Mine is an optical network card. You have to dial every time you surf the internet, and even the wireless router can't. What happened? Are there any restrictions?

The network operator blocked the route, which made it impossible for netizens who used the router to access the Internet, including my computer. Facing the limitation of network operators, the following is what I extracted from the internet, and the software mentioned in it is uploaded to share with you.

First download a software that enjoys Aegis version 2.0.

A use * * * enjoy aegis.

Generally, after upgrading broadband routing, computers in the local area network can surf the Internet at the same time as before with ease and pleasure. However, it is recommended that you install * * * Enjoy Shield on each computer. * * * enjoys the shield, which can not only prevent operators from discovering that * * * enjoys broadband, but also make a breakthrough when operators restrict * * * enjoyment. * * * access is very simple to use. As long as "Aegis" is installed and enabled in all computers that need * * * Internet access, there is no need to set up any software. You can break through the * * * access restrictions by keeping the default settings, and you can check the running status of the network on any host.

Very few users will get the prompt of "Failed to start the transponder" when starting Aegis, because there are more than two network cards in the host. At this time, after entering the software interface, click the item "Break the * * * access restriction" on the left, and then select the network card to access the Internet under "Please select a network interface to access the Internet" on the right. Finally, save the configuration and restart "* * access Aegis".

Second, crack the MAC address restrictions.

Many small and medium-sized enterprises use "optical fiber to the building, network cable to the home" to connect to the Internet. For the convenience of management, the network management of office building property office controls the network by binding IP address and MAC address. If the computer network card is damaged or the enterprise updates the computer, it needs to re-apply to bind the physical address (MAC address) of the network card with the IP address, but many property management companies charge the fee for this project. In order to save the operating costs of enterprises, they have no choice but to modify the MAC address of the network card themselves.

1. Modify the MAC by hand.

The Windows operating system will first query the MAC address of the network card from the system registry. If the MAC address of the network card is stored in the system registry, it will recognize the MAC value in the registry as the actual physical address of the network card, and will not continue to ask the network card for its "ID card". So you can modify the MAC address by modifying the registry, but the steps to modify the registry are too complicated, so it is recommended to modify it in the Control Panel. The method is to execute "Control Panel → Network Connection", right-click the "Local Connection" icon to execute the "Properties" command, and click the "Configure" button in the pop-up "Local Connection Properties" to enter the network card properties dialog box; Then click to switch to the "Advanced" tab and select the "Network Address" value under "Properties"; Finally, click the input box above the "non-existent" value, enter the MAC address of the original network card, and press OK to finish.

Tip: When entering the MAC address here, don't enter the "-"in the middle of the MAC address, just enter numbers and letters, such as "000C7633AE3F".

Step 2 modify with tools

Some network cards cannot modify the MAC value of the network card by the above means, because there is no "network address" item to choose from. At this time, you might as well borrow professional tools and software. K-mac is such a green and free tool to modify mac address. After the software runs, the interface is as shown in the figure. First, click the selection box after "Select Network Card" and select the network card whose MAC address is to be modified. At this point, the current MAC address of the network card will be displayed in "Current Address", and then you can enter a new MAC address in the "Modify Address" input box below it. Please be careful not to enter "-"in the middle of the MAC address.

Step 3 repair the MAC address

Although the above method can modify the MAC value of the network card in the registry and cheat the monitoring settings of routers, servers, etc. Because these values are stored in the registry, once the operating system is reinstalled, the MAC address will be lost, and it is really annoying to re-enter the MAC address. It is better to "solidify" the new MAC address into the network card yourself. PG8 139 is such software. Unfortunately, only Realtek8 139 series network cards can be modified, but considering the strong market share of 8 139 series network cards, its application scope is still very wide. Pg8 139 runs in Dos mode, and users who use Windows2K/XP will get the error of "No Card Found" if they forcibly run it in the "Command Prompt" interface. Therefore, to switch to DOS real mode in advance, it is suggested that users of Windows2K/XP install "Dwarf DOS Toolbox", and after restarting the computer, select "DOS Toolbox" in the operating system selection menu to enter DOS real mode. Then,

Thieves have an idea. While using the above methods to protect your rights and interests, don't act as a "second-tier operator" privately, and split your installed broadband to other users for use, and charge fees, which is explicitly prohibited!

ADSL*** enjoys surfing the Internet in two ways, one is proxy and the other is address translation (NAT). The routing mode that people often say is actually NAT mode. In fact, the principles of routing and NAT are still different, which will not be discussed here. Now ADSL cats generally have the function of NAT, so it is more economical and convenient to enjoy surfing the Internet with its own functions. This paper mainly discusses this way.

