you’re welcome.

what i’ld suggest… a general rule that i like to always follow is to use a test system for everything new. but that does not need to be a full separate system every time.

lets say you have your mailbox and want to try getting new mails from it using fetchmail. first you can use uidl mechanisms to only fefch every mail once and besides that leave them all on the server, but i like it a bit more secure: create a second email adress/account at your mail providers service only for testing. thus you can do whatever you like to to test the mechanisms only without even touching your real inbox (maybe even fill it up with large emails and look how the system reacts, i once had an email account with a cheap provider that deadlocked the inboxes when full…). then when everything is as you want it, switch the account and password (or create another config file for fetchmail) and your’re done. every change (not only fetchmail things) could go tested this way before going live with the changes. filtering could be done with procmail for example, but when the mda that is called by procmail somehow exits with success when the email really isn’t delivered, then the email might get lost forever depending on the settings of course. so fiddling with new stuff always carries the risk of not fiddling correctly ;-)

have fun !

Its possible to tell your mta (like postfix) to use another mta for all mails, or only some domains etc, so using a third party to play the internet facing service then getting the mails by fetchmail, storing them in a dovecot server is easy. on the sending part you could use your standard email client (i.e. thunderbird on pc or k9-mail on smartphone) to send it to your postfix instance that also sits on the server hosting your dovecot service. the mta there takes the mail and delivers it by rules which could just be using the mta of your freemailer using username/password of your account for all outgoing emails. i am doing this but the “external” mail system are my servers as well, i just don’t want emails to stay too long on VMs in the datacenter where i have no access to the physical disks in case something goes wrong.

a raspberry pi is sufficient for such a aetup (i am using a pi4 currently but for emails only i’ld say a 3 or older would do too), adding a disk via usb makes storage huge and cheap then, i use two usb ssd’s in a raid1 for storage… that server could be only accessible through vpn if you whish, depending on your skills and needs (i mainly use ssl client certificates that are supported by k9mail and thunderbird so it fits seamless to be connected through a haproxy that authenticates these before proxying the plain connection to the pi) clients like thunderbird can offline-store all emails (configure download-or-not per imap folder) making searches easy and quick while my k9 client can search locally or on the server if needed.

maybe adjust maximum mail size of your own mta to exactly match (or slightly less) that of the freemailer you use to prevent surprises of big but later then unsent emails.

its possible to have a nextcloud instance on that same pi that acts as an email web mailer just in case of (i really dont need it, but i’ve set this up anyway). nextcloud is also great for syncing/backup files pictures, contacts notes todo lists and calendar of your phone (where i use davx5 opentasks and foldersync for). there are other webmailers available but installing /using nextcloud is not a too bad idea either ;-)

i suggest also setting up some automatic offsite backup with snapshots of that pi then to cover emails and the setup and its configs ;-)

one example of a program that did multiple things is sfdisk, it used to make the kernel reload the new partition table but that was not its main job, only changing them. the extra functionality moved to blockdev which is nearer to doing such as it also triggers flushing buffers and i think setting read/write status. i am fully ok with that change as it removes code from a program that doesn’t need it to another that already does similar things so that other partitioning programs like gdisk fdisk or parted could go the same way so that maintainers of the reread-partition-table things can concentrate on one solution at one place (in userspace) instead of opening issues at an unknown number of projects that also alter partitioning. the “do one thing” paradigma is good for developers who maintain the code and i pretty much appreciate their work. if you are up to only want one-day-flies that either die or take huge amounts of resources only for keeping them alive (image of a mayfly in an emergency room and a heart-lung machine attached while chirurgs rushing around trying to enlenghten its life a few seconds more) then you are good with monolithic tools that could hardly be maintained and suck allday as no one wants to fix any bugs or cannot without creating new ones due to the tightened dependency hell it has internally.

the point is not a lack of examples doing wrong but where one wants to be heading towards.

