Internet access problems in liunx

Linux general technology-Linux technology and application information for Internet access in liunx. For details, refer to the following section. I am also a beginner. I just learned about surfing the Internet in linux. There are many restrictions on the campus network on linux, mainly due to the certificate client of ruijie. There are many authenticated clients on the Internet, most of which have drawbacks. For red hat and fedaro 5's use of myxrgsu.rar is better, and there is no problem of disconnection. If you change the ip address, you can access the Internet smoothly.
Use the sudo command under the Super User to put the three lib files decompressed by Myxrgsu under/usr/lib, then run myxrgsu, enter the account and password, the default value is enough. If the problem persists, go to system --- management --- network, activate eth0, and double-click eth0. In general, there is a set MTU to box selected, activate eth0 and wait for a while before you can access the Internet.