I don't see how TCP could possibly work over a unidirectional ethernet cable. Only UDP. And even then only if the higher level network code was designed to handle generic broadcast to an IP address without anything initiating the connection or any kind of handshaking, etc. My point being that virtually no software would work with such a cable unless it was specifically designed to handle that scenario.
syslog, in continuous use since the 80s. The advantage of being old is everything old is new again. I'm sure someone will reinvent syslog and sell it for millions to SCADA operators.
And yes, having done this, you do have to hard code the ARP table entries in the sender on the local lan, hence the appeal of putting a router in front of the doctored up cable such that it's the only device than need be configured with the MAC address of the syslog sink machine.
Lets just say that management has had a focus for decades on taking a sewer plant worker off the streets and having them be "productive" within a couple days despite no previous computer experience.
If you had to write JCL card decks for SCADA work, that would be fairly child proof, but it wouldn't be "user friendly" enough for anyone to buy it.
Its just engineering malpractice, pure and simple. No different than trying to claim we don't need those OSHA required safety guards because no one would ever do something stupid or malicious in the plant.
The other way to hook up to the internet, as described to me by a guy who works at a "real" chemical plant where dangerous stuff is done, is you use two separate systems both of which would have to be hacked to cause damage, plus non-SCADA automatic control.
In this scenario, where they blew the water pump up by power cycling it, there are two series control relays supplying power to the VFD and if EITHER scada system decides there is a problem with the plant or the other SCADA, that scada cuts input power to the VFD until its convinced its OK. Most VFDs like a 0-10 volt DC input to control their output, and its not all that difficult to hard wire a physical time delayed relay that says you need to output more than a volt for more than a minute to close the relay contacts connecting the VFD to the SCADA and start the pump, so the SCADA literally cannot physically turn the pump on and off more often than once per minute. You can also drive the time delayed relay off the other SCADA system, so one system decides to turn on the pump, while the other decides how fast to run the pump, and either can shut down the pump if they feel the need. Most VFDs can be configured to not allow operation outside certain limits, like drawing more than X amps where X is larger than normal but less than theoretical VFD limit, and not to turn on if a thermocouple says its too hot or a pressure gauge somewhere has an open loop signal. Similar design such that NPSH and output pressure have to be within certain limits or again, the time delayed relays open circuit the AC input to the VFDs and/or the control input to the VFDs. Finally its no heroic effort to wire up two safety bypass relays in series so that if you have control of both SCADA systems, and both independent scada systems agree, you can bypass the safety relays (and the enabling of this bypass also turns off a green light inside the safety directors office, resulting in management involvement, formal written reports and investigation, etc)
This is cheaper to install and operate than you think, because both suppliers know darn well they can be replaced individually with no real impact to plant operations, unlike the traditional "one ring to bind them all" scada design where the consultants and suppliers know they've got you over a barrel and can charge what they want.
There's this new technology that's been around since the 1800's. It's called running a ground wire. You're supposed to connect it to ANY conductive cable that spans the distance between buildings.... If you're doing this sort of stuff without following code, you shouldn't be doing it.
LOL you just described a stereotypical way to fail NEC, if you want to pass NEC for multi-building single phase, you have to run neutral and hot between buildings and have a bonded separate ground at each building. You don't "need" to run a ground between buildings and it becomes just another lightning pickup conductor in a storm, so you probably don't wanna. And there are some horrible dangerous ground loop phenomena explaining why you shouldn't.
The bld inspector, if he's any good, will give you a extreme hassle if you run a ground between buildings. Worst case scenario is having say a 200 amp service to main bld, a 100 amp subpanel in the garage, a ground and bond in each building, and a 100 amp rated ground wire between them. Two part accident occurs. The ground in the main house opens up, and you get a hot to ground short in the panel in the main panel. Maybe the ground stud fell out and shorted panel ground to hot, I donno. 200+ amps flows thru the main panel, would hit ground and blow the breaker, but the main bld ground failed an mentioned, so 200 amps trys to flow thru the 100 amp rated cable out to the garage, turning both panels and the wiring between them into a space heater and not tripping the mains, possibly. Big no no. Another excellent failure mode is a lightning strike to a grounded metal object in the garage, now appears inside the house, which is no good at all, imagine a grounded lightning rod on the garage gets hit, so the TV in the house catches fire.
