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Detecting 'stealth' web-crawlers

...I developed examined web server logs for excessive activity from any given IP address and issued firewall rules to block offenders. It included whitelists of IP addresses/ranges based on http://www.iplists.com/, which were then updated automatically as needed by checking claimed user-agent strings ...
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What is /dev/null 2>&1?

... & indicates a file descriptor. There are usually 3 file descriptors - standard input, output, and error. – Testing123 Sep 15 '17 at 17:22 ...
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Nginx reverse proxy causing 504 Gateway Timeout

...ed just fine: server { location / { proxy_set_header X-Real-IP $remote_addr; proxy_set_header Host $http_host; proxy_http_version 1.1; proxy_set_header Connection ""; proxy_pass http://localhost:5000; } } Have a look at this posts which exp...
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phpcms与ucenter整合常见问题与解答 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...$member['password']; $email = $member['email']; $ip = $_SERVER['REMOTE_ADDR']; $time = time(); $userdata = array( 'uid'=>$uid, 'username'=>$username, 'password'=>$password, 'email'...
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Has anyone ever got a remote JMX JConsole to work?

...a SSH login. All Communication will be tunneled over the SSH connection. TIP: This Solution works no matter if there is a firewall or not. Disadvantage: Everytime you restart your java process, you will need to do all steps from 4 - 9 again. 1. You need the putty-suite for your Windows machin...
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GIT clone repo across local file system in windows

...gt;/<share>/<path> For example, if your main machine has the IP 192.168.10.51 and the computer name main, and it has a share named code which itself is a git repository, then both of the following commands should work equally: git clone file:////main/code git clone file:////192.168.10...
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推荐系统算法初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...权重如下: 基于模型的算法由于快速、准确,适用于实时性比较高的业务如新闻、广告等,而若是需要这种算法达到更好的效果,则需要人工干预反复的进行属性的组合和筛选,也就是常说的Feature Engineering。而由于新闻的时...
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Django's SuspiciousOperation Invalid HTTP_HOST header

... a more likely explanation is web crawlers (robots) simply crawling public IP addresses on port 80 - in which case you would want to allow them. – markmnl May 16 '14 at 4:12 16 ...
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Test if string is a number in Ruby on Rails

...il 1154461.1 (±5.5%) i/s - 5788976 in 5.035311s require 'benchmark/ips' int = '220000' bad_int = '22.to.2' Benchmark.ips do |x| x.report('cast') do Integer(int) rescue false end x.report('cast fail') do Integer(bad_int) rescue false end x.report('to_s') do int.to_i....
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Why must a lambda expression be cast when supplied as a plain Delegate parameter

...keRequired code pattern are very helpful. – Erik Philips Jan 9 '13 at 1:12 ...