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Evading IP lock of proxy services Price: $0.00

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There are many services that provide an outsized quantity of proxies that you just can use when scraping websites to avoid getting timed out. But what if you wish to shop for one proxy package and use it from multiple computers on different networks? Types of security The main kinds of security that proxy services use so as to avoid abuse of their system are: Username and password authentication IP whitelisting (1 or more) Maximum number of threads or any combination of those three. While the primary is straightforward to bypass (just use the identical username and password on all of your devices), the opposite two may be complex to figure around. Although for the latter there's probably no solution, we are able to find some way to evade the IP whitelisting security. i'll not reveal which services are liable to the workarounds I’m visiting illustrate for obvious reasons. The “easy” way The easiest way is to use a VPN. The VPN will change the IP address that the proxy service sees after you send a HTTP request to at least one of their proxies, so you'll simply bind the service to the VPN host IP and connect all of your devices to it same host with a VPN tunnel. Doing this freed from charge, though, will be difficult. OpenVPN, which may be self-hosted, only allows for up to 2 users to attach to your VPN if you don’t buy a license Paid VPN services hosted on 3rd party servers will offer you a spread of IPs to decide on from, but you wish a static IP so you would like to attach to the identical server each time Finally you'll host an open source VPN The hacky way Since I wasn’t pleased with the answer above, I started investigating on the way to make a two-step proxy which will take all incoming traffic from all my devices and send it to at least one of the proxies of the provider, making it seem like it came from that IP alone. I started investigating a node.js solution and located the proxy-chain module, which sounded very appealing initially, but after I tested it with around 1000 proxies it performed very badly. Finally I started thinking that I could simply use nginx and make it redirect all incoming traffic to the addresses I specify. this method works as good as, and after testing it for a few days I feel confident to mention that it’s a good zero-cost solution to the matter (provided that you just can host a linux server of course). First of all we would like to put in nginx. I opt to use the mainline branch rather than the stable because it offers more features. you'll find instructions HERE. Then add the nginx user useradd nginx After that we want to edit the configuration file (check out where it’s located on your installation) vi /var/nginx/nginx.conf then delete all the content using :1,$d paste this configuration load_module /usr/lib/nginx/modules/ngx_stream_module.so; worker_rlimit_nofile 65536; user nginx; worker_processes 1; error_log /var/log/nginx/error.log warn; pid /var/run/nginx.pid; events http include /etc/nginx/tcpconf.d/*; and finally save and quit. This configuration will load the stream module, which is what we'd like to require the incoming TCP stream on an area port and redirect it to a different host on its port. We also specify a high limit for the quantity of workers since we'd like to form sure nginx can work on enough files at the identical time. It’s also important to note that the worker limit MUST be an influence of two or it'll be disregarded! Yeah, that costed me almost an hour of debugging… We should check if the file limits for the nginx user are high enough or if we must always increase them. To test it, you'll be able to type su - nginx ulimit -Hn ulimit -Sn If the bounds are too low, you'll be able to edit this file vi /etc/sysctl.conf and append this line fs.file-max = 70000 After saving and shutting, edit this other file vi /etc/security/limits.conf and add these two lines nginx soft nofile 10000 nginx hard nofile 30000 Make sure to use tabs rather than spaces because the latter can cause issues to some people. Finally, edit the file vi /etc/pam.d/common-session and append this line session required pam_limits.so Now that we edited all the specified files, we are able to reload the sysctl process and nginx (although killing the nginx would be a much better thanks to ensure it reloads entirely) sysctl -p nginx -s reload We’re almost good to go! We just need some more steps. First of all, create a folder called tcpconf.d inside your nginx root folder (where the nginx.conf file is) mkdir tcpconf.d cd tcpconf.d Inside this folder we'd like to form a file with this syntax (you can provides it any name you want) stream server } You should be ready to generate this file pretty easily by using this python script that I wrote for the occasion output = open('output.txt', 'w+') p = open('proxies.txt', 'r') proxies = p.read().splitlines() p.close() output.write('stream\n' % (i, proxy)) i += 1 output.write('}\n') output.close() This script will take your proxy list within the format of 1 proxy per line (e.g. 12.34.56.78:8080) and generate a file called output.txt that's able to be placed inside the tcpconf.d folder. By default this script will use the ports from 30000 onwards, so if you would like to use other ports you'll edit that value but don't choose a coffee value since many of the ports are reserved for other processes (like SSH on port 22) and can offer you errors after you start