DNS 服务器间的区域传输(Zone Transfer)使用 **TCP 53** 端口,原因如下: 1. **可靠性需求**:区域传输需要传输完整的 DNS 数据库文件(如区域文件),数据量大且需要可靠的连接。TCP 提供可靠传输机制(如重传、校验),而 UDP 无此保障。 2. **协议规范**:DNS 标准(RFC 5936)明确要求区域传输必须通过 TCP ...
AnOTGorOn The Go adapter(sometimes called anOTG cable, orOTG connector) allows you to connect a full sized USB flash drive or USB A cable to your phone or tablet through the Micro USB or USB-C charging port. You may have gotten one in the box when you purchased your device, althou...
✅ What is port 8181 used for:iPhone port 8181 open on my iPhone port 8181 open on my network and don’t know what it is used for...
"Enable computer and user accounts to be trusted for delegation" rights is disabled for Administrator account despite delegation option in the "AD Computer Properties" being "Trust this computer for delegation to any service (Kerberos only)" "Error issuing replication: 8453 (0x2105)" when doing a...
Port 0 carries special significance in network programming, particularly in theUnixOS when it comes tosocket programmingwhere the port is used to request system-allocated, dynamic ports. Port 0 is a wildcard port that tells the system to find a suitable port number. ...
Port 22: Secure Shell (SSH). SSH is one of many tunneling protocols that create secure network connections. Port 25: Historically, Simple Mail Transfer Protocol (SMTP). SMTP is used for email. Port 53: Domain Name System (DNS). DNS is an essential process for the modern Internet; it mat...
The AD process is used for message forwarding between controllers during expansion. Log in to the CLI of each controller to be added. You must perform 2 to 4 for every newly added controller. If you cannot log in to a controller (for example, controller A) using the serial port or manag...
While Port 139 is known technically as ‘NBT over IP’, Port 445 is ‘SMB over IP’.SMBstands for ‘Server Message Blocks’. Server Message Block in modern language is also known asCommon Internet File System. The system operates as an application-layer network protocol primarily used for of...
From→TCP and UDP ports used by Apple software products - Apple Support Port TCP or UDP Service or protocol name RFC Service name Used by 500 UDP Wi-Fi Calling 5996I KEv2 Wi-Fi Calling Reply User profile for user: lhewitt92 lhewitt92 Author User level: Level 1 8 points Jun 22, ...
If you purchased a car built after 1996, it probably has an OBD-II port. But what is it for, and how do you diagnose errors with it?