Screen port SMS screen port ddos

1900 port

Shutdown method: disable and stop the SSDPDiscoveryService service in the service and close the port 1900.

Uncheck the Upnp Support checkbox in windows Firewall Settings and close port 2869.

Port description: Port 1900 is the SSDPDiscoveryService service. Closing UDP port 1900 can prevent DDOS attacks.

Recently, I have been attacked frequently, and the internet speed is extremely slow. After verification, someone did use ARP attack, so I just installed an ARP firewall.

Router ddos defense settings?

1, source IP address filtering

Filtering source IP addresses at all ISP network access or aggregation nodes can effectively reduce or eliminate source IP address fraud, and make various DDoS attacks such as SMURF and TCP-SYNflood impossible to implement.

2. Flow restriction

Controlling certain types of traffic, such as ICMP, UDP and TCP-SYN, at network nodes and limiting their sizes to a reasonable level can reduce the impact of denial of DDoS attacks on the host network and the target network.

3.ACL filtering

Filter the traffic of worm attack port and DDoS tool control port without affecting the business.

4.TCP interception

In view of TCP-SYNflood attack, the user can consider enabling the TCP interception function of the gateway device to resist. Because turning on TCP interception function may have a certain impact on router performance, it should be considered comprehensively when using this function.