This is assuming you have a subpanel in the "other" building. If its basically a long extension cord, that is very illegal / out of code / maybe grandfathered but still dumb to do, for another reason which is ground drop, imagine if the voltage drop between the literal ground in the garage and the bonded ground in the house is high enough to allow a short to real world ground (not ground wire, but "real ground) in the garage to dissipate a KW, starting a fire. Also "copper ground" and "literal dirt ground" in the garage might be enough volts different under "normal" operation to electrocute someone who touches a steel cased grounded battery charger while standing in a puddle of salt water.
In summary, expect any inspector worth having to drag you thru the coals if you try to run a ground wire between buildings. It CAN be done safely, but it is not safe / easy / cheap / obvious.
You need an industrial maint electrician to evaluate a subpanel design, not a residential 15 amp receptacle installation tech (I'm somewhere in between, I know just enough to know you really need a industrial maint electrician, one that speaks English, has a license, has heard of the (american-) NEC, etc).
Having pulled cable for a number of years I can tell you that you can pull on both fiber and copper until your eyes bulge from your skull, you aren't going to hurt it. I've seen 24-strand SMFO pulled taught by a truck driving at 10MPH with no damage to the cable (OTDR verified).
I know outside plant is infinitely tougher than inside. 20 years ago I shattered some escon by exceeding the min bend radius under a raised floor, got a talking to from the bosses boss, and this was literally dropping it in place and lightly one hand tugging for slack control. The OTDR showed the shatter right at the under floor turn so it was all me... Supposedly even just whipping escon could shatter it, donno about that.
Pull straight on single mode and you are correct you could probably hang from it quite easily. At least in the olden days, min bend radius was like 2 feet so take the same fiber and wrap it around your hand and try to hang from it and it'll shatter instantly.
Or, when these new regulations don't work, we could just do the same thing over again and pass more regulations hoping it'll work this time. And when that still doesn't work, we can always pass more.
BAU Business As Usual
Has there ever been a govt not operated according to above principles?
By making something like internet access an inalienable right, the government would be required to ensure every single person in the United States has not only access to an internet connection, but also a means of connection. The government would be required to buy people computers or smart phones. And, if a person lost, broke, or sold his computer, the government would be required to give him a new one because without a computer, he would not have inalienable right to internet access.
Almost infinitely more likely, the result would be that it would be illegal not to fund the local public library, or pass laws that only rich white middle aged people can use the library computers.
I could imagine public internet access terminals in the waiting room of a police station... I'm guessing vandalism would not be a serious issue if there's 10 heavily armed cops watching your every move.
Or something like, if you accept federal/state money to build your college computer lab, anyone off the street gets access as long as there is a computer not occupied by a student.
Another likely outcome can be seen in the example of how the federal govt gave me a M60 (yes I'm old, this is two generations obsolete of machine gun) when I was in the Army because I was the biggest weightlifter in the squad so I got the secondary duty of machinegunner (proof: ask any M60 operator what "left hand palm up every time" means). God help me, because no one else will, if I lose that weapon or intentionally disabled it. There is nothing wrong with, for example, some kind of federal vandalism charge if you smash your fedgov provided laptop.
Gangsters could use texts, email, and facebook to run their crews and order hits on witnesses.
LOL they figured out how to handle that with respect to telephones and letters decades ago. I'm not thinking merely putting it online instead of in a paper letter is going to be too mystifying.
