The main thing with a cantenna is to have a 1/4 wavelength distance between the antenna in the can and the back wall and the antenna in the can shall be a 1/4 wavelength. pin.
A Leatherman (or similar) is a good back-up but can never really do the work of a real tool. Especially if you have a day when you change items in computer racks you will certainly want to have the real thing.
I agree - real tools are a lot better. A dedicated torx screwdriver is better than a bits version, but you should have a bits screwdriver too.
And then limit the access to the tools so only a few trusted persons have them. Painting them pink or something is a good addition to make them stay at home.
A cheap DMM (able to take DC/AC Volt/Amp/Ohm) and a simple TP cable tester will be good to have too. No need to get the high level equipment, cheap stuff is good enough.
And a flashlight - there will always be that pesky hard to read text somewhere on a device that you can't read without the right light.
You may have a public 800 number too, but have a login/pin code combination on it provided to paying customers. There are solutions around to allow for a decently secure solution - like sending a text message with a one-time PIN in order to gain access. That way you cut off most of the annoying callers.
And a 900-number is the way to go for those one time support cases.
In addition to this you can have a web interface for people to report cases on where you can call back if needed. Some people are actually just trying to report bugs on the product from time to time, so a channel for them to do that would be useful.
Or you can have two 900 numbers - normal and express. Those in a tight situation will certainly appreciate a way to quickly bypass a queue.
Of course you won't get rid of the obnoxious callers even on a 900 number but then at least you get paid for listening to them.
Ad makers should actually ask themselves - why have we created a need for ad blocking software? When they have the answer and acted upon it then the ad blocking software is no longer needed.
Ariane 5 has been around for a rather long time now and it's a well tried launcher. And it has been improved during the years since the first launch in 1996. And considering that it's rated for up to about 21 tons to low earth orbit or about 10 tons to geostationary I would say it's a decent concept. Of course - they have had their failures, but when you look at the concept of space rockets it's a question of shaving weight as much as possible, so no wonder if things fails now and then when the margin for error is small.
That said - I would still consider that the Ariane 5 may not be entirely suitable for launching a capsule, even if it has the capacity to take the weight. There may be many modifications needed in order to handle a crewed capsule in a safe and reliable manner. I suspect that a three stage rocket would be more suitable compared to the two stages that the Ariane 5 has. Not that a Saturn V rocket capacity with 120 tons to low earth orbit is needed unless the Moon is the target, but for closer to earth activities it may be good to have something that can lift a bit more than just a crew capsule.
I agree - a blank slate is the best, in the real world you have to be creative.
Just state that they should have a picture with an animal, a beverage and a well-known landmark and that some types of transitions and effects are expected. But then also state that they aren't limited to that but can do something completely different as long as they have a certain number of effects in the image.
And to make sure that they don't copy an existing image they should provide the source images used too.
It's of course easy to invent your own exercises, but even better would be to have the students to use pictures they have taken themselves to be used in the exercise. And almost everyone has a mobile phone with a camera these days so that would be a minor problem. Or provide a collection of pictures that can be used in the exercise and let them play around.
Just state the basic points, then let each student do what they can and let them rate each others results. Don't force the students to use the same template, let them have their artistic freedom.
And isn't the whole point behind the exercise to learn how to use Photoshop and other tools - not to try to mimic a creation?
And the 15C (which I have one of) would be great to get back. Small enough to keep around and sufficient for some scientific work. At least they have the physical tools still because the 12C is still on the market. so it wouldn't be hard to revive that.
At least they work as long as you run a common OS, but if you try to run things like QNX it may be worth to look around. I have tried QNX under Vmware and it was really slow.
Modem lines are so yesterday - an access point put away somewhere configured to not advertise it's name would be a great hole.
Don't forget that some printers can communicate over wireless connection too and they can be a great attack vector. Add to it that it's easy to set up a VPN tunnel. And if it's a tunnel over HTTPS it's not easy to detect - especially if the traffic is low.
So it will be a pain in the butt if you want to stay safe. Lock each client to receive IP address over DHCP depending on MAC address. That way every client will get a first level of authorization. Change the IP address series if a breach occurs or is suspected - that will cause rouge access points to lose connection. Set the printers on a separate network segment so if they are compromised the only stuff that can be accessed is what's going to be the stuff that's printed and then - printers doesn't need to access the internet outside the site anyway, which makes it harder to utilize a compromised printer.
