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Cake day: June 30th, 2023

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  • If your windows computer makes an outbound connection to a server that is actively exploiting this, then yes: you will suffer.

    But having a windows computer that is chilling behind a network firewall that is only forwarding established ipv6 traffic (like 99.9999% of default routers/firewalls), then you are extremely extremely ultra unlucky to be hit by this (or, you are such a high value target that it’s likely government level exploits). Or, you are an idiot visiting dogdy websites or running dodgy software.

    Once a device on a local network has been successfully exploited for the RCE to actually gain useful code execution, then yes: the rest of your network is likely compromised.
    Classic security in layers. Isolatation/layering of risky devices (that’s why my homelab is on a different vlan than my home network).
    And even if you don’t realise your windows desktop has been exploited (I really doubt that this is a clean exploit, you would probably notice a few BSOD before they figure out how to backdoor), it then has to actually exploit your servers.
    Even if they turn your desktop into a botnet node, that will very quickly be cleaned out by windows defender.
    And I doubt that any attacker will have time to actually turn this into a useful and widespread exploit, except in targeting high value targets (which none of us here are. Any nation state equivalent of the US DoD isn’t lurking on Lemmy).

    It comes back to: why are you running windows as a server?

    ETA:
    The possibility that high value targets are exposing windows servers on IPv6 via public addresses is what makes this CVE so high.
    Sensible people and sensible companies will be using Linux.
    Sensible people and sensible companies will be very closely monitoring what’s going on with windows servers exposed by ipv6.
    This isn’t an “ipv6 exploit”. This is a windows exploit. Of which there have been MANY!


  • If the router/gateway/network (IE not local) firewall is blocking forwarding unknown IPv6, then it’s a compromised server connected to via IPv6 that has the ability to leverage the exploit (IE your windows client connecting to a compromised server that is actively exploiting this IPv6 CVE).

    It’s not like having IPv6 enabled on a windows machine automatically makes it instantly exploitable by anyone out there.
    Routers/firewalls will only forward IPv6 for established connections, so your windows machine has to connect out.

    Unless you are specifically forwarding to a windows machine, at which point you are intending that windows machine to be a server.

    Essentially the same as some exploit in some service you are exposing via NAT port forwarding.
    Maybe a few more avenues of exploit.

    Like I said. Why would a self-hoster or homelabber use windows for a public facing service?!


  • How many people are running public facing windows servers in their homelab/self-hosted environment?

    And just because “it’s worked so far” isn’t a great reason to ignore new technology.
    IPv6 is useful for public facing services. You don’t need a single proxy that covers all your http/s services.
    It’s also significantly better for P2P applications, as you no longer need to rely on NAT traversal bodges or insecure uPTP type protocols.

    If you are unlucky enough to be on IPv4 CGNAT but have IPv6 available, then you are no longer sharing reputation with everyone else on the same public IPv4 address. Also, IPv6 means you can get public access instead of having to rely on some RPoVPN solution.







  • Transfering a domain from one registrar (IE reseller) to another can be a pain, but yes you can - it normally involves a fee and manual actions from the registrars.
    As long as the new registrar supports the TLD. A few Geo-TLDs can only be resold/managed by some registrars.

    The easiest thing to do is to point the domain at ClouDNS nameservers.
    Make sure you are happy with ClouDNS (I’ve never had issues with them) etc before committing


  • Nginx Proxy Manager is probably perfect for you.
    Pick a domain (like mylab.home or something), set up your home network to resolve that domains IP as your docker hosts IP.
    NPM will do self-signed certs. So, you will get a “warning, Https is insecure” kinda page when you visit it. You could import NPMs root cert into your OS/browser so it trusts it (or set up an “don’t warn for this domain” or something).

    If you don’t want per-client config to trust it, then you need to buy a domain, use a DNS that supports letsencrypt DNS-challenge, and grab certs that way (means you don’t need a publicly accessible well-known route exposed)



  • VMix popularity exploded during the pandemic. A lot of conferences became a blend of teams/zoom/Google and VMix.

    Might be hardware based like a multi-m/e video mixer (blackmagic make cheap ones), or maybe more of a screen manager (like barco e2, analog way livecore). But, unless there are production requirements, vmix is much more likely. It’s (now) proven, and much cheaper!

    OBS can absolutely do it. There are other open source softwares that can do it.
    I’ve seen people bastardise Resolume into something that looks decent.
    There are some online studio systems so everything you do is virtualized. Streamyard used to be like this, till it was bought by hopin (I think it was hopin)


  • You can do reverse proxy on the VPS and use SNI routing (because the requested domain is in clear text over HTTPS), then use Proxy Protocol to attach the real source IP to the TCP packets.
    This way, you don’t have to terminate HTTPS on the VPS, and you can load balance between a couple wireguard peers so you have redundancy (or direct them to different reverse proxies or whatever).
    On your home servers, you will need an additional frontend(s) that accepts Proxy Protocol from the VPS (as Proxy Protocol packets aren’t standard HTTP/S packets, so standard HTTPS reverse proxies will drop them as unknown/broken/etc).
    This way, your home reverse proxy knows the original IP and can attach it to the decrypted http requests as x-forward-for. Or you can do ACLs based on original client IP. Or whatever.

    I haven’t found a way to get a firewall that pays attention to Proxy Protocol TCP headers, but I haven’t found that to really be an issue. I don’t really have a use case





  • It’s not a workaround.
    In the old days, if you had 2 services that were hard coded to use the same network port, you would need virtualization or a different server and make sure the networking for those is correct.

    Network ports allow multiple services to use the same network adapter as a port is like a “sub” address.
    Docker being able to remap host network ports to containers ports is a huge feature.
    If a container doesn’t need to be accessed outside of the docker network, you don’t need to expose the port.

    The only way to have multiple services on the same port is to use either a load balancer (for multiple instances of the same service) or an application-aware reverse proxy (like nginx, haproxy, caddy etc for web things, I’m sure there are other application-aware reverse proxies).