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Tunnl.gg
- hugoromano 10mo agoLove the approach, simplicity and concept. SPA works fine if entry point is / if /terms /privacy greated with 404.
- klipitkas 10mo agoHey, thanks for the comment. I am having a look with my own apps and it seems to work with pages and nextjs middleware as well.
- ZuzuDuck 9mo agoI like this idea, maybe I'll use it in my next project
- klipitkas 10mo agoBuilt another localhost tunneling tool because I kept forgetting my ngrok auth token. What it does: - Expose localhost to the internet (HTTP/TCP/WebSockets) - Zero signup – just works immediately - Free Nothing groundbreaking, just scratching my own itch for a no-friction tunnel service. Written in Go. Link: https://tunnl.gg https://tunnl.gg Happy to answer questions or hear how you'd improve it.
- koolala 10mo agoSince it uses websockets you could host a website from inside a website? How will you handle pricing for this to keep the service running?
- klipitkas 10mo agoThere is a maximum time limit for connections right now which is 24hr or 30min of inactivity.
- koolala 10mo agoCould a cacheing service let static sites be cached when offline? I'm not sure if caching sub-domains like this would work but if its a tiny fee to cache maybe that could be a paid feature if your designing those. Like $1 per month could give you a static domain and XX monthly cache updates? As opposed to uploading somewhere like Github Codespaces or a Cloud-Flare service. Direct real-time connections could be a path like nl.gg/# or a private key that someone could change. Some way to have a public site thats hosted globally for 'nearly free' while also being able to locally host a private url to the dev version for sharing temporarily while your connected. Maybe even a totally different domain.
- canopi 10mo agoThat's really cool. I guess this is an alternative to ngrok (which I like but hate due to having to sign in).
- klipitkas 10mo agoYes, its free to use and does not require any clients (but you need to have ssh client installed)
- keepamovin 10mo agoNot many people know that you can use cloudflare tunnels without signing up.
- frizlab 10mo agoI sure did not! How would that work? Manually pointing the domain as a CNAME to the tunnel ID? But how would one get that ID without signing up?
- keepamovin 10mo agoI have a demo with working GitHub runner workflow code here: https://github.com/BrowserBox/ariadne https://github.com/BrowserBox/ariadne Specifically: https://github.com/BrowserBox/ariadne/blob/f07e3b0d445f5d4a89bdd7485e936a0843ca2700/.github/workflows/tunnel-sandbox.yml#L227 https://github.com/BrowserBox/ariadne/blob/f07e3b0d445f5d4a8...
- kilobaud 10mo agoHey if you are interested in re-using any of this GitHub Action, feel free to: https://github.com/LocalXpose/localxpose-action https://github.com/LocalXpose/localxpose-action
- keepamovin 10mo agoThank you bud, was not aware of local expose. There’s a bunch of these tunneling services out there, what makes yours uniquely cool?
- rany_ 10mo agoThis is a great idea but I'm a bit concerned about your bandwidth costs and illegal/malicious content being hosted used under your domain. For the second point, you might want to implement some kind of browser warning similar to what Ngrok does.
- klipitkas 10mo agoThats a fair point, there are some protections in place for abuse already. I will have a look at what ngrok does for browser warnings. Thanks a lot for the suggestions.
- gnfargbl 10mo agoBe aware of threat actors, too: you're giving them an easy data exfil route without the hassle and risk of them having to set up their own infrastructure. Back in the day you could have stood up something like this and worried about abuse later. Unfortunately, now, a decent proportion early users of services like this do tend to be those looking to misuse it.
- skrebbel 10mo agoWhat's a "data exfil route"?
- lionkor 10mo agoI'm not who you asked, but essentially, when you write malware that infects someone's PC, that in itself doesn't really help you much. You usually want to get out passwords and other data that you might have stolen. This is where an exfil (exfiltration) route is needed. You could just send the data to a server you own, but you have to make sure that there are fallbacks once that one gets taken down. You also need to ensure that your exfiltration won't be noticed by a firewall and blocked. Hosting a server locally, easily, on the infected PC, that can expose data under a specific address is (to my understanding) the holy grail of exfiltration; you just connect to it and it gives you the data, instead of having to worry much about hosting your own infrastructure.
