Individual collection of multi-host internet access to vrouters blocked by China Telecom

First of all, I declare that the city on my side has not been blocked by China Telecom, so there is no way to do the test. The following information is obtained from the Internet. The specific results still need to be tested by friends, if it is valid, remember to send a reply. If it is invalid, please forgive me.
The first is TP-LINK.
M vrouters have upgrade patches and special dial-up options to lift Telecom restrictions
If the use of TP-LINK M router friends can download the patch
Patch: http://up2.zol.com.cn/bbs_upload/upload/2007/03_25/1174805678620.zip
The following methods are available:
1. check whether there are different MAC addresses in the packets with the same IP address. If so, determine that the user shares the internet. The solution is to change the MAC address of each server to the same one. There are many ways to modify the MAC address, so I will not go into details here. I will use Google to search for the keyword "Modify MAC address.
Ii. SNMP (Simple Network Management Protocol) is used to discover multi-host internet access. Some routers and ADSL cats have built-in SNMP services. You can use corresponding tools to check whether users share the services. If you want to know whether your router or big cat has enabled the SNMP service, you can find a scanning software (ipscan, superscan ......) scan. If port 161 is enabled with the built-in SNMP Service, the solution is to disable port 161 for SNMP.
If you use a vro or enable the ADSL Cat's route mode to share the Internet, you can go to the management interface and turn it off with the SNMP option. If the management interface of the cat does not have to disable the SNMP option, you have to buy a router without the SNMP service, such as the TP-LINK
TL-R400, put in ADSL
In the middle of moden and hub, create a NAT service in the vro. In this way, an address is entered into the ADSL cat, which solves the problem of Internet sharing.
3. Monitor the number of concurrent ports. If the number of concurrent ports exceeds the set number, it is determined to be shared.
This is an unpleasant setting. "Network Vanguard" constantly scans the number of ports opened by users. If it is more than the set value, it is determined to be shared, sometimes, when you press the F5 key several times, it is considered to be shared, and a single user is also affected to access the Internet. This cannot be cracked (unless you have hacked the network ), the solution here is to install an innocent user to call the ISP's customer service, and declare that the ISP will be changed if the problem is not solved, and the network will be normal in a short time;
4. "Network Vanguard" also used an unknown method to test shared information from the shared computer. The solution is to install a firewall on all shared clients, set the security level to the highest, due to limited conditions, only tried several firewalls, found Kingsoft network router V (http://www.gz-pet.com/Soft_Show.asp? Softid = 10) useful: do not allow all rules in the IP configuration rule to allow others to access the local machine, allow ping to the local machine, and prevent ICMP attacks. also select this option. If it is WINXP, open the network firewall of the NIC.
After the above method is used, the local machine cannot be seen in the local area network, and after WINXP opens the network firewall of the NIC, files cannot be transmitted on QQ, and the network speed slows down, but we can finally share it again. If you have a good solution, please let us know.
The last one is to try "shared Alibaba Cloud security". Try it after installation.