social.coop

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Max ResingJust wanted to share some thoughts on <a href="https://infosec.exchange/tags/RFC9715" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RFC9715</a> - an <a href="https://infosec.exchange/tags/RFC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RFC</a> that defines standards on reducing the <a href="https://infosec.exchange/tags/DNS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DNS</a> issue of IP fragmentation over <a href="https://infosec.exchange/tags/UDP" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#UDP</a>. It's not a long read, but a good one for everyone who understands the issues of large UDP responses on the <a href="https://infosec.exchange/tags/Internet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Internet</a>. A great leap forward to (hopefully) reduce the reflection/amplification <a href="https://infosec.exchange/tags/DDoS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DDoS</a> potential of DNS.Just today I learned that <a href="https://infosec.exchange/tags/Google" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Google</a> will configure their public DNS resolvers to limit to ~1400 bytes (smaller adjustments expected while figuring out the sweet spot in production). From now on, DNS responses which exceed this limit will have the truncated flag set instructing the client to resolve back to <a href="https://infosec.exchange/tags/TCP" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TCP</a>. <a href="https://infosec.exchange/tags/ipv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv4</a> <a href="https://infosec.exchange/tags/ipv6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv6</a> <a href="https://infosec.exchange/tags/ietf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ietf</a>

SkorpyAnstatt random Zöllen einfach mal <a href="https://chaos.social/tags/IPv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv4</a> abschalten, weil ist ja sowieso alles Frei.<a href="https://chaos.social/tags/Freifunk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Freifunk</a> <a href="https://chaos.social/tags/Frankfurt" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Frankfurt</a> <a href="https://chaos.social/tags/AS64475" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AS64475</a> <a href="https://chaos.social/tags/FFFFM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FFFFM</a>

Yvan ーイボん 🗺️ :ferris: :go:<a href="https://hachyderm.io/tags/ipv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv4</a> is hellSo much easier to go <a href="https://hachyderm.io/tags/ipv6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv6</a> only.

saiki 🚒💨:manjaro: :debian:<a href="https://elbmatsch.de/@DerSchulze" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@DerSchulze</a> Ich nutze auch einen, weil ich hier hinter nem CGNat mit <a href="https://social.tchncs.de/tags/IPv6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv6</a> stecke und keine IPv4 habe :D aber für gewisse Dinge im Selfhost braucht man leider noch ne <a href="https://social.tchncs.de/tags/IPv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv4</a>.

asmwToday, when looking into <a href="https://infosec.exchange/tags/ipv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv4</a>/#ipv6 issues, I learned about <a href="https://infosec.exchange/tags/happyeyeballs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#happyeyeballs</a> (<a href="https://en.wikipedia.org/wiki/Happy_Eyeballs" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://en.wikipedia.org/wiki/Happy_Eyeballs</a>).Such a pretty name for such an annoying problem.

MichaelQuestion to the network people out there:Are there any ISPs that are IPv6 only (without providing a NAT/whatever)?Background: Having an argument with a provider that hasn't published any AAAA records, and whilst I think that's poor form, I'm wondering if this would actually negatively affect any actual users in practice?<a href="https://mstdn.thms.uk/tags/ip" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ip</a> <a href="https://mstdn.thms.uk/tags/ipv6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv6</a> <a href="https://mstdn.thms.uk/tags/ipv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv4</a> <a href="https://mstdn.thms.uk/tags/isp" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#isp</a>

jbI’m not against April Fools RFCs, as much as questioning how many new people in ops and infrastructure actually understand networking well enough to get that this is a joke.<a href="https://datatracker.ietf.org/doc/draft-april-ipv5/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://datatracker.ietf.org/doc/draft-april-ipv5/</a><a href="https://hackers.town/tags/internet" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#internet</a> <a href="https://hackers.town/tags/ipv6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv6</a> <a href="https://hackers.town/tags/ipv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv4</a> <a href="https://mspsocial.net/@jima" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@jima</a>

Kevin Karhan :verified:<a href="https://mastodon.ie/@DoctorBrodsky" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@DoctorBrodsky</a> <a href="https://toot.wales/@woe2you" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@woe2you</a> <a href="https://hachyderm.io/@miah" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@miah</a> given <a href="https://infosec.space/tags/Quad9" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Quad9</a> bowed before the <a href="https://infosec.space/tags/Contentmafia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Contentmafia</a> and censored <a href="https://infosec.space/tags/DNS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DNS</a> requests, I'll continue to recommend using <a href="https://infosec.space/tags/OpenNIC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OpenNIC</a>'s Servers <a href="https://github.com/greyhat-academy/lists.d/blob/a4a7ccf70d8504ebbffd7e5fbcd5630294860434/dns.servers.list.tsv" rel="nofollow noopener noreferrer" target="_blank">instead</a><code>94.103.153.176 & 2a02:990:219:1:ba:1337:cafe:3</code> as well as <code>144.76.103.143 & 2a01:4f8:192:43a5::2</code> <ul><li>If you <a href="https://mastodon.ie/@DoctorBrodsky/114251891439728473" rel="nofollow noopener noreferrer" target="_blank">only add a single</a> <a href="https://infosec.space/tags/IPv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv4</a> address, no <a href="https://infosec.space/tags/IPv6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv6</a> resolution will take place over said provider or worse even no IPv6 connectivity at all...</li></ul>I merely <a href="https://github.com/greyhat-academy/lists.d/blob/a4a7ccf70d8504ebbffd7e5fbcd5630294860434/dns.servers.list.tsv#L25" rel="nofollow noopener noreferrer" target="_blank">retain quad9</a> on said list for archival purposes. I Yeeted <a href="https://infosec.space/tags/CloudFlare" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CloudFlare</a> aka. <a href="https://infosec.space/tags/ClownFlare" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ClownFlare</a> since they are a <a href="https://infosec.space/tags/RogueISP" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RogueISP</a>!