Using internet proxies are useful too - you can add filters in the proxy server to shut out traffic to unwanted sites. Whitelisting, greylisting and blacklisting should be the way - some sites can be whitelisted like news sites, greylisting for sites like Facebook and blacklisting of porn sites.
Using Wireshark to look for unusual traffic may work, but it's very hard on the networks today to decide if traffic is really unusual or if it's just some application that runs some protocol of it's own. Often printers runs many protocols at once by default, like IP, IPX and AppleTalk.
The primary thing that you need to consider - how much time will it take to inspect and correct compared to a clean re-install. It may be cheaper and faster to do a clean re-install.
Which means that you run it on one single physical server and if you have an admin that's going bad that has access to that server you are really into the crapper.
Same thing if the hosting server itself gets compromised.
The actions necessary depends on what you mean with "underperforming". If that person didn't do much more than sitting in a corner playing games I would say that there's not much to do, but if it was a person taking shortcuts you need to figure out all traces from that person and remove them one by one. And you can't be sure if that was a skilled person.
If it's bad enough you should treat it as a bad virus outbreak and build a completely new system in parallel with the old and move the business information to that system and cut off the damaged system from the net. It's a dirty and tedious job but someone needs to do it.
This also highlights the need of segmenting the network into different segments, one for sales, another for HR, a third for management and then one or more for the operations so that if one segment is compromised you don't run the risk of having everything exposed. Of course - this goes against the process of using virtualized servers since you can't do physical segmentation on a virtual machine.
No need to fire him, but maybe look at a system like Drupal or something along the same path. Especially since this is a "not for profit" solution it should pay off to get a fresh start using some kind of open system.
Then the big work would start to migrate the data from the old system to a new and keep the old system in a frozen readonly state until you are sure that you don't need anything from it anymore.
Slashdot Mirror
And invest it into heavier computer equipment.
Imagine the headache for the raiders if the average computer weighs half a ton.
I would say that an antenna like a cantenna would be the thing to look at.
Here's an instruction video too.
The main thing with a cantenna is to have a 1/4 wavelength distance between the antenna in the can and the back wall and the antenna in the can shall be a 1/4 wavelength. pin.
Here's also a good site with another cantenna calculator.
And when you make your cantenna you should allow for fine tuning of the position and length of the antenna pin inside the can.
A Leatherman (or similar) is a good back-up but can never really do the work of a real tool. Especially if you have a day when you change items in computer racks you will certainly want to have the real thing.
I agree - real tools are a lot better. A dedicated torx screwdriver is better than a bits version, but you should have a bits screwdriver too.
And then limit the access to the tools so only a few trusted persons have them. Painting them pink or something is a good addition to make them stay at home.
A cheap DMM (able to take DC/AC Volt/Amp/Ohm) and a simple TP cable tester will be good to have too. No need to get the high level equipment, cheap stuff is good enough.
And a flashlight - there will always be that pesky hard to read text somewhere on a device that you can't read without the right light.
You may have a public 800 number too, but have a login/pin code combination on it provided to paying customers. There are solutions around to allow for a decently secure solution - like sending a text message with a one-time PIN in order to gain access. That way you cut off most of the annoying callers.
And a 900-number is the way to go for those one time support cases.
In addition to this you can have a web interface for people to report cases on where you can call back if needed. Some people are actually just trying to report bugs on the product from time to time, so a channel for them to do that would be useful.
Or you can have two 900 numbers - normal and express. Those in a tight situation will certainly appreciate a way to quickly bypass a queue.
Of course you won't get rid of the obnoxious callers even on a 900 number but then at least you get paid for listening to them.
Is to go the expensive way and purchase a naked license of the OS.
That way I can get a clean machine without crapware.
Ad makers should actually ask themselves - why have we created a need for ad blocking software? When they have the answer and acted upon it then the ad blocking software is no longer needed.
Use dielectric cooking - that's the true geek way.
Ariane 5 has been around for a rather long time now and it's a well tried launcher. And it has been improved during the years since the first launch in 1996. And considering that it's rated for up to about 21 tons to low earth orbit or about 10 tons to geostationary I would say it's a decent concept. Of course - they have had their failures, but when you look at the concept of space rockets it's a question of shaving weight as much as possible, so no wonder if things fails now and then when the margin for error is small.
That said - I would still consider that the Ariane 5 may not be entirely suitable for launching a capsule, even if it has the capacity to take the weight. There may be many modifications needed in order to handle a crewed capsule in a safe and reliable manner. I suspect that a three stage rocket would be more suitable compared to the two stages that the Ariane 5 has. Not that a Saturn V rocket capacity with 120 tons to low earth orbit is needed unless the Moon is the target, but for closer to earth activities it may be good to have something that can lift a bit more than just a crew capsule.