Lol what???

wouldn’t that be the definition of stable?

the computer on voyager 2 is running for 47 years now, they might have rebooted some parts meanwhile but overall its a long time now, and if the program is free of bugs the time that program can run only depends on the durability of the hardware, protection from cosmic rays (which were afaik the problems the voyager probes faced mostly, not bugs) which could be quite long if protected from hazardous environments and maybe using optoelectronics but the point is that a bug free software can run forever only depending on hardware durability and energy supply, in any other way no humans are needed for a veery long time ;-)

However, systemd makes the system much more secure and reliable as it is

less secure and less reliable day-by-day you meant? systemd introduces needless dependencies ever since as if that was it sole intention ever from its very beginning, which already were used for wide attacks, and exactly those attacks that the people working hard to remove unneeded dependencies for security reasons meant to prevent by things like “do one thing only” (but security was not the number 1 reason for this one i think), systemd instead: ‘lets add another level of that exponential dependency tree from the insecurity hell’ felt like they did this stupid thing intentionally every month for a decade or more.

and stability… if you don’t monitor what systemd does, you’ll never know how bad it actually is. i’ve made custom scripts to monitor systemd’s failures (failing in doing a very primitive of its job) and there are hundreds (actually varying around 200 to 300 sometimes more) of such per day on all our systems for one particular(!) measurement only that was breaking service stability and i wrote a measure-and-fix+monitor workaround. other fixes were not monitored however, only silently fixed by workarounds, thus just unnumbered systemd bugs/instabilities in the dark that stole a lot of work capacity…

if you run distros with systemd, unreliability is your daily experience unless you don’t really care or have never experienced stability before - like running a service (a single process) for 8 years without any interruption then it suddenly stops and you go like “was it maybe an attack? the process died, how could that be? were there any connects from outside at that moment?” not talking about not updating something that long, but “stability” itself CAN be like if you dont stop it, it’ll still run in 10000+ years maybe millions, more likely that humans extincted themselves way earlier than of a process “just dying” by a bug… while systemd even randomly stops things that were running well for no reason (varying) once a month more or less (also varying in what it actually randomly stops, sometimes (2 times) it even stopped ssh on my servers, me asking myself if i should create yet another workaround for systemds buggyness to not locking me out again from network or ratjer go for the real solution for most* of all systemd problems - *see below) on the few standard installs i personally have as i didn’t have the way to automatically replace provider installed distro on VMs in the DC. i want this replacing automatically for the same reason why i don’t like systemd, it causes manual work for a thing that should go automated. however due to systemd’s perpetuated instability i now managed to have this way, and every second working on getting rid of systemd is worth it 100k times. this however does not solve all systemd-introduced problems as the xz attack showed (a systemd-dependency on xz made the infected xz library beeing useful-for-the-atracker during compiletime of sshd binary with which then the attacker could infect the newly built sshd binary),one could still be attacked through systemd’s dependency hell even if one does not use systemd by oneself, but the build machines used for your distro could be affected/infected by systemd’s needless dependencies when “also” compiling for systemd-affected distributions thus there is the risk of becoming a victim of needless-systemd-dependencies while not using systemd at all. however the attack through systemd dependency (and that the public solution was not the removal of needless dependencies only included as source for superflous third party “needs”) made clear that systemd is an overall problem for security that will not be solved quickly but stay just like all windows insecurities will stay as long as they whish to push them to their “users”.

systemd reducing overall security and its unreliability combined with some builtin impediments (i.e. when debugging its defects) is what drove me away from systemd. there are solutions way more stable and way more secure (and way better documented btw) that do not call in for needless dependencies, reducing risks, attack vectors and increases overall debuggability i.e. by deterministic behaviour as an easy example. and none of its important (to me) promises have been fulfilled yet by systemd, drop-in-replacement? have heared that lie thousands of times, but in the last decade i have not experienced it a single time in a distro and it does not seem to be included/finished any more.