nginx. Finally we want to come up with a proxy list that we are able to use in our favourite scraping software (like OpenBullet for example). Run this python script output = open('output.txt', 'w+') ip = 'YOUR_SERVER_IP' for i in range(30000, 55000): output.write('%s:%d\r\n' % (ip, i)) output.close() You have to exchange your own IP and define your port range basing on what number proxies you used (I had 25000 so I needed to output 25000 ports ranging from port 30000, which is that the beginning of the default port range of the previous script). Finally, it’s vital that you simply import these proxies as SOCKS5 or they're going to not work, since we’re redirecting TCP streams and not HTTP requests (they are on two different layers of the protocol stack). Congratulations, we are officially done and that we can finally start nginx service nginx start If you've got an outsized amount of proxies this might take it slow, but if you patiently wait you ought to have your middle proxies visible on all the incoming ports, able to accept some traffic! Conclusion This was a good learning experience as i attempted to use nginx for something I didn’t are aware of it could do, by using the stream module which is optional and desires to be activated with a directive within the configuration file. I also learned how linux handles the most open files allowed for every process and messed around with various configuration files so as to urge it to figure. Next time i'll try one in all the open source VPN solutions and report my findings on this blog. I am very happy with what I achieved during all now, and that i am pleased with my choice of creating OpenBullet an open source software with a really permissive license. Although the journey was really fun, the tech debt have to be compelled to a degree where OpenBullet 1 felt sort of a house of cards, or rather, sort of a puzzle: many components glued together in weird ways. This was mostly thanks to the very fact that i used to be still developing my programming skills, so I used OpenBullet as my playground to do out the maximum amount stuff as I wanted, often with disregard to good OOP practices, nonsensical mutual dependencies and no clear architecture to be seen. Updating even the littlest component was a really painful experience. Whenever I wanted to feature a brand new setting to a block, I had to manually fix the LoliScript parser and writer to account for this variation, while ensuring that configs created with the previous versions wouldn't break. Moreover, while I had to be told it because it absolutely was just about the sole good option for Desktop UI development with .NET, I never liked XAML and that i always felt prefer it would are great to be able to use my existing frontend skills (HTML and CSS) to create decent-looking and responsive interfaces. Finally, the very fact that OpenBullet 1 has always been platform-specific prevented many of us from using it, and as a Linux user I also found myself having to jot down some python scripts from scratch just to scrape a webpage once I had a totally featured killing machine on the opposite system that I already built for this exact purpose. The idea One day, while i used to be staring at some new tools from the Microsoft team that's guilty of .NET (formerly .NET core), the word Blazor jumped to my eye. A full-stack cross-platform framework to make websites without the necessity to put in writing any JavaScript? Could that be real? I started messing with it and it had been love initially sight. That very moment, I knew this was the tool i might want to figure with within the future. it'd not are production-ready for an enterprise platform since there have been only one or two of able to use components and still many bugs to resolve, but it absolutely was ready enough for what I wanted to create. So in April 2020, after the primary anniversary of OpenBullet, I need to work. i made a decision to prevent all updates to OpenBullet 1 and concentrate on something new, something that may make me desire a child again, discovering all the secrets of a replacement toy on Xmas. i used to be hooked. once I realized that a second, completely redesigned version of OpenBullet was possible using this technology, I knew this was what I wanted to try to to in my free time for the remainder of the year. Yes, sometimes exams returned the way and stalled the pace of development, as I’m the sole coder currently involved within the project, but I never gave up, even when things were looking grim, and OpenBullet 2 is now ready for Beta stage. I can safely say that I don’t regret anything this decision, and I’m really glad that I embarked onto this new journey because I picked up many new skills which will help me in my normal developer job likewise (like getting at home with entity framework or with the authentication, authorization and localization middlewares). The future I don’t know what is going to be of OpenBullet once i'll finish my studies, which are now near their end. immediately I cannot tell if i'll still have time to update OpenBullet 2 in my spare time or if i'll be too busy with other things. I don’t even know if people will actually prefer using it over the previous version, since it's a really different approach and will not be easy for everybody to find out. I only know that I enjoyed almost every moment of developing it, watching it grow bigger and greater, and that i now have a finished project at which I can point my finger and say “I made that”. 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