...应用层。 通常,存储要传输的文件的FTP服务器使用两个端口进行传输,一个用于命令,另一个用于发送和接收数据。来自客户端计算机的请求在服务器的端口21接收,该端口专门用于发送命令;因此,它被称为命令端口。一旦接...
... 并不是每个人都知道如何有效地使用vpn或代理站点,但是使用这些技术,您应该能够绕过遇到的任何障碍,而不会跳过太多的障碍。 ...
...信息。在“代理主机名”框中输入代理的地址。不管框名如何,您都可以输入两个主机名,如“proxy.example.com和IP地址,比如这里的“192.168.1.100”。请提供您所拥有的任何类型的地址。在“代理端口”框中输入代理所需的端口。 ...
...着你必须放弃以太网端口:请继续阅读,我们将向你展示如何廉价、轻松地为最薄的超薄笔记本电脑添加以太网可访问性。 Dear How-To Geek, I love my new Windows ultrabook. It’s super light, super thin, and all around the laptop I dreamed of back in the 199...
...者Samuel Alexander想知道为什么选择80和443作为默认HTTP和HTTPS端口: Why was port 80 chosen as the default HTTP port and 443 as the default HTTPS port? Is there any particular reason or was it just defined that way? 为什么选择80和443作为默认的HTTP和HTTPS端口? 答案 ...
... block” means that incoming new connecti*** are blocked, but established traffic is allowed. So if outbound new connecti*** are allowed, then the incoming half of that exchange is okay. The firewall manages this by tracking the state of connecti*** (such a firewall is often called a Stateful Firew...
... connected directly to the Internet. He may be able to sniff your Internet traffic though (since he is between you and the Internet). You can read through these other SuperUser questi*** for more information: How much information can my ISP see? What information can my ISP see from my router? 接...
...行以下几个命令之一: sudo ufw allow 22 (Allows both TCP and UDP traffic – not ideal if UDP isn’t necessary.) sudo ufw allow 22/tcp (Allows only TCP traffic on this port.) sudo ufw allow ssh (Checks the /etc/services file on your system for the port that SSH requires and allows it. Ma...