- rishikeshs 10mo agoHow are you able to host it for free?
- klipitkas 10mo agoI am paying for it out of pocket. Its free for you to use, but not for me to host it :)
- shadows1 10mo agoGood luck with your future mim data sniffing or selective takeovers, I guess? Not sure what the business model would be, unless you’re planning on injecting ads, which would be funny.
- hashworks 10mo agoWhy does everything have to be a business model?
- Fokamul 10mo ago...", Russian FSB manager, 2025
- charlie-83 10mo agoUnless the author is insanely rich, they probably don't want to spend increasingly large amounts on hosting unless they have a way to make money back (even if it's just to break even).
- klipitkas 10mo agoI am not rich and I don't need to be to keep this service up and running at least for the near future.
- pcthrowaway 10mo ago
- stevekemp 10mo agoIf you keep this up you'll want to add yourself to the public suffix list: https://publicsuffix.org/ https://publicsuffix.org/ You should also consider grouping your random hostnames under a dedicated subdomain. e.g. "xxx-xxx-xxx.users.tunnl.gg", that separates out cookies and suchlike.
- qudat 10mo agoI run a similar site (https://pico.sh https://pico.sh) with public urls and thought the same thing for us. The public suffix has some fuzzy limits on usage size before they will add domains (e.g. on the scale of thousands of active users). I don’t have tunnl.gg usage numbers but I’m going to guess they are no where near the threshold — we were also rejected.
- ramon156 10mo agoHow does this compare to cloudflare or even a self-hosted tailscale tunnel? Also do you collect any data? Privacy says > We do not collect, store, or sell your personal data. But I guess personal data is a bit ambiguous. You're at the very least collecting my IP (which is fine, I'm just curious)
- klipitkas 10mo agoYes that is true (the IP is collected), what I meant is that we don't explicitly collect data on purpose.
- computer 10mo agoYou are mentioning it's encrypted end-to-end; please explain how your server is unable to read the contents of the stream?
- klipitkas 10mo agoThat is wrong (and I need to update any docs that mention this), the traffic is not encrypted end to end, we do TLS termination on our side. From that point on traffic is forwarded back as plain HTTP. However I would in any case not suggest to host any production applications using this service. It is mostly for local dev testing.
- Fokamul 10mo agoWhy not just buy trial or cheap VM? Are devs that lazy now? Or is this aimed on vibe "devs"? :D
- Zambyte 10mo agoTo some people (students, people in low income countries) there are no cheap hosted VMs.
- klipitkas 10mo agoAgreed and even devs who have the money, most of the times don't have the time.
- klipitkas 10mo agoIt's not my target audience. Also as a dev I hate spending more than a couple of seconds to do this. This service exists mainly to scratch my own itch.
- szemy2 10mo agoHow is it different to ngrok? Genuinely curious, I might switch.
- klipitkas 10mo agoNot really that different, besides any kind of time limitations or number of request limitations.
- BinaryIgor 10mo agoInteresting! How do you handle port conflicts? What ports for public exposure are available?
- ritcgab 10mo agoCurious about this as well.
