available enables you to select the most appropriate one for your task according to your requirement. Following are some of the common TCP and UDP default ports. How to view the list of open ports in Windows

This includes the registration of commonly used port numbers for well-known Internet services. The port numbers are divided into three ranges: the well-known ports, the registered ports, and the dynamic or private ports. The well-known ports (also known as system ports) are those from 0 through 1023.

Open port - Wikipedia In security parlance, the term open port is used to mean a TCP or UDP port number that is configured to accept packets.In contrast, a port which rejects connections or ignores all packets directed at it is called a closed port.. Ports are an integral part of the Internet's communication model — they are the channel through which applications on the client computer can reach the software on Port 135 (tcp/udp) :: SpeedGuide Ports are unsigned 16-bit integers (0-65535) that identify a specific process, or network service. IANA is responsible for internet protocol resources, including the registration of commonly used port numbers for well-known internet services. Well Known Ports: 0 through 1023. Registered Ports: 1024 through 49151. Port scanning: How to check your network and computers for Aug 30, 2016