Kevin Karhan :verified:<a href="https://mastodon.neilzone.co.uk/@neil" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@neil</a> my <a href="https://infosec.space/tags/ISP" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ISP</a> is <a href="https://infosec.space/tags/IPv4only" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv4only</a> and refuses to allocate me even a single /64 of <a href="https://infosec.space/tags/IPv6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv6</a> but happily offers me another /28 of <a href="https://infosec.space/tags/IPv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv4</a>'s...<ul><li>I wish I was kidding…</li></ul>

Quincy<a href="https://chaos.social/tags/IPv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv4</a>-Adressen als Wertanlage

Kevin Karhan :verified:<a href="https://awawa.meo.ws/@fusl" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@fusl</a> <a href="https://mastodon.online/@mnalis" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@mnalis</a> <a href="https://infosec.exchange/@0xF21D" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@0xF21D</a> I do that with <a href="https://infosec.space/tags/pfSense" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#pfSense</a> & <a href="https://infosec.space/tags/OPNsense" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OPNsense</a> (depending on the exact network in question) and have it merge <a href="https://github.com/greyhat-academy/lists.d/blob/main/dns.servers.list.tsv" rel="nofollow noopener noreferrer" target="_blank">multiple sources</a> that get cached.In total, I do may out the 30 DNS servers and whilst I have <a href="https://infosec.space/tags/IPv4only" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv4only</a>, I have everything ready for <a href="https://infosec.space/tags/DualStack" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DualStack</a> (<a href="https://infosec.space/tags/IPv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv4</a> + <a href="https://infosec.space/tags/IPv6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv6</a>) once my ISP stops keeing it's thumbs um their ass...<a href="https://infosec.space/tags/sarcasm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sarcasm</a>

Anders Gulden Olstad<a href="https://bsd.network/@jaypatelani" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@jaypatelani</a> <a href="https://snac.smithies.me.uk/justine" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@justine</a> When my web browser seems to prefer <a href="https://infosec.exchange/tags/IPv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv4</a> over <a href="https://infosec.exchange/tags/IPv6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv6</a>, despite the latter being operational - is it a <a href="https://infosec.exchange/tags/Firefox" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Firefox</a> issue or a <a href="https://infosec.exchange/tags/OpenBSD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OpenBSD</a> OS issue? I think my <a href="https://infosec.exchange/tags/OPNSense" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#OPNSense</a> gateway is innocent

WalkerIt would be nice if infosec and IT tools provided better IPv6 support. Weren't we supposed to run out of IPv4 addressees 10 years ago? What happened to the IPv6 revolution?<a href="https://infosec.exchange/tags/incidentresponse" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#incidentresponse</a> <a href="https://infosec.exchange/tags/ipv6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv6</a> <a href="https://infosec.exchange/tags/ipv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv4</a> <a href="https://infosec.exchange/tags/infosec" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#infosec</a>

Kevin Karhan :verified:<a href="https://digitalcourage.social/@krzym" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@krzym</a> <a href="https://oxytodon.com/@fuchsiii" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@fuchsiii</a> <a href="https://social.bund.de/@BNetzA" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@BNetzA</a> und wie <a href="https://infosec.space/tags/Diesel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Diesel</a> funktioniert <a href="https://infosec.space/tags/IPv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv4</a>...<a href="https://www.youtube.com/watch?v=myXi1KMyClc" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.youtube.com/watch?v=myXi1KMyClc</a><a href="https://infosec.space/tags/Sarkasmus" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Sarkasmus</a>

Kevin Karhan :verified:<a href="https://digitalcourage.social/@krzym" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@krzym</a> <a href="https://oxytodon.com/@fuchsiii" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@fuchsiii</a> solange <a href="https://social.bund.de/@BNetzA" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@BNetzA</a> nicht mindestens ein /64 an <a href="https://infosec.space/tags/IPv6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv6</a> pro <a href="https://infosec.space/tags/IPv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv4</a> vorschreibt wird sich nix dran ändern.<ul><li>Erst wenn <a href="https://infosec.space/tags/DualStack" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DualStack</a> flächendeckend ist kann IPv4 abgeschaltet werden!</li></ul>