If you want to block multiple computers from surfing the Internet, you must find out whether there are multiple computers behind you. The working principle of NAT is shown in figure 1. After NAT conversion, the addresses of computers accessing the external network are all changed to192.168.0.1,and the MAC addresses are also converted to the MAC addresses of ADSL, that is, in principle, they are directly at the ADSL exit. How did you find out? Through research, it is found that it uses a variety of methods to detect whether users use * * * to surf the Internet, thus restricting it. The following are cracked:

1. Check whether there are different MAC addresses in packets with the same IP address. If there are, judge that users like surfing the Internet. The solution is to change the MAC address of each computer to the same one. The modification method is as follows:

First, get the MAC of this machine: The MAC address is the physical address solidified in the serial EEPROM on the network card, which is generally 48 bits long. Ethernet switches exchange and send packets according to the MAC source address and MAC destination address in the packet header.

(1) in Windows 98/Me, click start → run → enter winipcfg"→ enter.

2 In Windows 2000/XP, click Start → Run → Enter CMD"→ Enter → Enter ipconfig /all"→ Enter.

Or right-click the local area connection icon, select the status and click the Support tab, where "Details" contains MAC and other important network parameters.

1. If your network card driver directly provides the function of cloning MAC address, such as RTL8 139 chip produced by RealTek, congratulations. Click Start → Settings → Control Panel, double-click Network and Dial-up Connection, right-click the icon of the network card whose MAC address needs to be modified, and select Properties. On the General tab, click the Configure button, and then click the Advanced tab. In the Properties area, you should see an item named Network Address or Locally Managed Address, click it, and enter the MAC address value you want to specify under Value on the right. To enter 12 numbers or letters continuously, do not enter "-"in the middle. The setting will take effect after the system is restarted once (Windows 98 and Windows 2000/XP have slightly different user operations, please refer to the system description).

2. If your network card driver does not provide the function of cloning MAC address, here are some ways to find one that suits you.

Under WIN98:

A. Right-click the Network Neighborhood icon and select Properties to open the Network dialog box. In the Configuration box, double-click the network card you want to modify to open the network card properties dialog box. In the "Advanced" option, click the "Network Address" item under the "Properties" label, select one of the two items on the right, and then enter the MAC address of the network card you want to modify in the box. After clicking OK, you will be prompted to restart. After restarting, your network card address will be successfully modified! !

B Click "Start → Run", type "winipcfg", select the network card to be modified, and record the MAC address value. Click "Start → Run", enter "regedit" to run the registry editor (the registry must be backed up before modification), and find "HKEY _ local _ machine \ system \ current control set \ service \ network" in turn according to the registry tree structure, and you will see something similar to "0000" and "0006438". Click from the subitem "0000" and look for the contents of the subitem "DriverDesc" in turn until we find the registration information of the network card exactly the same as the target we are looking for.

After finding the correct network card, click the drop-down menu Edit → New → String with the name "networkaddress". Double-click the newly created "Network Address" string name and enter a numerical value. Enter the new MAC address value you specified. The new MAC address should be a number or letter of 12 without "-",similar to "00c095ebc761".

There are two ways to activate a new MAC address:

If you use a normal built-in network card, you must restart your computer for the changes to take effect.

If you are using a PCMCIA card, you can perform the following steps without restarting the operating system: run winipcfg, select and release DHCP settings, and then close winipcfg. Open the control panel or the system tray "PCMCIA", stop and eject the PCMCIA network card. Reinsert the PCMCIA network card, open winipcfg, select and refresh DHCP settings, and run winipcfg to ensure that the modified MAC address has taken effect.

Under WIN2000:

A. Right-click the My Network Places icon on the desktop and select Properties. In the "Network and Dial-up Connections" window that appears, there are generally two icons, one is the "New Connection" icon and the other is the "My Connection" icon. If you have two network cards on your machine, there are three icons. If you only have a network card, right-click the My Connection icon and select Properties to open the My Connection Properties window. At the top of the diagram, there is a sign "Use when connecting". This is the model of the network card on your machine. There is a "Configure" button below. Click this button to enter the network card properties dialog box. There are five property pages in this dialog box. Click the second "Advanced" page, and there are two items under the "Properties" label: one is "Link speed/duplex mode", which is to set the working speed of the network card. What we need to change is the following "network address". Click this item. There are two radio options under the "Value" logo on the right side of the dialog box, and the default value is "Does not exist". We just need to select the radio above, then enter the MAC address of the network card you want to change in the box on the right, and click OK. After a while, the network card address will be changed, and you don't even have to stop using the network card!

You can also open the property page of the network card in "Settings Manager" to modify it, and the effect is the same.

B. 1。 In "HKEY _ Local _ Machine \ System \ Current Control Set \ Control \ Class \ 4D36E972-E325-11ce-BFC1-08002be10366. 0000,00010002 "and other primary keys, because you may have installed multiple network cards, there may be multiple primary keys similar to" 0000,0001"under this primary key. At this time, you can find the primary key whose contents match the description of the network card you want to modify, such as "0000".

2. Add a string named "NetworkAddress" under the primary key mentioned above, set its value to the MAC address you want, and write it as "00101065438" continuously.

3. Then add a key value "Network Address" in "NDI \ Parameters" under the primary key, and add a string named "Default" under the primary key. Write down the value of the MAC address to be set continuously, such as "0010101065438".