Only workaround would be to require everyone to have an IQ of 100 or above to be permitted to procreate.
But that's not politically correct.
I agree - a blank slate is the best, in the real world you have to be creative.
Just state that they should have a picture with an animal, a beverage and a well-known landmark and that some types of transitions and effects are expected. But then also state that they aren't limited to that but can do something completely different as long as they have a certain number of effects in the image.
And to make sure that they don't copy an existing image they should provide the source images used too.
Let them grade each other. Of course you will need to anonymize the submissions so that only the creator knows that the picture is his.
It's of course easy to invent your own exercises, but even better would be to have the students to use pictures they have taken themselves to be used in the exercise. And almost everyone has a mobile phone with a camera these days so that would be a minor problem. Or provide a collection of pictures that can be used in the exercise and let them play around.
Just state the basic points, then let each student do what they can and let them rate each others results. Don't force the students to use the same template, let them have their artistic freedom.
And isn't the whole point behind the exercise to learn how to use Photoshop and other tools - not to try to mimic a creation?
Suddenly I wanted a mod option "AWESOME!!!" to use here and now!
And the 15C (which I have one of) would be great to get back. Small enough to keep around and sufficient for some scientific work. At least they have the physical tools still because the 12C is still on the market. so it wouldn't be hard to revive that.
Current collection:
HP15C
HP41CV
HP28S
Have HP done something lately?
Wouldn't this be a case for a class action suit?
At least they work as long as you run a common OS, but if you try to run things like QNX it may be worth to look around. I have tried QNX under Vmware and it was really slow.
EDIT /TPU
Just look at this report: Cross-VM Side Channels and Their Use to Extract Private Keys
Pretty clear that the virtualized server aren't as safe as physically separated servers.
Modem lines are so yesterday - an access point put away somewhere configured to not advertise it's name would be a great hole.
Don't forget that some printers can communicate over wireless connection too and they can be a great attack vector. Add to it that it's easy to set up a VPN tunnel. And if it's a tunnel over HTTPS it's not easy to detect - especially if the traffic is low.
So it will be a pain in the butt if you want to stay safe. Lock each client to receive IP address over DHCP depending on MAC address. That way every client will get a first level of authorization. Change the IP address series if a breach occurs or is suspected - that will cause rouge access points to lose connection. Set the printers on a separate network segment so if they are compromised the only stuff that can be accessed is what's going to be the stuff that's printed and then - printers doesn't need to access the internet outside the site anyway, which makes it harder to utilize a compromised printer.
Using internet proxies are useful too - you can add filters in the proxy server to shut out traffic to unwanted sites. Whitelisting, greylisting and blacklisting should be the way - some sites can be whitelisted like news sites, greylisting for sites like Facebook and blacklisting of porn sites.
Using Wireshark to look for unusual traffic may work, but it's very hard on the networks today to decide if traffic is really unusual or if it's just some application that runs some protocol of it's own. Often printers runs many protocols at once by default, like IP, IPX and AppleTalk.
The primary thing that you need to consider - how much time will it take to inspect and correct compared to a clean re-install. It may be cheaper and faster to do a clean re-install.
Which means that you run it on one single physical server and if you have an admin that's going bad that has access to that server you are really into the crapper.
Same thing if the hosting server itself gets compromised.
The actions necessary depends on what you mean with "underperforming". If that person didn't do much more than sitting in a corner playing games I would say that there's not much to do, but if it was a person taking shortcuts you need to figure out all traces from that person and remove them one by one. And you can't be sure if that was a skilled person.
If it's bad enough you should treat it as a bad virus outbreak and build a completely new system in parallel with the old and move the business information to that system and cut off the damaged system from the net. It's a dirty and tedious job but someone needs to do it.
This also highlights the need of segmenting the network into different segments, one for sales, another for HR, a third for management and then one or more for the operations so that if one segment is compromised you don't run the risk of having everything exposed. Of course - this goes against the process of using virtualized servers since you can't do physical segmentation on a virtual machine.
And then you can make a nice little fire when the server gets too old.
No need to fire him, but maybe look at a system like Drupal or something along the same path. Especially since this is a "not for profit" solution it should pay off to get a fresh start using some kind of open system.
Then the big work would start to migrate the data from the old system to a new and keep the old system in a frozen readonly state until you are sure that you don't need anything from it anymore.