Hacker Remix

Webtop – Alpine,Ubuntu,Fedora,and Arch containers containing full desktop envs

351 points by weitzj 5 days ago | 71 comments

windexh8er 5 days ago

I've been using the LSIO Webtop images for a few years. They're awesome for composable desktops that I run behind a VPN for a quick and easy dirty connection at home.

Combine the Webtop images by forcing it's traffic through the Gluetun [0] container and you're up and running. These Webtop containers are nice and snappy as well thanks to Kasm. Awesome OSS.

[0] https://github.com/qdm12/gluetun

Havoc 5 days ago

This is me being rather lazy admittedly, but do you have a compose/similar for connecting them by chance?

windexh8er 5 days ago

Basically the same, but a bit more complete in terms of the exposed config: https://pastebin.com/hPvs08qh

Havoc 4 days ago

Thank you!

usagisushi 5 days ago

Here it is https://pastebin.com/64825QxC

Havoc 4 days ago

Thank you!

yonatan8070 5 days ago

Could one build off this to run the desktops on the local host's display? I.e. as an IoT device with a display and some custom UI?

chrisweekly 5 days ago

> "Warning

Do not put this on the Internet if you do not know what you are doing.

By default this container has no authentication and the optional environment variables CUSTOM_USER and PASSWORD to enable basic http auth via the embedded NGINX server should only be used to locally secure the container from unwanted access on a local network. If exposing this to the Internet we recommend putting it behind a reverse proxy, such as SWAG, and ensuring a secure authentication solution is in place. From the web interface a terminal can be launched and it is configured for passwordless sudo, so anyone with access to it can install and run whatever they want along with probing your local network."

I hope everyone intrigued by this interesting and potentially very useful project takes heed of this warning.

satertek 5 days ago

That warning applies to anything you run locally. And going further, in this day and age, I would never put up any home service without it being behind Cloudflare Access or some form of wireguard tunnel.

Timber-6539 5 days ago

Just put up basic auth infront of your services and be done with it.

KronisLV 5 days ago

I've done that in the past, even for securing the admin pages of some software (there was once an issue where the admin page auth could be bypassed, this essentially adds another layer). With TLS it's okay for getting something up and running quickly.

Of course, for the things that matter a bit more, you can also run your own CA and do mTLS, even without any of the other fancy cloud services.

jazzyjackson 5 days ago

After coming across a brief tutorial of mTLS in this tool for locking down access to my family photo sharing [0] I have bounced around the internet following various guides but haven't ended up with a pfx file that I can install in a browser. Can you recommend any resource to understand which keys sign what, and what a client certificate is verified against?

The guides I find often contain the openssl incantations with little explanation so I feel a bit like stumbling through the dark. I realize how much I've taken stacktraces for granted when this auth stuff is very "do or do not, there is no error"

[0] https://github.com/alangrainger/immich-public-proxy/blob/mai...

KronisLV 4 days ago

Honestly, the most approachable way will be to use something like Keystore Explorer: https://keystore-explorer.org/

Alternatively, this guide focuses on Apache2 configuration but also goes through the certs https://www.openlogic.com/blog/mutual-authentication-using-a... (it’s a little dated though)

Here’s also something a bit more recent for Nginx https://darshit.dev/posts/two-way-ssl-nginx/

baq 5 days ago

the fact that we have to keep reinventing kerberos all the time because it doesn't speak http is starting to legitimately annoy me.

rlkf 5 days ago

Firefox can be configured to use Kerberos for authentication (search for "Configuring Firefox to use Kerberos for SSO"); on Windows, Chrome is supposed to do so too by adding the domain as an intranet zone.

j16sdiz 5 days ago

HTTP auth can work with kerberos.

Chrome, Firefox, Internet Explorer -- all support some form of kerberos auth in HTTP/HTTPS.

baq 5 days ago

I mean, I'm aware of SPNEGO etc. It's just that it was... ignored(?) by the startups/the community/google? Whatever little support there is is comparatively a worse experience than what we've got now for no really good reason.

mschuster91 5 days ago

Kerberos is old neckbeard tech, highly complex to set up, with layers upon layers of legacy garbage. Trying to get it working is ... a nightmare, I prefer even the garbagefest that is Keycloak over dealing with Kerberos. At least that just requires somewhat working DNS and doesn't barf when encountering VPNs, split horizon DNS or split tunnels.

The only places I've seen a working Kerberos setup outside of homelabs is universities (who can just throw endless amounts of free student labor power onto solving any IT problem) and large governments and international megacorps.

mschuster91 5 days ago

Good luck when the TCP or SSL stack has an issue. These bugs are rare but they do exist and you're getting fucked royally if your entire perimeter defense was a basic auth prompt.

Windows and Linux have both had their fair share of network stack bugs, OpenSSL had Heartbleed and a few other bugs, and hell you might even run into bugs in Apache or whatever other webserver you are using.

nurettin 4 days ago

It would have taken several days to heartbleed your private key in 2013 if you also added fail2ban. Your home lab probably isn't on the high priority target list.

mschuster91 4 days ago

> Your home lab probably isn't on the high priority target list.

