For home network users, the setup requirements aren’t very demanding, and there’s little risk of malicious attacks. Therefore, you can use some simple methods to configure the necessary settings, reducing workload and making future maintenance easier.
1. If someone on the network uses BT or P2P downloads, it can consume a large amount of bandwidth and prevent others from accessing the internet. Sometimes, software may also be uploading data without the user’s knowledge, such as download managers like Thunder. In these cases, we can use various methods on the router to prevent such situations.
2. Port blocking can only limit P2P software usage on a small scale and isn’t very effective, because many P2P applications allow users to manually specify the listening port. Even if manual port configuration isn’t available, the software typically uses a wide range of listening ports, usually from 0 to 65535.
If the usage is limited to web browsing, email, and instant messaging like QQ, you can simply block most of the unnecessary ports.
3. A host using P2P within a LAN can connect to far fewer external hosts, but this doesn’t completely stop P2P software from working. You can configure settings under “Security Settings – IP Address Filtering.” Since Thunder servers typically use ports 3076, 3077, and 3078 to communicate with clients, blocking these three ports will significantly reduce Thunder’s download speed. The method for blocking listening ports of other P2P software is similar. Of course, there are many ports, and which specific ones to block depends on your needs, as long as it doesn’t affect your normal work or gaming.
4. You can also apply a uniform speed limit to all IPs on the router, which can be done in the router’s IP Bandwidth Control settings. Here, you need to set the upload and download speeds for each IP range. Generally, if all hosts have equal bandwidth priority, setting them to the same values works fine. Since ADSL upload bandwidth is inherently small, special attention should be paid to limiting the upload bandwidth of individual machines. This method is suitable for broadband routers with IP QoS functionality.
5. Another method is to limit the number of connections per computer to achieve rate limiting. This approach restricts the connection count for all hosts on the LAN, primarily because a broadband router maintains connection entries for applications when performing NAT translation.