TCP 53 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...
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, althoug...
IPv4:IPv4 is the fourth version of the Internet Protocol, and it’s the most widely used. It assigns a 32-bit address to devices (like 192.168.1.1), allowing for about 4.3 billion unique addresses. IPv6:IPv6 is the newer version of the Internet Protocol, designed to replace IPv4. It ...
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 matches human-readable domain names to machine-readable IP addresses, enabling users to load websites and applicatio...
"Domain Users" in local users group isn't appropriate for us. Can I safely remove it? "Drive is not accessible. Access is denied" "Enable computer and user accounts to be trusted for delegation" rights is disabled for Administrator account despite delegation option in the "AD Computer Propert...
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. ...
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, ...
Firewalls, as a measure of safety, always block this port first, if you have it opened. Port 139 is used forFile and Printer Sharingbut is the single most dangerous Port on the Internet. This is so because it leaves the hard disk of a user exposed to hackers. ...
This port is commonly used as it’s supported by many ESPs, ISPs, and cloud web hosting services. Sometimes, it’s used for configuring a virtual private server (VPS). Port 2525 is usually an alternative when encountering connectivity issues with SMTP submission. For instance, if you use po...
这里的built for 是什么意思,整句怎么译呀.A ship in port is safe,but this is not what ships are built for. 答案 停在港湾里的船是最安全的,但这不是船只建造的目的built for是建立相关推荐 1这里的built for 是什么意思,整句怎么译呀.A ship in port is safe,but this is not what ships are bu...