C # Use HttpWebRequest to simulate a fake IP address to forge an ip address,
Some people may say that IP address verification is completed at the TCP layer, rather than at the HTTP laye
This article mainly introduces the PHP curl fake IP address and header information code example, this article gives the server and client implementation code, to provide forgery and server-side detection code, need friends can refer to the
Although Curl is powerful, but can only forge $_server["Http_x_forwarded_for"], for most
Install plug-in: first open Firefox browser + find the downloaded MODIFY_HEADERS.XPI plug-in file and mouse down the plugin file, drag and drop to Firefox browser interface and restart the browser as prompted to complete the installation.In the top right corner of the browser, click the Small icon, and select Open Modifyheaders as shown in.Select add→ input x-forwarded-for→ custom IP address → point add but
If a site is through the following code to obtain IP, then we simply set in the header Http_via and x_forwarded_for, you can achieve the purpose of fake IP
in the network card a random search: asp.net client IPMany pages can be searched, and the code provided is basically similar to the following:
Copy Code code as follows:
if (request.servervariables["Http_via"
in the network card a random search: asp.net client IP
Many pages can be searched, and the code provided is basically similar to the following:
Copy Code code as follows:
if (request.servervariables["Http_via"]!= null)
return request.servervariables["Http_x_forwarded_for"]. Split (new char[] {', '}) [0];
Else
return request.servervariables["REMOTE_ADDR"];
The Http_via and http_x_forwarded_for in the above code are obtained from the h
"Faulty appearance" false source address attack, Hacker machine sends a lot of fake source address TCP SYN message to the victim host, occupy the NAT session resource of Security gateway, occupy the NAT session table of the security gateway Finally, incur all people in the LAN to be unable to on-line.
"Rapid Search" in the Webuià system Ànat Computing Ànat situa
of its own shortcomings. The IP protocol sends IP data packets based on the destination address in the IP header. If the destination address is an address in the local network, the IP
General access control is mainly set up in the firewall, the establishment of some security policies: such as the internal LAN resources do not allow the external users of the network; the undefended area (also known as the demilitarized Zone) can be used for internal or external local area networks, where resources are allowed to be limited to users of the extranet. ; You can enable external users to access the Web servers in the Demilitarized zone (DMZ area), and so on. In-depth analysis of th
General access control is mainly set up in the firewall, the establishment of some security policies: such as the internal LAN resources do not allow the external users of the network; the undefended area (also known as the demilitarized Zone) can be used for internal or external local area networks, where resources are allowed to be limited to users of the extranet. ; You can enable external users to access the Web servers in the Demilitarized zone (DMZ area), and so on.
In-depth analysis of th
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Ip address processed by code
Confuse You
------ Solution --------------------
This is not an ipv6 address, and the ipv6 address is an 8-segment address, for example, XXXX: XXXX
Therefore, the 611.661.82.1689 address
, 203.98.182.163, 203.129.72.215, however, it is revealed to the access object that the client uses the proxy server to access them.IV. destorting ProxiesREMOTE_ADDR = proxy server protocol = random IP address (when multiple proxy servers are used, this value is similar to: 220.4.251.159, 203.98.1820.3, 203.129.72.215). In this case, the client uses the proxy server, however, a
() function:Returns the Internet Protocol (IP) address of the client or last proxy that sent the request.In fact, REMOTE_ADDR is the IP of the client when it "shakes" with the server, but if "anonymous proxy" is used, REMOTE_ADDR will display the IP of the proxy server or the IP
illegal use of IP address is not a common technical problem, but a management problem. Only by finding out the reason for its existence, and eradicating its existence, can it fundamentally prevent its occurrence. An analysis of the motives of illegal users is as follows:
A. Disrupt and disrupt the normal operation of network servers and network devices.
B. The privilege of attempting to possess an
ServerHttp_via = Proxy Server IP AddressHttp_x_forwarded_for = Proxy Server IP address. When multiple proxy servers are used, this value is similar to the following: 203.98.1820.3, 203.98.1820.3, 203.129.72.215.
Your real IP address is hidden, but you are disclosed to the a
this provide a good IP address change solution for the "fake ticket" friends? haha.
Result:
HTTP/1.1 200 OK Date: Wed, 03 Apr 2013 06:20:42 GMT Server: Apache/2.2.22 (Win32) PHP/5.3.13
X-Powered-By: PHP/5.3.13 Content-Length: 44 Content-Type: text/html
IP: 8.8.8.8
Referer: http://www.phpfensi.com/
The foll
I found from the csdn, feeling very useful, I picked up **************At present, the so-called "take Real IP Address" method, there are bugs, do not take into account the situation of multi-layer transparent agent.Most of the code is similar:String IpAddress = (httpcontext.current.request.servervariables["Http_x_forwarded_for"]!=null httpcontext.current.request.servervariables["Http_x_forwarded_for"]!=stri
the Header to hide the client IP, provided that X_FORWARDED_FOR is enabled on the server.
Test results: Create a PHP program on the server.
Example code 1: The code is as follows:
Example code 2: php code:
Forged successfully. does this provide a good IP address change solution for "fake tickets"? haha.
Result:
affect TCP traffic. That is to say, the client can actually send any http_x_forwarded_for of content to fake IP. The simplest is the IP record of the Web program, which is to record the real IP, but was "hacker" deception. When your application logs clients ' access to IP,
Analysis processThis comes from a number of projects that capture User IP and conduct user action records that are common and often used. General friends, you will see the following universal Get IP address method.
Copy Code code as follows:
function GetIP () {
if (Isset ($_server[' http_x_forwarded_for ')) {
$realip = $_server[' http_x_forwa
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