This will mostly result in the supreme court ruling that "The Internet" is actually defined as
1) pdf.irs.gov (or pubs.irs.gov or whatever), army.mil, basically all federal level marketing websites. 2) maybe some mechanism to allow state and local government websites 3) some mechanism to allow "related" and "quisling" sites like the federal-reserve.com, and quisling sites like republican.com, democrat.com. Categorically exclude libertarian.com, etc. 4) Possibly religious websites, if they need the votes of the BBQ republicans to get it to pass (BBQ = biblethumpers, bigots, and quislings) 5) walled gardens like AOL exclusively permitted by donations to re-election campaigns of $1B annually or more
Everything else, including/.? Oh thats not legally "The Internet" anymore.
Does that mean the staff of your ISP has to be hauled into The Hague and charged with Crimes Against Humanity, for denying you of your "human rights"?
If they carefully and systemically removed access solely to certain minorities while providing better service exclusively to members of the 1%, then yeah, sounds good to me.
There are no non-monopoly ISPs in my area, thats they price they pay for the government enforcing a monopoly. If they wanted a free market, they should have paid the govt for one instead of paying the govt for a legally enforced non-free market.
You can't have an inalienable right to someone else's property.
Luckily its about inalienable ACCESS to someone elses property.
We're not talking about you having a right to own my suburban house without a valid sales contract or whatver. We're talking about you having the right to access my house, without the local PD arresting you enroute because they don't like black people in my lilly white city and DWB (driving while black) is a local municipal offense.
Every single law that is passed has one thing in common, it limits your rights (which, again, is a good thing, felons with guns, etc..).
Why is it good that a guy who shared a mp3 file online, and a guy who cheated on his taxes at age 20, can't go deer hunting at age 65? You make a good point, then epic fail the same exact point.
Why all the hate toward performance improvement? If the genetic marker they were searching for indicated likely knee trouble, so they could advise kids with weak knees to take up no-impact swimming, I bet there wouldn't be the 1984 style "two minutes hate". Oh your son has the genetic marker for unrepairable shoulder injury? I see we have our next track and field long distance runner candidate, etc.
I could see that being abused, much like the XX chromosome results in speaking dolls that say "math is hard". But sports related health and safety results would probably not be hated as much as sports related performance results.
Why does every single kid have to play sports now? It seems like every precious little snowflake HAS to be some wannabe sports superstar nowadays.
Its an acknowledgement that all other "stretch goals" have been permanently closed off to the point that even bothering to try is pointless. Start a business? Ha Ha not for you. Get a stable middle class job with benefits? Ha Ha not for you. Intentionally become a stay at home parent? Ha Ha not for you. Succeed in the arts? Ha Ha not for you. The only stretch goal left is pro sports, so thats the only one you still see.
I distinctly recall seeing a featurelist / marketing PR material around '93 or '94 and I got all excited and ready to buy until I saw the $995 pricetag. No not $899 or $999 or $1000, exactly $995. On the other hand I could have gone 386BSD but then spent $995 on the rather narrow compatible hardware list, I remember my desktop would not have been able to boot 386BSD at that time, but maybe I could have hacked it into working. In the end I downloaded a set of linux SLS floppy disk sets from a local BBS which worked perfectly on my generic beige box 386. Along came Debian, at least for me, in around 96 or 97. At least that's how I recall it.
True, didn't think of that. Anyone know what the price diffference is between something like Cat. 6 and fiber?
Darn near zero. Seriously. $1 to $3 foot indoors for both, outdoors is usually strictly quote basis.
Again your experience may vary but the other difference is cat5/6 usually is terminated for "free" as part of the deal and fiber is usually terminated for like $25 per connector (in other words $50 flat fee added cost for one complete working cable). Also some CPE needs weird connectors, so many contractors will pull the fiber and let you figure out your bizarre escon-fiber or whatever, if you aren't using something standard that they can terminate.
Some fiber places want to charge extra to OTDR verify, some even try to charge extra to give the results to you.