Dan OachsNo way I can properly explain this in 500 characters, but the short version is this:Don't use a shared IP address for your website/app and expect zero issues.If your cloud hosted app/website happens to share an IP address with another app that scans the entire internet, don't be surprised if your app/website gets blocked and your customers can't reach you. :(In this case, that IP address is 199.36.158.199. Take a look at the SSL cert for all the domains hosted there. <a href="https://ipv6.social/tags/networking" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#networking</a> <a href="https://ipv6.social/tags/ipv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv4</a>

U3A CommunitiesIPv4 and IPv6 addresses 🗓️ Start: 15 April 2025 3:00 pm ⏳ End: 15 April 2025 5:00 pm15th April 2025 at 3pm UKThis month we look at IP (Internet Protocol) addresses, including both IPv4 and IPv6.  The talk includes a brief description of IPv4 addresses, problems with IPv4, IPv6 addresses and current IPv6 status.Joining details will be emailed to subscribers nearer the time.  If you aren’t a member, it’s free to join here <a href="https://u3acommunities.org/subscribe-to-computing-forum/" rel="nofollow noopener noreferrer" target="_blank">https://u3acommunities.org/subscribe-to-computing-forum/</a>.Plenty of time is reserved for discussions. <a href="https://u3acommunities.org/event/ipv4-and-ipv6-addresses/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://u3acommunities.org/event/ipv4-and-ipv6-addresses/</a>

Radio AzureusTIL about lsd(1)What an awsome addition to my lolcat arsenal!The acronym is not correctly used by me in this case, because I **know** I used LSD in the 1990's (the command in a UNIX ENV:) and LSD is just as pretty as it was psychedelic in the last century!`man lsd `An ls command with a lot of pretty colors and some other stuff.<a href="https://fuzzies.wtf/@altbot" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@altbot</a> 🖋️ <a href="https://mastodon.social/tags/bash" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#bash</a> <a href="https://mastodon.social/tags/sh" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sh</a> <a href="https://mastodon.social/tags/zsh" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#zsh</a> <a href="https://mastodon.social/tags/ksh" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ksh</a> <a href="https://mastodon.social/tags/csh" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#csh</a> <a href="https://mastodon.social/tags/Networking" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Networking</a> <a href="https://mastodon.social/tags/IPv6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv6</a> <a href="https://mastodon.social/tags/IPv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv4</a> <a href="https://mastodon.social/tags/ProxMox" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ProxMox</a> <a href="https://mastodon.social/tags/freeBSD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#freeBSD</a> <a href="https://mastodon.social/tags/Linux" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Linux</a> <a href="https://mastodon.social/tags/POSIX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#POSIX</a> <a href="https://mastodon.social/tags/Programming" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Programming</a>

LavX NewsIPv4 Addresses Now Serve as Collateral for $100M Loans: A New Era in Networking FinanceIPv4.Global has launched a revolutionary loan service that allows companies to use their IPv4 addresses as collateral, a move that could reshape the financial landscape for network operators. With IPv...<a href="https://news.lavx.hu/article/ipv4-addresses-now-serve-as-collateral-for-100m-loans-a-new-era-in-networking-finance" rel="nofollow noopener noreferrer" target="_blank">https://news.lavx.hu/article/ipv4-addresses-now-serve-as-collateral-for-100m-loans-a-new-era-in-networking-finance</a><a href="https://mastodon.cloud/tags/news" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#news</a> <a href="https://mastodon.cloud/tags/tech" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tech</a> <a href="https://mastodon.cloud/tags/CloudComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CloudComputing</a> <a href="https://mastodon.cloud/tags/IPv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IPv4</a> <a href="https://mastodon.cloud/tags/NetworkingFinance" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NetworkingFinance</a>

Will PetterssonIs there a standardised (or vaguely common) hostname akin to localhost that either a) only resolves to the IPv4 127.0.0.1, or only resolves to the IPv6 [::1]? In my experience, whether localhost resolves to an IPv4 or IPv6 address seems to be somewhat OS-dependent (or even system-dependent), I am wondering if there's a standard way to specify that I do want either the IPv4 version or the IPv6 version?Why did this come up, you ask? I have a service on localhost that only listens on IPv4, but today localhost resolved to [::1] and it broke. Now I fixed it easily by specifying 127.0.0.1 as the server address instead of localhost in the upstream proxy, but it did make me start wondering.Note that I've fixed my issue. I'm purely curious about standard/common hostnames for IPv4-only localhost or IPv6-only localhost. If you give me advice on fixing the problem, I'll just ignore it.<a href="https://toot.cat/tags/tcpip" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tcpip</a> <a href="https://toot.cat/tags/ipv4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv4</a> <a href="https://toot.cat/tags/ipv6" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ipv6</a> <a href="https://toot.cat/tags/localhost" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#localhost</a>

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