for windows users or windows admins a linux with systemd on it IS an improvement in stability, security and of course for updating, yes. but all of that does not come from systemd, rather the opposite is the case, systemd reduces it month by month, thats my experience and thats the most important experience for me, idc what lies whitdepapers tell or what broken promises are believed by anyone or the masses, i want secure and stable servers and services and systemd does not fit in for any of these goals and the time it was still “young” and early problems could be accepted in the hope they get fixed soon are gone, but without those fixes having ever appeared.

sometimes the cat chooses you, sometimes you get choosen by the cat?

maybe its the new standard: USB-Cat

the OS was not the comparison, but the hardware it runs on (just as @Freefall said) but also you seem to be wrong with your other assumption:

And both those devices are tied to a specific OS.

Which seems not to be the case as install instructions for another OS can be found here (i didn’t try it though) for the mentioned device:

https://wiki.lineageos.org/devices/pdx215/

lineage os still is an “android”, but another vendor with clearly different approach than the original firmware and what hinders you from writing bsd drivers and compiling a bsd kernel for it instead? So i count the Xperia 1 III as NOT bound to any OS or OS vendor.

But despite the way longer possible support/security, freedom of choice and endless other possibilities that often come along with free OS choice, this pure and great advantages weren’t even mentioned there, thus it wasnt an OS comparison as it also wasn’t a bound-to-an-OS vs. absentness of vendor-lock-in-limitation-jungle comparison.

ads with install buttons always are traps. and traps are always bad (except snmp traps, those are good but unreliable)

same way ads at download pages stating “proceed to download” are traps.

also ads at search result pages stating " 1 2 3 4 … next" are traps too.

for the “sponsored” note: there is no boundary here that makes it really clear for what that ‘sponsored’ is meant for. without any boundary it could be for something above it, below it, on the side or maybe even something that opens when you click on “sponsored” itself (seen it this way once). it could be for an ad that just failed to load (noticed the free space above that “sponsored” text? maybe the ad loads a bit later just to shift the real contents down so you “accidently” click on the ad that loads intentionally late for this very accident to be likely to happen?) if you use adblockers - which you should do for security reasons anyway - then you’ll see “sponsored” or “advertising” often even without the ad it was meant for after full load of the page. so a single “sponsored” without a clear boundary showing what would be that sponsored content, does not state anything to be an ad, it is purely meaningless and the lack of such boundary always is intentional to distract the user from what he wanted and trap him somehow.

a clear thumbs-down for ‘zoho assist’ from me here just for paying for (or trying out for free or such) such an advertising type.

And in most cases ads simply beeing ads are traps too. by the very concept of ads.

around 80 % of all things i actually still wanted after i bought them were recommendations by people i met in person. 15 % are things recommended by real persons i met on the internet. around 5% are things i bought without it beeing recommded by anyone (not even an ad) things i still wanted after i bought it due to an ad are nearly not existant. ok, i have stopped viewing television in 1997, have a sticker at my postbox that forbids to throw ads in (works where i live), use dns entries to remove most ads in my network, use browsers/extension that remove most crapjunkwastelitterrubbishads and skip webpages that still show too many ads or too offensive cookieterrorbanners. i use google search only sometimes for comparison of results, but near to zero for actual searching. i feel safe to say i am not that much distracted by ads. (however open source projects and authors do get money from me on a monthly basis, where i want to support them, either direct lly sent from my bank account or indirect).