Get a couple bids.
Stereotypes: Electricians do a great job of grounding aerial leader line and pull so hard they damage both fiber and cat5 (cat5 isn't exactly the 0000 gauge entrance facility they're used to). Also electricians have no comprehension of EMI/RFI and will run cat5 wrapped around the dirtiest industrial power line and light units. Electricians are also stereotypically poor at terminating. Geniuses at pulling cable and fishing and whats best described as "stupid conduit tricks", not so good at termination.. The "LAN/WAN/server" guys generally cannot waterproof outdoors to save their life, assume it'll leak if they get involved. The vertical market cable contractors who do one thing and one thing only are not terribly mentally flexible and freak out if you want to do anything other than bog standard cubicle wiring. All stereotypes have an element of truth and might be useful to recall when negotiating your contracts.
Gives you something to do when it rains. Been there, done that. Not just directly, but indirectly, now a days you internet search for the closest stir fry place or whatever. Oh look we ran out of propane and the onsite general store sells one pound cans for $10 a piece and walmart 2 miles away sells them for $2 and we could pick up some more food at the community grocery store.. road trip!
Much as its nice to momentarily disconnect and go on a walk in a park, sometimes on vacation its nice to momentarily reconnect.
My parents mostly used it to upload pictures. "see, he caught a fish" that type of thing.
This is a quasi-State Park, so money is always an issue, but there is enough squawk from the user community that a modest budget might be approved.
because they can pull money from the marketing budget first as a lure to get people to come as a checkbox feature, secondly because you can install $100 wifi webcams at the "cool places" (pool, lakeshore, whatever) so visitors from the UK feel comfortably spied upon and the promotional web page can have "click here to see the scenic lakeshore live!" buttons.
also they can pull a little money from the security budget, because the webcams can monitor boring yet important locations like the bar's cash register, the general store cash register, the service entrance, the equipment shed (the $20K nuclear propelled lawnmower, tanks of gas for the mower, etc)
Use the perimeter fence with directional antennae pointed in. If your facility is so huge that the perimeter can't reach the center no matter how fancy the AP and antennae, that's why you have fiber runs to the usually centrally located main buildings. The pool has a fence ringed with antennae pointing outward. The stereotypical bar/restaurant/general store at the center is ringed with antennae pointed out. The stereotypical office / front gate at the entrance is ringed with antennae.
In summary, if its a fence, its got a directional antenna pointed toward the customers. If its got a roof, its got antennas pointed outward.
My parents did quite a bit of RVing... population density is more "urban" than "suburban" its an unusual park where you have to walk more than 500 feet to find a "structure" of some sort or a border fence.
No, Linux "succeeded" because BSD was frozen out of the market by AT&T at a crucial time.
Having lived thru that, I'd disagree. BSD was way too elitist, "oh, you wanna run a BSD flavor on a 386? Oh how cute, but you suck. We all use PDP11s here. We'll let you try, if you promise not to pester us with bug reports and things, now here's a nickel kid, go buy youself a real computer like a VAX.". Minix wanted you to buy a book and the hardware support was kinda limited so its unclear if you'd be wasting your money or not, which in the pre-amazon days meant finding out the ISBN and pestering an intimidating bookstore clerk to order it for you and then rolling the dice once it arrived. Linux? That was just some downloads off the local BBSes and/or early internet provider link, and everyone was mostly friendly most of the time, unlike the *BSD guys.
...(despite the apparent cookie-cutter approach to movies)...More likely to be of use in the board room or training than cranking out the latest Dreamworks flick.
Perhaps its aimed at "shovelware" kids cartoons rather than movies... How high end does "scooby doo" animation have to be to get kids to watch?