Note that this is actually just the "initial value" set in the advanced properties mentioned later. The actual MAC address still depends on the "NetworkAddress" parameter mentioned in point 2. Once set, the value in the advanced attribute will be given by "NetworkAddress" instead of "default".

4. Continue to add a string named "ParamDesc" under the primary key of "NetworkAddress" to specify the description of the primary key of "NetworkAddress", and its value can be "MAC Address" (it can also be set at will, just a description, it doesn't matter, this value will appear as a description when modifying the MAC address directly in the future). In this way, after restarting once, open the properties of my online neighbors, double-click the corresponding NetworkAddress entry, and find that there is an advanced setting with the option of MAC address (that is, the ParamDesc you set before, as shown in the figure (290411)1), which is a new entry you added to the registry in the second step.

5. Close the Registry Editor and restart it. Your network card address has been changed. Open the Network Neighborhood properties, double-click the corresponding network card item, and find the advanced setting item of MAC address. Used to directly modify the MAC address, you can change the MAC at any time without restarting.

Under WinXP

Most network cards can change their MAC addresses by modifying the network card properties in the control panel. In Device Manager, right-click the icon of the network card whose MAC address needs to be modified, and then select Properties/Advanced tab. In the "Properties" area, you can see an item named "Network Address" or other similar names. Click it and enter the MAC address value you want to specify under Value on the right. To enter 12 hexadecimal digits or letters continuously, do not enter "-"in the middle.

There are also several softwares that can modify the MAC, all of which can run under XP/W2K. You can search online, so I won't introduce it in detail here.

Under linux

You need to disable the network card with #ifconfig eth0 down first, and then use ifconfig eth0hweether1234567890ab to change it successfully.

If you want to change it permanently, add these three sentences to /etc/rc.d/rc.local (or add the following three lines to /etc/init.d/network).

Ifconfig eth0 is closed.

Ifconfig eth0 Hardware Ethernet 1234567890ab

Ifconfig eth0 or above

If you want to restore the MAC address of the network card to its original state, just select the radio on the right side of the "network address" item as "Don't show" below and restart. Under WIN2000, you can choose "does not exist", of course, there is no need to restart.

Second, through SNMP (Simple Network Management Protocol), multiple computers are found to enjoy surfing the Internet. Some routers and ADSL cats have built-in SNMP services. After scanning with scanning software (ipscan, superscan), it is found that the port 16 1 is open, and the port 16 1 is the service port of SNMP (Simple Network Management Protocol). Is it because there are a large number of hosts discovered through SNMP protocol that xscan is used to scan cat vulnerabilities? Sure enough, I have a default password and log in to the management interface of the cat, but I can't find a place to close the SNMP service. It seems to be a back door. I can basically tell the number of hosts discovered through SNMP protocol. For further confirmation, use SNMP management software ActiveSNMP to check the connection of ADSL cats. As shown in Figure 2, it can be clearly seen that the number of hosts surfing the Internet at the same time can be found through SNMP protocol.

Solution:

1. If the cat can turn off the SNMP protocol, just disable the SNMP port 16 1. Friends who use routers or open ADSL cat routing mode can enter the management interface and turn it off with the option of turning off SNMP. If there is no option to turn off SNMP in the management interface of the cat, you have to buy a router without SNMP service, such as TP-LINK TL-R400, and put it between adsl moden and hub, as shown in the following figure. Do a NAT service in this router, so that the address of the cat entering ADSL is an address, thus solving the problem of * * * enjoying the Internet. Please note that the SNMP protocol should be turned off in the router.

2. Modify the configuration file. You can convert the configuration into a file, modify the default password with binary editing tools, and then load it into cat. This is just an idea that has not been tried yet.

3. Monitor the number of concurrent ports. If the number of concurrent ports exceeds the set number, it is judged as * * * enjoyment.

This is a setting that makes people laugh and cry. Network Guardian will continuously scan the number of ports opened by users. If it exceeds the set value, it is judged as * * * enjoyment. Sometimes even pressing F5 several times is considered as * * * enjoyment, and even affects a single user's surfing the Internet. This can't be cracked (unless you hack cyber guards). The solution here is to pretend that innocent users call ISP's customer service phone and curse, stating that it may not work.

Fourth, the "network guardian" also used an unknown method to detect the information enjoyed by * * * from the computer. The current solution is that all clients enjoyed by * * * should install firewalls and set the security level to the highest level. Due to the limited conditions, I only tried a few firewalls, and I found Kingsoft Internet Dart V(/Soft_Show.asp? SoftID= 10) is useful. All the IP configuration rules that allow others to access this machine are not allowed, and PING this machine is not allowed, so as to prevent ICMP and IGMP attacks. If it is WINXP, open the network firewall of the network card.

After adopting the above cracking method, I can't see this machine in my own LAN, and after WINXP opened the network firewall of the network card, I couldn't transfer files in QQ, and the network speed slowed down, but I can finally enjoy it again. If there is a good method, please tell us.