- klipitkas 10mo agoOn the VPS we use: - 80 (standard http) - 443 (standard https) - 22 (obv for standard ssh) - 9090 (metrics / internal so I can have an idea of the generic usage like reqs/s and active connections) Client-Side: The -R 80:localhost:8080 Explained The 80 in -R 80:localhost:8080 is not a real port on the server. It's a virtual bind port that tells the SSH client what port to "pretend" it's listening on. No port conflicts - The server doesn't actually bind to port 80 per tunnel. Each tunnel gets an internal listener on 127.0.0.1:random (ephemeral port). The 80 is just metadata passed in the SSH forwarded-tcpip channel. All public traffic comes through single port 443 (HTTPS), routed by subdomain. So What Ports Are "Available" to Users? Any port - because it doesn't matter! Users can specify any port in -R: ssh -t -R 80:localhost:3000 proxy.tunnl.gg # Works ssh -t -R 8080:localhost:3000 proxy.tunnl.gg # Also works ssh -t -R 3000:localhost:3000 proxy.tunnl.gg # Also works ssh -t -R 1:localhost:3000 proxy.tunnl.gg # Even this works! The number is just passed to the SSH client so it knows which forwarded-tcpip requests to accept. The actual routing is done by subdomain, not port. Why Use 80 Convention? It's just convention - many SSH clients expect port 80 for HTTP forwarding. But functionally, any number works because: - Server extracts BindPort from the SSH request - Stores it in the tunnel struct - Sends it back in forwarded-tcpip channel payload - Client matches on this to forward to correct local port - The "magic" is that all 1000 possible tunnels share the same public ports (22, 80, 443) and are differentiated by subdomain.
- BinaryIgor 10mo agoNicely done! Thanks for the detailed answer ;)
- bashy 10mo agoShell function; ``` tunnl() { if [ -z "$1" ]; then echo "Usage: tunnl <local-port>" return 1 fi ssh -t -R 80:localhost:"$1" proxy.tunnl.gg } ``` There's also https://tunnelmole.com https://tunnelmole.com but requires binary or npm install
- madethemcry 10mo agoI used ngrok when it was the to-go answer for serving localhost (temporarily, not permanent) to the public, but the last time I searched for alternatives I stumbled upon the following jewel. > tailscale funnel 3000 Available on the internet: https://some-device-name.tail12345.ts.net/ |-- proxy http://127.0.0.1:3000 Press Ctrl+C to exit. I've tailscale installed on my machine anyway for some connected devices. But even without this would convince me using it, because it's part of the free tier, dead simple and with tailscale it's coming from kind of a trusted entity.
- klipitkas 10mo agoI am also using tailscale for a few projects as well. Feel free to use whatever you trust more or works for you.
- madethemcry 10mo agoHey, I didn't mean to sell another tool over yours! It's just an experience that popped into my mind and I wanted to share. I appreciate your work and contributing to the problem space of exposing a local service. Thank you.
- bomewish 10mo agoHey really recommend using a big long random string in that URL, because as you will have read above TAILNET NAMES ARE PUBLIC. You can find them here: https://crt.sh/?Identity=ts.net https://crt.sh/?Identity=ts.net [warning, this will probably crash browser if you leave it open too long -- but you can see it's full of tailnet domains]. So anyway try it like: tailscale funnel --set-path=/A8200B0F-6E0E-4FE2-9135-8A440DB9469D http://127.0.0.1:8001 http://127.0.0.1:8001 or whatever I use uuidgen and voila.
- ftchd 10mo agoso what exactly does this do?
- 9mo ago
- tarasyarema 10mo agoIs this any different from localtunnel? Nice thing about that one is that its oss, actually we forked it in my company to do some more custom stuff. Any plan to make it oss? https://github.com/desplega-ai/localtunnel-server https://github.com/desplega-ai/localtunnel-server
- klipitkas 10mo agoI am actually thinking about making it open source yes, probably after I adjust the code a little bit :D maybe today or in a couple of days.
- tambre 10mo agoSeemingly lacking IPv6 support? Not that you'd usually need this if you have IPv6 but might still be useful to bypass firewalls or forward access for IPv4 clients from your newer IPv6-only resources.
- klipitkas 10mo agoIndeed there is no IPv6 support yet.
- oliviergg 10mo agoIt's bit less convenient, but I have access to a vps and a dns with a custom domain. I can create any subdomain I want and tunnel the connexion to any port on my computer. => I can spinup a new subdomain in seconds, no data leakage, url that doesn't change, and it's cost nothing.