Slashdot Mirror
I don't see how TCP could possibly work over a unidirectional ethernet cable. Only UDP. And even then only if the higher level network code was designed to handle generic broadcast to an IP address without anything initiating the connection or any kind of handshaking, etc. My point being that virtually no software would work with such a cable unless it was specifically designed to handle that scenario.
syslog, in continuous use since the 80s. The advantage of being old is everything old is new again. I'm sure someone will reinvent syslog and sell it for millions to SCADA operators.
And yes, having done this, you do have to hard code the ARP table entries in the sender on the local lan, hence the appeal of putting a router in front of the doctored up cable such that it's the only device than need be configured with the MAC address of the syslog sink machine.
How many children know how Simatic works?
Lets just say that management has had a focus for decades on taking a sewer plant worker off the streets and having them be "productive" within a couple days despite no previous computer experience.
If you had to write JCL card decks for SCADA work, that would be fairly child proof, but it wouldn't be "user friendly" enough for anyone to buy it.
Its just engineering malpractice, pure and simple. No different than trying to claim we don't need those OSHA required safety guards because no one would ever do something stupid or malicious in the plant.
The other way to hook up to the internet, as described to me by a guy who works at a "real" chemical plant where dangerous stuff is done, is you use two separate systems both of which would have to be hacked to cause damage, plus non-SCADA automatic control.
In this scenario, where they blew the water pump up by power cycling it, there are two series control relays supplying power to the VFD and if EITHER scada system decides there is a problem with the plant or the other SCADA, that scada cuts input power to the VFD until its convinced its OK. Most VFDs like a 0-10 volt DC input to control their output, and its not all that difficult to hard wire a physical time delayed relay that says you need to output more than a volt for more than a minute to close the relay contacts connecting the VFD to the SCADA and start the pump, so the SCADA literally cannot physically turn the pump on and off more often than once per minute. You can also drive the time delayed relay off the other SCADA system, so one system decides to turn on the pump, while the other decides how fast to run the pump, and either can shut down the pump if they feel the need. Most VFDs can be configured to not allow operation outside certain limits, like drawing more than X amps where X is larger than normal but less than theoretical VFD limit, and not to turn on if a thermocouple says its too hot or a pressure gauge somewhere has an open loop signal. Similar design such that NPSH and output pressure have to be within certain limits or again, the time delayed relays open circuit the AC input to the VFDs and/or the control input to the VFDs. Finally its no heroic effort to wire up two safety bypass relays in series so that if you have control of both SCADA systems, and both independent scada systems agree, you can bypass the safety relays (and the enabling of this bypass also turns off a green light inside the safety directors office, resulting in management involvement, formal written reports and investigation, etc)
This is cheaper to install and operate than you think, because both suppliers know darn well they can be replaced individually with no real impact to plant operations, unlike the traditional "one ring to bind them all" scada design where the consultants and suppliers know they've got you over a barrel and can charge what they want.
There's this new technology that's been around since the 1800's. It's called running a ground wire. You're supposed to connect it to ANY conductive cable that spans the distance between buildings .... If you're doing this sort of stuff without following code, you shouldn't be doing it.
LOL you just described a stereotypical way to fail NEC, if you want to pass NEC for multi-building single phase, you have to run neutral and hot between buildings and have a bonded separate ground at each building. You don't "need" to run a ground between buildings and it becomes just another lightning pickup conductor in a storm, so you probably don't wanna. And there are some horrible dangerous ground loop phenomena explaining why you shouldn't.
The bld inspector, if he's any good, will give you a extreme hassle if you run a ground between buildings. Worst case scenario is having say a 200 amp service to main bld, a 100 amp subpanel in the garage, a ground and bond in each building, and a 100 amp rated ground wire between them. Two part accident occurs. The ground in the main house opens up, and you get a hot to ground short in the panel in the main panel. Maybe the ground stud fell out and shorted panel ground to hot, I donno. 200+ amps flows thru the main panel, would hit ground and blow the breaker, but the main bld ground failed an mentioned, so 200 amps trys to flow thru the 100 amp rated cable out to the garage, turning both panels and the wiring between them into a space heater and not tripping the mains, possibly. Big no no. Another excellent failure mode is a lightning strike to a grounded metal object in the garage, now appears inside the house, which is no good at all, imagine a grounded lightning rod on the garage gets hit, so the TV in the house catches fire.
