Step 1: First, log on to the server remotely. After logging in, enter gpedit.msc during operation, expand computer configuration-windows settings-security settings to open IP security policy, and then find the allowed udp.

Step 2: Double-click Allow udp in turn, select Allow udp and Double Line, then select the first one described as Allow UDP for Double line by default, and then click Add. After clicking Next, you will be prompted to fill in the udp description. For example, take11as an example, and click Next. Choose my IP address as the source address, choose any IP address protocol type as the destination address, choose udp protocol port, choose this port to any port, then confirm to save, and finally add a udp port on the firewall.

Windows2008 system policy opening is the same as windows2003, but the firewall is slightly different. Start-Administrative Tools-Advanced Security Window Firewall, then right-click Inbound Rule-Create a new rule and select a port for the rule type. Then, next, choose udp as the port type and local as the port. Next, fill in the udp name. Some users' server ports are in TCP/IP port filtering. If filtering is enabled, please.