for me personally an ad just saying “you might like this” drives me away from that product, if it needs or wants an ad, i don’t want it, even more so the more it states how difficult and horrible my life would be without the product or how easy it’ll be with it, go away ad-needing products, get recommended personally by those who actually use it, not by those who want to sell it. period. there is no better ad than true recommendation and its also free, no marketing monkey needs to get payed for bs, only an actually good product is needed… and there we go what types of products actually need ads…

once in my life i discovered a product that i first explicitly not bought for a decade because of the awful ad for it, but bought it another decade later by an absentminded accident and found it to be a good product despite its awful ad. then they increased packaging/reduced the product within to cover up a price increase in trade of more waste production, so i abandoned that product again and found something cheaper more eco friendly instead, yes, the cheaper one is really not as good, but i feel better with it and especially less betrayed by the vendor, so the eco one is the better one alltogether. and also i think its better to buy products where you don’t see ads for cause this behaviour could actually fix this advertising storm in the long run, so in this way its the better choice to buy products that don’t have ads for it.

again:

An ad with an install button is always a trap, even more so when the real install follows a single misclick on it. il’d say it would be quite fair to downvote/zerostars an app for how foulish-sneaky it was positioned in the search results if it is shown like an actual result with a f’ing install button. as its advertising type is always also part of the brand and the product itself. maybe make a sports out of that, klick the clickbait install buttons only to downvote the app for beeing intrusive and deinstall it again without even starting the app once, just to train advertisers to do it right instead of wrong next time. maybe. but for security reasons better don’t do that (at least not with a device with sensitive data on it)

please do not blame users to fall for ads. advertising industry now had centuries to learn to trap users and literally thousands or millions of marketing guys, designers, psycologists, neurologists or whatever only to learn and establish new abusive ways to distract and trap users. but a user only has his own lifespan to counteract that and learn to avoid those manipulations, and he also has to do other important stuff in his life too.

please don’t blame users for beeing humans. blame the industry where they are intentionally abusive, inhumane and/or counterproductive.

we need an adblockers blockers blocker

no, what is needed is an app that helps track who benefits from thr apps that annly you most:

• ownership of companies pushing annoying ads
• management of companies pushing annoying ads
• find the connection between those and the products you maybe want to buy in shops or in internet before you buy, then instead of buying, let the app send the seller a message that you did not buy because of that connection.
• do this in numbers with lots of people and see what happens to the advertising jungle

the point is NOT buying because of advertising AND let them know it, so they can learn to improve themselves.

they wanted your data? let them have it the way you want them to.

same with any platform. ask the creator of your choice to also publish using patreon and you’ll become a member then, getting the content free of ads. better more directly pay who does the actual work, not all the big tech harvesting all the benefit inbetween.

so what maybe is needed here could be a free or even self-hostable platform that also allows payed subscriptions.

really, yt stopped to play sound on the website for me (beeing logged in), there is a banner to “activate sound” but it always disappears unclickable fast, so i searched and found webtube, an app that basically loads their website, but has one feature youtube has not: “sound” *lol

now i wonder how many of these apps really are “third” party apps and not really theirs only masked as third party for getting that gain of trust all the “others” get when it comes to big techs with their very own “public” crime records …

would be too easy for them to create some small apps, act as if those were 3rd party software but harvest that spyoil (of the 21 century) anyway.

you should definitely know what type of authentication you use (my opinion) !! the agent can hold the key forever, so if you are just not asked again when connecting once more, thats what the agent is for. however its only in ram, so stopping the process or rebooting ends that of course. if you didn’t reboot meanwhile maybe try unload all keys from it (ssh-add -D, ssh-add -L) and see what the next login is like.

btw: i use ControlMaster /ControlPath (with timeouts) to even reduce the number of passwordless logins and speed things up when running scripts or things like ansible, monitoring via ssh etc. then everything goes through the already open channel and no authentication is needed for the second thing any more, it gets really fast then.