This is assuming you have a subpanel in the "other" building. If its basically a long extension cord, that is very illegal / out of code / maybe grandfathered but still dumb to do, for another reason which is ground drop, imagine if the voltage drop between the literal ground in the garage and the bonded ground in the house is high enough to allow a short to real world ground (not ground wire, but "real ground) in the garage to dissipate a KW, starting a fire. Also "copper ground" and "literal dirt ground" in the garage might be enough volts different under "normal" operation to electrocute someone who touches a steel cased grounded battery charger while standing in a puddle of salt water.
In summary, expect any inspector worth having to drag you thru the coals if you try to run a ground wire between buildings. It CAN be done safely, but it is not safe / easy / cheap / obvious.
You need an industrial maint electrician to evaluate a subpanel design, not a residential 15 amp receptacle installation tech (I'm somewhere in between, I know just enough to know you really need a industrial maint electrician, one that speaks English, has a license, has heard of the (american-) NEC, etc).
Having pulled cable for a number of years I can tell you that you can pull on both fiber and copper until your eyes bulge from your skull, you aren't going to hurt it. I've seen 24-strand SMFO pulled taught by a truck driving at 10MPH with no damage to the cable (OTDR verified).
I know outside plant is infinitely tougher than inside. 20 years ago I shattered some escon by exceeding the min bend radius under a raised floor, got a talking to from the bosses boss, and this was literally dropping it in place and lightly one hand tugging for slack control. The OTDR showed the shatter right at the under floor turn so it was all me... Supposedly even just whipping escon could shatter it, donno about that.
Pull straight on single mode and you are correct you could probably hang from it quite easily. At least in the olden days, min bend radius was like 2 feet so take the same fiber and wrap it around your hand and try to hang from it and it'll shatter instantly.
Or, when these new regulations don't work, we could just do the same thing over again and pass more regulations hoping it'll work this time. And when that still doesn't work, we can always pass more.
BAU Business As Usual
Has there ever been a govt not operated according to above principles?
(proof: ask any M60 operator what "left hand palm up every time" means)
It means its waaay too early in the morning for this ... right hand obviously.
By making something like internet access an inalienable right, the government would be required to ensure every single person in the United States has not only access to an internet connection, but also a means of connection. The government would be required to buy people computers or smart phones. And, if a person lost, broke, or sold his computer, the government would be required to give him a new one because without a computer, he would not have inalienable right to internet access.
Almost infinitely more likely, the result would be that it would be illegal not to fund the local public library, or pass laws that only rich white middle aged people can use the library computers.
I could imagine public internet access terminals in the waiting room of a police station... I'm guessing vandalism would not be a serious issue if there's 10 heavily armed cops watching your every move.
Or something like, if you accept federal/state money to build your college computer lab, anyone off the street gets access as long as there is a computer not occupied by a student.
Another likely outcome can be seen in the example of how the federal govt gave me a M60 (yes I'm old, this is two generations obsolete of machine gun) when I was in the Army because I was the biggest weightlifter in the squad so I got the secondary duty of machinegunner (proof: ask any M60 operator what "left hand palm up every time" means). God help me, because no one else will, if I lose that weapon or intentionally disabled it. There is nothing wrong with, for example, some kind of federal vandalism charge if you smash your fedgov provided laptop.
Gangsters could use texts, email, and facebook to run their crews and order hits on witnesses.
LOL they figured out how to handle that with respect to telephones and letters decades ago. I'm not thinking merely putting it online instead of in a paper letter is going to be too mystifying.
This will mostly result in the supreme court ruling that "The Internet" is actually defined as
1) pdf.irs.gov (or pubs.irs.gov or whatever), army.mil, basically all federal level marketing websites.
