Sometime on HackerNews, some people will drop some seriously niche information which are definetly worth keeping. Here is some
Yigor drop some real nice insider POV on DIY VPNs and related:
Yigor also happen to run a commercial VPN service (Windscribe) - which probably help.
There are 2 paths you can take here:
Roll your own VPN server on a VPS at a less common cloud provider and use it. If you’re tech savvy and know what you’re doing, you can get this going in <1hr. Be mindful of the downsides of being the sole user of your custom VPN server you pay for: cloud providers log all TCP flows and traffic correlation is trivial. You do something “bad”, your gov subpoenas the provider who hands over your personal info. If you used fake info, your TCP flows are still there, which means your ISP’s IP is logged, and deanonymizing you after that is a piece of cake (no court order needed in many countries).
Get a paid commercial VPN service that values your privacy, has a diverse network of endpoints and protocols. Do not use any random free VPN apps from the Play/App stores, as they’re either Chinese honeypots or total scams.
Do not go with a VPN service that is “mainstream” (advertised by a Youtuber) or one that has an affiliate program. Doing/having both of these things essentially requires a provider to resort so dishonest billing practices where your subscription renews at 2-5x of the original price. This is because VPNs that advertise or run affiliate programs don’t make a profit on the initial purchase for that amazing deal thats 27 months with 4 months free or whatever the random numbers are, they pay all of this to an affiliate, sometimes more. Since commercial VPNs are not charities, they need ROI and that comes only when someone rebills. Since many people cancel their subscriptions immediately after purchase (to avoid the thing that follows) the rebill price is usually significantly more than the initial “amazing deal”. This is why both Nord and Express have multiple class action lawsuits for dishonest billing practices - they have to do it, to get their bag (back). It’s a race to the bottom of who can offer the most $ to affiliates, and shaft their customers as the inevitable result.
Billing quirks aside, a VPN you choose should offer multiple VPN protocols, and obfuscation techniques. There is no 1 magic protocol that just works everywhere, as every country does censorship differently, using different tools.
Some do basic DNS filtering, in which case you don’t need a VPN at all, just use an encrypted DNS protocol like DOH, from any provider (Cloudflare, Google, Control D[I also run this company], NextDNS, Adguard DNS)
Then there is SNI filtering, where changing your DNS provider won’t have any effect and you will have to use a VPN or a secure proxy (HTTPS forward proxy, or something fancier like shadowsocks or v2ray).
Finally there is full protocol aware DPI that can be implemented with various degrees of aggressiveness that will perform all kinds of unholy traffic inspection on all TCP and UDP flows, for some or all IP subnets.
For this last type, having a variety of protocols and endpoints you can connect to is what’s gonna define your chance of success to bypass restrictions. Beyond variety of protocols, some VPN providers (like Windscribe, and Mullvad) will mess with packets in order to bypass DPI engines, which works with variable degree of success and is very region/ISP specific. You can learn about some of these concepts in this very handy project: https://github.com/ValdikSS/GoodbyeDPI (we borrow some concepts from here, and have a few of our own).
Soooo… what are good VPNs that don’t do shady stuff, keeps your privacy in mind, have a reasonably sized server footprint and have features that go beyond basic traffic proxying? There is IVPN, Mullvad, and maybe even Windscribe. All are audited, have open source clients and in case of Windscribe, also court proven to keep no logs (ask me about that 1 time I got criminally charged in Greece for actions of a Windscribe user).