The whole point of ssh-agent is to remember your passphrase.

replace passphrase with private key and you’re very correct.

passphrases used to login to servers using PasswordAuthentication are not stored in the agent. i might be wrong with technical details on how the private key is actually stored in RAM by the agent, but in the context of ssh passphrases that could be directly used for login to servers, saying the agent stores passphrases is at least a bit misleading.

what you want is:

• use Key authentication, not passwords
• disable passwordauthentication on the server when you have setup and secured (some sort of backup) ssh access with keys instead of passwords.
• if you always want to provide a short password for login, then don’t use an agent, i.e. unset that environment variable and check ssh_config
• give your private key a password that fits your needs (average time it shoulf take attackers to guess that password vs your time you need overall to exchange the pubkey on all your servers)
• change the privatekey every time immediately after someone might have had access to the password protected privkey file
• do not give others access to your account on your pc to not have to change your private key too often.

also an idea:

• use a token that stores the private key AND is PIN protected as in it would lock itself upon a few tries with a wrong pin. this way the “password” needed to enter for logins can be minimal while at the same time protecting the private key from beeing copied. but even then one should not let others have access to the same machine (of course not as root) or account (as user, but better not at all) as an unlocked token could also possibly be used to place a second attacker provided key on the server you wanted to protect.

all depends on the level of security you want to achieve. additional TOTP could improve security too (but beware that some authenticator providers might have “sharing” features which could compromise the TOTP token even before its first use.

My theory is that you already have something providing ssh agent service

in the past some xserver environments started an ssh-agent for you just in case of, and for some reason i don’t remember that was annoying and i disabled it to start my agent in my shell environment as i wanted it.

also a possibility is tharlt there are other agents like the gpg-agent that afaik also handles ssh keys.

but i would also look into $HOME/.ssh/config if there was something configured that matches the hostname, ip, or with wildcards* parts of it, that could interfere with key selection as the .ssh/id_rsa key should IMHO always be tried if key auth is possible and no (matching) key is known to the ssh process, that is unless there already is something configured…

not sure if a system-wide /etc/ssh/ssh_config would interfere there too, maybe have a look there too. as this behaviour seems a bit unexpected if not configured specially to do so.

usually at first you can do such, and later on, when a ceo wants more money, you then can buy that together with the new “pro” features actually nobody needs nor wants.

maybe better look for more stable solutions before they start acting like a broadcom ;-)

i am happy to have a raspberry pi setup connected to a VLAN switch, internet is behind a modem (like bridged mode) connected with ethernet to one switchport while the raspi routes everything through one tagged physical GB switchport. the setup works fine with two raspi’s and failover without tcp disconnections during an actual failover, only few seconds delay when that happens, so basically voip calls recover after seconds, streaming is not affected, while in a game a second off might be too much already, however as such hardware failures happen rarely, i am running only one of them anyway.

for firewall i am using shorewall, while for some special routing i also use unbound dns resolver (one can easily configure static results for any record) and haproxy with sni inspection for specific https routing for the rather specialized setup i have.

my wifi is done by an openwrt but i only use it for having separate wifis bridged to their own vlans.

thus this setup allows for multi-zone networks at home like a wifi for visitors with daily changing passwords and another fror chromecast or home automation, each with their own rules, hardware redundancy, special tweaking, everything that runs on gnu/linux is possible including pihole, wireguard, ddns solutions, traffic statistics, traffic shaping/QOS, traffic dumps or even SSL interception if you really want to import your own CA into your phone and see what data your phones apps (those that don’t use certificate pinning) are transfering when calling home, and much more.

however regarding ddns it sometimes feels more safe and reliable to have a somehow reserved IP that would not change. some providers offer rather cheap tunnels for this purpose. i once had a free (ipv6) tunnel at hurricane electronic (besides another one for IPv4) but now i use VMs in data centers.

i do not see any ready product to be that flexible. however to me the best ready router system seems to be openwrt, you are not bound to a hardware vendor, get security updates longer than with any commercial product, can 1:1 copy your config to a new device even if the hardware changes and has the possibility to add packages with special features to it.