2) maybe some mechanism to allow state and local government websites
3) some mechanism to allow "related" and "quisling" sites like the federal-reserve.com, and quisling sites like republican.com, democrat.com. Categorically exclude libertarian.com, etc.
4) Possibly religious websites, if they need the votes of the BBQ republicans to get it to pass (BBQ = biblethumpers, bigots, and quislings)
5) walled gardens like AOL exclusively permitted by donations to re-election campaigns of $1B annually or more
Everything else, including /.? Oh thats not legally "The Internet" anymore.
Does that mean the staff of your ISP has to be hauled into The Hague and charged with Crimes Against Humanity, for denying you of your "human rights"?
If they carefully and systemically removed access solely to certain minorities while providing better service exclusively to members of the 1%, then yeah, sounds good to me.
There are no non-monopoly ISPs in my area, thats they price they pay for the government enforcing a monopoly. If they wanted a free market, they should have paid the govt for one instead of paying the govt for a legally enforced non-free market.
You can't have an inalienable right to someone else's property.
Luckily its about inalienable ACCESS to someone elses property.
We're not talking about you having a right to own my suburban house without a valid sales contract or whatver. We're talking about you having the right to access my house, without the local PD arresting you enroute because they don't like black people in my lilly white city and DWB (driving while black) is a local municipal offense.
Every single law that is passed has one thing in common, it limits your rights (which, again, is a good thing, felons with guns, etc..).
Why is it good that a guy who shared a mp3 file online, and a guy who cheated on his taxes at age 20, can't go deer hunting at age 65? You make a good point, then epic fail the same exact point.
Why all the hate toward performance improvement? If the genetic marker they were searching for indicated likely knee trouble, so they could advise kids with weak knees to take up no-impact swimming, I bet there wouldn't be the 1984 style "two minutes hate". Oh your son has the genetic marker for unrepairable shoulder injury? I see we have our next track and field long distance runner candidate, etc.
I could see that being abused, much like the XX chromosome results in speaking dolls that say "math is hard". But sports related health and safety results would probably not be hated as much as sports related performance results.
Why does every single kid have to play sports now? It seems like every precious little snowflake HAS to be some wannabe sports superstar nowadays.
Its an acknowledgement that all other "stretch goals" have been permanently closed off to the point that even bothering to try is pointless. Start a business? Ha Ha not for you. Get a stable middle class job with benefits? Ha Ha not for you. Intentionally become a stay at home parent? Ha Ha not for you. Succeed in the arts? Ha Ha not for you. The only stretch goal left is pro sports, so thats the only one you still see.
And 1024, and 1337
I thought it was all about complimentary copy advertorials? They actually still have reporters?
BSD/386 was an expensive commercial product
I distinctly recall seeing a featurelist / marketing PR material around '93 or '94 and I got all excited and ready to buy until I saw the $995 pricetag. No not $899 or $999 or $1000, exactly $995. On the other hand I could have gone 386BSD but then spent $995 on the rather narrow compatible hardware list, I remember my desktop would not have been able to boot 386BSD at that time, but maybe I could have hacked it into working. In the end I downloaded a set of linux SLS floppy disk sets from a local BBS which worked perfectly on my generic beige box 386. Along came Debian, at least for me, in around 96 or 97. At least that's how I recall it.
True, didn't think of that. Anyone know what the price diffference is between something like Cat. 6 and fiber?
Darn near zero. Seriously. $1 to $3 foot indoors for both, outdoors is usually strictly quote basis.
Again your experience may vary but the other difference is cat5/6 usually is terminated for "free" as part of the deal and fiber is usually terminated for like $25 per connector (in other words $50 flat fee added cost for one complete working cable). Also some CPE needs weird connectors, so many contractors will pull the fiber and let you figure out your bizarre escon-fiber or whatever, if you aren't using something standard that they can terminate.