Yeah but these days with botnets widely available to hire? Everything is fair game and whatever you run gets indexed on Shodan and whatever almost immediately. The game has never been easier for skiddies and other low-skill attackers, and mining cryptocoins or hosting VPN exit nodes makes even a homelab a juicy target.

My homelab for example sports four third-hand HP servers with a total of about 256GB RAM and 64 CPU cores on a 200/50 DSL link. That's more than enough horsepower to cause serious damage from.

Melomomololo 5 days ago

[dead]

hifikuno 5 days ago

Yeah, I made a mistake with my config. I had setup SWAG, with Authelia (i think?). Got password login working with 2fa. But my dumbass didn't realize I had left ports open. Logged in one day to find a terminal open with a message from someone who found my instance and got in. Called me stupid (I mean they're not wrong) and all kinds of things and deleted everything from my home drive to "teach me a lesson". Lesson painfully learnt.

But before that happened Webtop was amazing! I had Obsidian setup so I could have access on any computer. It felt great having "my" computer anywhere I went. The only reason I don't have it set up is because I made the mistake of closing my free teir oracle cloud thinking I could spin up a fresh new instance and since then I haven't been able to get the free teir again.

7bit 5 days ago

> deleted everything from my home drive to "teach me a lesson". Lesson painfully learnt.

I had a mentor in my teenage year that was the same kind of person. To this day the only meaningful memory I have of him is that he was an asshole. You can teach a lesson and be empathetic towards people that make mistakes. You don't have to be an asshole.

Dalewyn 5 days ago

The lessons we learn best are those which we are emotionally invested in and sometimes that emotion can be negative, but a lesson will be learned regardless.

7bit 3 days ago

LOL! That's why we still smack kids' hands with a stick if they answer a question in school wrong. Because it emotionally sticks and definitely does not cause any psychological issues.

ano-ther 5 days ago

Sure. But you don’t have to deliberately destroy all data and be mean about it as in GP‘s case to get an emotional reaction.

elashri 5 days ago

> The only reason I don't have it set up is because I made the mistake of closing my free teir oracle cloud thinking I could spin up a fresh new instance and since then I haven't been able to get the free teir again.

People are automating the process of requesting new arm instances on free tier [1]. You would find it near impossible to compete without playing same game

[1] https://github.com/mohankumarpaluru/oracle-freetier-instance...

7thpower 5 days ago

Well, I know what I’m doing tomorrow when I get up.

hrrsn 4 days ago

I had the same thing happen to me. I tried running a script for a month without luck (Sydney region). What did work was adding a credit card to upgrade to a paid account - no issues launching an instance, and it's still covered under the free tier.

Maakuth 5 days ago

There are operations that put cryptominers into any unauthenticated remote desktops they can find. Ask me how I know... Way friendlier than wiping your data though.

unixhero 5 days ago

There are groups of people who hunt for writeable ftp servers to be used for random filesharing. At least this used to be a thing

dspillett 5 days ago

> Lesson painfully learnt.

There are actually two lessons there:

1. Be careful what you open to the public internet, including testing to make sure you aren't accidentally leaving open defaults as they are.

2. Backups. Set them up, test them, make sure someone successfully gaining access to the source box(es) can't from there wipe all the backups.

doubled112 5 days ago

An offline backup is incredibly inconvenient, but also very effective against shenanigans like these.

Also agree that backups should be "pulled" with no way to access them from the machine being backed up.

dspillett 4 days ago

I use a soft-offline backup for most things: sources push to an intermediate, backups pull from the intermediate, neither source not backup can touch each other directly.

Automated testing for older snapshots is done by verifying checksums made at backup time, and for the latest by pushing fresh checksums from both ends to the middle for comparison (anything with a timestamp older than last backup that differs in checksum indicates an error on one side or the other, or perhaps the intermediate, that needs investigating, as does any file with a timestamp that differs more than the inter-backup gap, or something that unexpectedly doesn't exist in the backup).

I have a real offline backups for a few key bits of data (my main keepass file, encryption & auth details for the backup hosts & process as they don't want to exist in the main backup (that would create a potential hole in the source/backup separation), etc.).

gbraad 5 days ago

I created personalized image with tailscale and kasmvnc for this particular reason, ... not on a public VPS. you can find images on my github as inspiration; do not directly copy unless you understand what you are doing.

fulafel 5 days ago

Also note that their example docker config will allow anyone from the internet to connect, and even add a incoming rule in your host firewall to allow it. This is because they don't specify the port like -p 127.0.0.1:hostport:containerport (or the analog in the docker-compose config).

dymk 5 days ago

We had an application that had quite the complex build process, and targeted only macOS and Linux. The mechanical engineers all used Windows, and needed to use the application. Rather than buying them macbooks or having them manage a Linux box, I wound up building something like Webtop with webvnc, and deployed containers to google cloud. Engineers could go to a URL and access the application, no need to download or install anything. It worked pretty well, all things considered.

chromakode 5 days ago

Selkies[1] is another interesting project in this space. It uses webrtc for low latency streaming and remote desktop suitable for gaming in the browser.

[1]: https://selkies-project.github.io/selkies-gstreamer/