“openwrt” is IMHO the most flexible ready solution for longtime use. same as “pfsense” is also very worth looking at and has some similarities to openwrt while beeing different.

calm down and see it as a joke. *ggg

would make a nice tshirt =)

woman would take care for a literal horse instead of going to therapy. i don’t see anything wrong there either.

just a horse is way more expensive, cannot be put aside for a week on vacations (could a notebook be put aside?) and one cannot make backups of horses or carry them with you when visiting friends. Horses are way more cute, though.

ich you have adhd and asperger or better, you might end up beeing trained by yourself for ignoring google’s, microsoft’s or other f’uped up so called “autocorrection” and ‘automatically’ overlook single mismatching words but recognize the sentence as a whole without actually reading it word by word. some can read entire pages with a single look on it without focusing on a a specific region or i.e. the center while still beeing able to later rephrase the content of the entire page.

1up for all with special (dis-)Abilities!!

sorry if i might repeat someones answer, i did not read everything.

it seems you want it for “work” that assumes that stability and maybe something like LTS is dort of the way to go. This also assumes older but stable packages. maybe better choose a distro that separates new features from bugfixes, this removes most of the hassle that comes with rolling release (like every single bugfix comes with two more new bugs, one removal/incompatible change of a feature that you relied on and at least one feature that cripples stability or performance whilst you cannot deactivate it… yet…)

likely there is at least some software you most likely want to update out of regular package repos, like i did for years with chromium, firefox and thunderbird using some shellscript that compared current version with latest remote to download and unpack it if needed.

however maybe some things NEED a newer system than you currently have, thus if you need such software, maybe consider to run something in VMs maybe using ssh and X11 forwarding (oh my, i still don’t use/need wayland *haha)

as for me, i like to have some things shared anyway like my emails on an IMAP store accessible from my mobile devices and some files synced across devices using nextcloud. maybe think outside the box from the beginning. no arch-like OS gives you the stability that the already years-long-hung things like debian redhat/centos offer, but be aware that some OSes might suddenly change to rolling release (like centos i believe) or include rolling-release software made by third parties without respecting their own rules about unstable/testing/stable branches and thus might cripple their stability by such decisions. better stay up to date if what you update to really is what you want.

but for stability (like at work) there is nothing more practical than ancient packages that still get security fixes.

roundabout the last 15 years or more i only reinstalled my workstation or laptop for:

• hardware problems, mostly aged disk like ssd wearlevel down (while recovery from backup or direct syncing is not reinstalling right?)
• OS becomes EOL. thats it.

if you choose to run servers and services like imap and/or nextcloud, there is some gain in quickly switching the workstation without having to clone/copy everything but only place some configs there and you’re done.

A multi-OS setup is more likely to cover “all” needs while tools like x2vnc exist and can be very handy then, i nearly forgot that i was working on two very different systems, when i had such a setup.

I would suggest to make recovery easy, maybe put everything on a raid1 and make sure you have on offsite and an offline backup with snapshots, so in case of something breaks you just need to replace hardware. thats the stability i want for the tools i work with at least.

if you want to use a rolling release OS for something work related i would suggest to make sure no one externally (their repo, package manager etc) could ever prevent you from reinstalling that exact version you had at that exact point in time (snapshots from repos install media etc). then put everything in something like ansible and try out that reapplying old snapshots is straight forward for you, then (and not earlier) i would suggest that those OSes are ok for something you consider to be as important as “work”. i tried arch linux at a time when they already stopped supporting the old installer while the “new” installer wasn’t yet ready at all for use, thus i never really got into longterm use of archlinux for something i rely on, bcause i could’nt even install the second machine with the then broken install procedure *haha

i believe one should consider to NOT tinker too much on the workstation. having to fix something you personally broke “before” beeing able to work on sth important is the opposite of awesome. better have a second machine instead, swappable harddrive or use VMs.

The exact OS is IMHO not important, i personally use devuan as it is not affected by some instability annoyances that are present in ubuntu and probably some more distros that use that same software. at work we monitor some of those bugs of that software. within ubuntu cause it creates extra hassle and we workaround those so its mostly just a buggy annoying thing visible in monitoring.