Some fiber places want to charge extra to OTDR verify, some even try to charge extra to give the results to you.
Get a couple bids.
Stereotypes: Electricians do a great job of grounding aerial leader line and pull so hard they damage both fiber and cat5 (cat5 isn't exactly the 0000 gauge entrance facility they're used to). Also electricians have no comprehension of EMI/RFI and will run cat5 wrapped around the dirtiest industrial power line and light units. Electricians are also stereotypically poor at terminating. Geniuses at pulling cable and fishing and whats best described as "stupid conduit tricks", not so good at termination.. The "LAN/WAN/server" guys generally cannot waterproof outdoors to save their life, assume it'll leak if they get involved. The vertical market cable contractors who do one thing and one thing only are not terribly mentally flexible and freak out if you want to do anything other than bog standard cubicle wiring. All stereotypes have an element of truth and might be useful to recall when negotiating your contracts.
Gives you something to do when it rains. Been there, done that. Not just directly, but indirectly, now a days you internet search for the closest stir fry place or whatever. Oh look we ran out of propane and the onsite general store sells one pound cans for $10 a piece and walmart 2 miles away sells them for $2 and we could pick up some more food at the community grocery store.. road trip!
Much as its nice to momentarily disconnect and go on a walk in a park, sometimes on vacation its nice to momentarily reconnect.
My parents mostly used it to upload pictures. "see, he caught a fish" that type of thing.
This is a quasi-State Park, so money is always an issue, but there is enough squawk from the user community that a modest budget might be approved.
because they can pull money from the marketing budget first as a lure to get people to come as a checkbox feature, secondly because you can install $100 wifi webcams at the "cool places" (pool, lakeshore, whatever) so visitors from the UK feel comfortably spied upon and the promotional web page can have "click here to see the scenic lakeshore live!" buttons.
also they can pull a little money from the security budget, because the webcams can monitor boring yet important locations like the bar's cash register, the general store cash register, the service entrance, the equipment shed (the $20K nuclear propelled lawnmower, tanks of gas for the mower, etc)
Use the perimeter fence with directional antennae pointed in. If your facility is so huge that the perimeter can't reach the center no matter how fancy the AP and antennae, that's why you have fiber runs to the usually centrally located main buildings. The pool has a fence ringed with antennae pointing outward. The stereotypical bar/restaurant/general store at the center is ringed with antennae pointed out. The stereotypical office / front gate at the entrance is ringed with antennae.
In summary, if its a fence, its got a directional antenna pointed toward the customers. If its got a roof, its got antennas pointed outward.
My parents did quite a bit of RVing... population density is more "urban" than "suburban" its an unusual park where you have to walk more than 500 feet to find a "structure" of some sort or a border fence.
Why fiber and not cooper?
Lightning. Za Pow!
Never run a piece of copper from one building to another if you can at all avoid it.
Yes, for only $995 at least in early '94. Complete non-starter. Its like asking why IBM zOS isn't taking over the world of computing today...
No, Linux "succeeded" because BSD was frozen out of the market by AT&T at a crucial time.
Having lived thru that, I'd disagree. BSD was way too elitist, "oh, you wanna run a BSD flavor on a 386? Oh how cute, but you suck. We all use PDP11s here. We'll let you try, if you promise not to pester us with bug reports and things, now here's a nickel kid, go buy youself a real computer like a VAX.". Minix wanted you to buy a book and the hardware support was kinda limited so its unclear if you'd be wasting your money or not, which in the pre-amazon days meant finding out the ISBN and pestering an intimidating bookstore clerk to order it for you and then rolling the dice once it arrived. Linux? That was just some downloads off the local BBSes and/or early internet provider link, and everyone was mostly friendly most of the time, unlike the *BSD guys.
Perhaps its aimed at "shovelware" kids cartoons rather than movies... How high end does "scooby doo" animation have to be to get kids to watch?