Port Assignments For Commonly-Used Services

IMAP and POP3 are the two most commonly used Internet mail protocols for retrieving emails.

Both protocols are supported by all modern email clients and web servers.

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This tutorial explains the most commonly used Email protocols on the internet - POP3, IMAP and SMTP.

By default, the initial node runs the License service.

If you change port assignments and you are running a local firewall, see Local firewall configuration.For more information, see Ports that are not dynamically mapped, below.Note: This operation includes steps that you may need to perform using the TSM command line.Post Office Protocol version 3 (POP3) is a standard mail protocol used to receive emails from a remote server to a local email client.POP3 allows you to download email messages on your local computer and read them even when you are offline.You can control what ports are used in a variety of ways.A small subset of processes do not use dynamic port mapping and behave uniquely. UDP is often used with time-sensitive applications, such as audio/video streaming, where dropping some packets is preferable to waiting for delayed data. It connects to IRC servers and listens for remote commands on port 8080/tcp. Like TCP (Transmission Control Protocol), UDP is used with IP (the Internet Protocol) and makes possible the transmission of datagrams from one computer to applications on another computer, but unlike TCP, UDP is connectionless and does not guarantee reliable communication; it's up to the application that received the message to process any errors and verify correct delivery.In Windows NT it ran on top of Net BT (Net BIOS over TCP/IP, ports 137, 139 and 138/udp). It can also be disabled by deleting the HKLM\System\Current Control Set\Services \Net BT\Parameters\Transport Bind Name (value only) in the Windows Registry. We also recommend runnig multiple anti-virus/anti-malware scans to rule out the possibility of active malicious software.In Windows 2K/XP, Microsoft added the possibility to run SMB directly over TCP/IP, without the extra layer of Net BT. Leaving port 445 open leaves Windows machines vulnerable to a number of trojans and worms: W32. Deloder [Symantec-2003-030812-5056-99] Iraqi Worm (aka Iraq_) W32. For more detailed and personalized help please use our forums.


Comments Port Assignments For Commonly-Used Services

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