- klipitkas 10mo agoWhatever works for you best :)
- gnyman 10mo agoThis is nice and for those who's asking, it's different from ngrok and the others in that you don't need a separate client, (almost) everyone has ssh installed. To the author, I wish you best of luck with this but be aware (if you aren't) this will attract all kind of bad and malicious users who want nothing more than a "clean" IP to funnel their badness through. serveo.net [2] tried it 8 years ago, but when I wanted to use it I at some point I found it was no longer working, as I remember the author said there was too much abuse for him to maintain it as a free service I ended up self-hosting sish https://docs.ssi.sh https://docs.ssi.sh instead. Even the the ones where you have to register like cloudflare tunnels and ngrok are full of malware, which is not a risk to you as a user but means they are often blocked. Also a little rant, tailscale has their own one also called funnel. It has the benefit of being end-to-end encrypted (in theory) but the downside that you are announcing your service to the world through the certificate transparency logs. So your little dev project will have bots hammering on it (and trying to take your .git folder) within seconds from you activating the funnel. So make sure your little project is ready for the internet with auth and has nothing sensitive at guessable paths. [2] https://news.ycombinator.com/item?id=14842951 https://news.ycombinator.com/item?id=14842951
- resiros 10mo agoIt would be nice to have an open-source version that you can self-host. That would solve the abuse problem. Maybe with a service to create API keys.
- klipitkas 10mo agoYeah, this is the next step. I first wanted to understand if this gets any traction. I think I will provide a dockerized version for the server part that you can just run with a simple command and maybe some interface to create api keys and distribute them to your users.
- popalchemist 10mo agoFair enough from a business standpoint, but seeing as there are massive privacy/security risks involved in exposing your data to an opaque service, the open source component is probably a non-optional aspect of the value prop.
- rollingstone23 10mo agoI have used serveo.net in the past for the same use case, this looks cool !
- 1vuio0pswjnm7 10mo ago"We cooperate with law enforcement agencies when required by law. While we do not inspect traffic content, we will provide connection logs and IP address information in response to valid legal process (such as a subpoena or court order) to assist in investigations regarding illegal activity." https://tunnl.gg/assets/index-Bjpn0hFX.js https://tunnl.gg/assets/index-Bjpn0hFX.js If the requesting party knows it's possible they might ask for traffic to be logged
- klipitkas 10mo agoI can also deny, if I don't consider the case valid or shutdown the hosted service if I want to. I plan to open source it anyway within the next days.
- gaws 10mo ago> I can also deny if I don't consider the case valid It wouldn't take much for law enforcement or a judge to force cooperation.
- cush 10mo agoHow do the Certs work for https?
- watermelon0 10mo agoI'd assume it uses a single wildcard certificate.
- klipitkas 10mo agoYes, thats exactly how it works for the multiple subdomains.
- FrinkleFrankle 10mo agoIf you want to do this another way, Tailscale funnel can send public traffic into your tailnet Traefik supports pulling the Tailscale cert from its socket.
- raggi 10mo agoPeriodic reminder that just because Go having an easy to use SSH package made these easy to write, connecting to SSH servers and doing TOFU all the time with the keys is far far less safe than webpki, and this service could be relatively easily mitm'd in key scenarios like people being tricked at conferences. It's not as terrifying as the coffee shop taking payments over SSH, but still, this isn't doing E2EE, it's terminating TLS upstream. There's no SSHFP record (not that openssh uses it by default, and you'd need DNSSEC to make it actually useful), and no public keys documented anywhere to help people avoid MITM/TOFU events. I get the UX, but it saddens me to see more SSH products that don't understand the SSH security model.
- fuzzy_biscuit 10mo agoI love the concept, but I have one gripe: the subscription email is coming from a Gmail address, so I have no trust. I'd love to see it coming from the same domain. Also, it went to spam.
- klipitkas 10mo agoHey, I updated this to be a tunnl.gg domain, thanks.
- ValdikSS 10mo agoI'm running the similar but different, protocol-agnostic service: https:/ssh-j.com/ Only regular SSH to serve, regular SSH to connect. No public URLs though (it's not for web services).
- rohan_ 10mo agoDoes this just wrap cloudflare tunnels?