uploaded file, which makes it impossible to forge the $ _ FILES variable, because the script will terminate execution when checking that $ _ FILES ['file'] ['tmp _ name'] is not uploaded by PHP.
Is forging impossible? In many scripts, I can see operations such as @ extract ($ _ POST) in the preliminary test to ensure that the program can continue to run in the environment where register globals is off, in such an environment, we can easily
Pair
In earlier PHP versions, file uploading may be implemented through the following code:
......
If (isset ($ _ FILES ['file']) {
$ Tmp_name = $ _ FILES ['file'] ['tmp _ name'];
}
If (file_exists ($ tmp_name )){
Copy ($ tmp_name, $ destfile );
}
......
However, a $ _ FILES ['file'] array may be forged. If the content of tmp_name is specified as/etc/passwd and other sensitive information, so it is easy to have security problems. In later versions, PHP solved this problem with
and the request brain hole for forging 401 request identity verification: in fact, there has also been a "regular" search engine in China that does not comply with the robots protocol, in the case of crawling the disallow path, 19th set honeypot and forge the HTML annotation brain hole: hackers usually comment in the HTML code For sensitive information, Burpsuite provides the "findcomments" function. For example, add a nonexistent uri in the comment
cookies and sessions are used to track the user's identity in a browser.
The difference between the 4.cookie and session is that the cookie data is stored on the client and the session data is saved on the server side.Simply put, when you log in to a website,
· If the Web server side uses the session, then all the data is stored on the server, the client each time the server is requested to send the current session of the SessionID, the server according to the current SessionID to determine the
1. We all know that when you browse the website, the server of the other party will record your IP address. What if we forge an IP address as XSS code? Changing the IP address to XSS is not to modify the PC end, but to modify the IP address in the browser, that is, the client on the webpage.
2. Required
One in Firefox
One Firefox attachment X-forwarded-for header
Because PHP has three functions to obtain the IP address. X-forwarded-for header is used
crawler restrictions are more stringent, we need to put the browser headers field all add, and the reptile interval is larger, I set the 10-20s, and then the normal data can be obtained.Import requestsdef Get_json (URL, page, lang_name): headers = {' Host ': ' www.lagou.com ', ' Connection ': ' Ke Ep-alive ', ' content-length ': ' All ', ' Origin ': ' https://www.lagou.com ', ' x-anit-forge-code ': ' 0 ', ' User-agent ': ' mozilla/5.0 (Windows
" check, the anti-installation detection button opens. 2. Check the list of programs you want to brush the platform and ads. Select all, the search function supports initials, such as "cash cow" as long as the "Yqs" can be entered.3, will randomly forge, clean up the keychains, clean Safari, save forge behind the small dot lit, and then each point "one click Forge
collision, Professor Wangxiaoyun method to shorten the time to find collisions, is an important outcome." But she found is strong without collision, to be able to find a weak without collision, only real crack, only practical significance. ”
According to the definition of cryptography, if the contents of different plaintext, through hashing algorithm results (cryptography is called Information Digest) the same, it is called "collision." Hash algorithm is not used to encrypt plaintext, so that
users I also neglect management, free open source business can not have to have customer service to help you retrieve the password, right ...After careful analysis of the various COLUNM structures of the table (if you are newly installed, you can observe the information of Amdin this user), we found that if we want to create a new user, many fields are nullable, but in order to try not to affect the openfire itself, I decided to forge a timestamp and
Later checked some relevant data, found in IE through window.location.href or is not able to get http_referer, really do not understand IE browser, a lot of browsers run very good things, it is not supported, finally there is no way, PHP can only forge the source Http_referer method or use JS to forge.
IE can be identified by the Http_referer commit is triggered by the click of the event or form form submi
Conda env list or Conda info--envs Remove Virtual Environment Conda remove--name Spatial data Processing Python library installation common space data processing Python library
GDAL Universal Basic spatial Data Processing library Fiona spatial vector data processing base based on GDAL rasterio spatial Raster Processing library GDAL based on Basemap spatial mapping library Matplotlib Spatial data analysis base based on Pandas Rsgislib Advanced Library for Remote sensing data and GIS analysi
as follows:
The unknown user points to the "forward" button, and the money is turned away ...
To eliminate this situation, you need to add a field that cannot be forged by an attacker when not getting requests, and verify that the field has been modified when processing the request.Tornado's approach is simple, adding a randomly generated _xsrf field to the request, and adding the field to the cookie, comparing the values of the 2 fields when the request is received.Since non-site
How to turn off ICMP (Ping) in Win2000
The full name of ICMP is the Internet control and messaging protocal, the Internet-controlled message/error message protocol, which is used primarily for the transmission of error messages and control information. For example, the well-known ping and tracert tools are all made using the Echo request message in the ICMP Protocol (Request message ICMP echo type 8 code 0, reply packet icmp echoreply type 0 code 0).
ICMP protocol has a feature---it is not con
Interface Tools:Msql Workbench http://www.mysql.com/products/workbench sqlyog http://www.webyog.com phpMyAdmin http://sourcefor Ge.net/projects/phpmyadmin [Not recommended] adminer phpMyAdmin better alternatives, http://www.adminer.org[not recommended for public access]command-line toolset:Percona toolkit:mysql Administrator-required toolkit. Includes many tools for similar log analysis, replication integrity detection, data synchronization, schema and index distractions, query sugges
method does not set the cookie expiration time.
[3] The third Way is to add hidden fields in the page form, which is actually the same as the second way, except that the former sends the data by means of a GET, which uses post to send the data. But obviously the latter is more troublesome.
The difference between a cookie and a session:
The cookie data is stored on the client side and the session data is saved on the server.
Simply put, when you log on to a website, if the Web server side uses t
Phpcurl is too powerful. It not only imitates user logon, but also imitates user IP addresses. To forge IP sources, this instance is for reference only. Php curl is too powerful. It not only imitates user logon, but also imitates user IP addresses. To forge IP sources, this instance is for reference only.
Script ec (2); script
Curl sends the request file fake_ip.php:
Code
The Code is as follows:
. Three handshakes are triggered.
First handshake:The client sends a packet with tcp syn flag position 1, indicating the port of the server to which the customer intends to connect, and the initial serial Number X, which is saved in the Sequence Number field of the packet header.
The second handshake:The server sends back the ACK response. That is, the SYN flag and ACK flag are both 1, and the Acknowledgement Number is set to the customer's I S N plus 1 to. X + 1.
The third handshake.
shared secret between the KDC and sever, and if within the valid time, the request is valid0X08 about the Kerberos utilization method:1) Gold Bill (Golden Ticket)First of all, assuming such a situation, the original has been received in the domain of all the account hash, including krbtgt this account, due to some reasons caused by the loss of domain control, but fortunately you also have a normal domain user rights, it happens that the administrator in the domain when the reinforcement forgot
impersonation. Specific requirements: After the sender can not deny the message signature sent, the recipient can verify the sender's message signature, the recipient can not forge the sender's message signature, the recipient can not be part of the sender's message tampering, a user in the network can not impersonate another user as the sender or receiverSpecific options:Scenario one (MD5 encryption algorithm + key for signing):First in the data sen
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