http://www.givewell.org/ rigorously evaluates charities and their top recommendations benefit poor people. http://www.thelifeyoucansave.o... has a longer list of recommended charities. Both websites are part of the effective altruism movement which applies evidence and reason to determine the most effective ways to improve the world.
Does anyone use Libsafe
This library protects against buffer overflow vulnerabilities, and is very easy to install (basically you just install the RPM and you're done)
If more sysadmins installed this, perhaps we wouldn't have problems with so many Linux compromises? Of course it's no substitute for patching, but seems like a good additional security measure.
The exploitation of buffer overflow and format string vulnerabilities in process stacks are a significant portion of security attacks. 'libsafe' is based on a middleware software layer that intercepts all function calls made to library functions known to be vulnerable. A substitute version of the corresponding function implements the original function in a way that ensures that any buffer overflows are contained within the current stack frame, which prevents attackers from overwriting the return address and hijacking the control flow of a running program.
The true benefit of using libsafe is protection against future attacks on programs not yet known to be vulnerable. The performance overhead of libsafe is negligible, it does not require changes to the OS, it works with existing binary programs, and it does not need access to the source code of defective programs, or recompilation or off-line processing of binaries.
Here's another Perl Module for looking up IP address based on country. This one requires a C library, and there is a slower one that is pure perl here. The basic IP to country database is free and updated monthly.
OSDN has done a lot for the Open Source community. They have provided Sourceforge, providing free hosting and development environment for over Open Source 35,000 projects. Signing up for Slashdot is a great way of supporting OSDN, and helping to ensure that Sourceforge and other OSDN projects stay alive.
LPABO and LPAKO are public domain Linear Programming packages
from the Seoul National University. LPABO
uses an interior-point method, while LPAKO uses the simplex method.
I've looked at several other free LP solvers, and this package looks like it is fairly fast and
robust.
I wasn't able to find a license for these packages. Maybe you could ask the author about releasing their software under the GPL or another Free Software license?
QLITech has a nice line of Linux laptops. I bought the Amethyst 20U from Tuxtops, now the King System, and I'm very happy with it. IBM also sells laptops running linux if you look around. Don't pay the Microsoft tax!
I'm interested in creating an open source
project to locate the country of the user based
on the IP address. One useful application would be to locate the nearest download mirror for a ftp site.
If you are interested in this project, or know of a similar open-source project already under way, please email me.
I recently bought my laptop (Topaz 8400) from http://www.tuxtops.com
with RedHat 6.2 pre-installed and I love it.
It couldn't be easier and you don't have to pay the Microsoft tax.
Slashdot Mirror
http://www.givewell.org/ rigorously evaluates charities and their top recommendations benefit poor people. http://www.thelifeyoucansave.o... has a longer list of recommended charities. Both websites are part of the effective altruism movement which applies evidence and reason to determine the most effective ways to improve the world.
If more sysadmins installed this, perhaps we wouldn't have problems with so many Linux compromises? Of course it's no substitute for patching, but seems like a good additional security measure.
This is from the gnu.org software directory
The exploitation of buffer overflow and format string vulnerabilities in process stacks are a significant portion of security attacks. 'libsafe' is based on a middleware software layer that intercepts all function calls made to library functions known to be vulnerable. A substitute version of the corresponding function implements the original function in a way that ensures that any buffer overflows are contained within the current stack frame, which prevents attackers from overwriting the return address and hijacking the control flow of a running program.
The true benefit of using libsafe is protection against future attacks on programs not yet known to be vulnerable. The performance overhead of libsafe is negligible, it does not require changes to the OS, it works with existing binary programs, and it does not need access to the source code of defective programs, or recompilation or off-line processing of binaries.
Here's another Perl Module for looking up IP address based on country. This one requires a C library, and there is a slower one that is pure perl here.
The basic IP to country database is free and updated monthly.
There is a free database with open source APIs to identify the country based on the IP Address:
GeoIP
This could be used to block access from certain countries by using the Apache mod_geoip module.
OSDN has done a lot for the Open Source community. They have provided Sourceforge, providing free
hosting and development environment for over Open Source 35,000 projects. Signing up for Slashdot is a great way of supporting OSDN, and helping to ensure that Sourceforge and other OSDN projects stay alive.
LPABO and LPAKO are public domain Linear Programming packages
from the Seoul National University. LPABO
uses an interior-point method, while LPAKO uses the simplex method.
I've looked at several other free LP solvers, and this package looks like it is fairly fast and
robust.
I wasn't able to find a license for these packages. Maybe you could ask the author about releasing their software under the GPL or another Free Software license?
QLITech has a nice line of Linux laptops. I bought the Amethyst 20U from Tuxtops, now the King System, and I'm very happy with it. IBM also sells laptops running linux if you look around. Don't pay the Microsoft tax!
I'm interested in creating an open source project to locate the country of the user based on the IP address. One useful application would be to locate the nearest download mirror for a ftp site. If you are interested in this project, or know of a similar open-source project already under way, please email me.
I recently bought my laptop (Topaz 8400) from http://www.tuxtops.com with RedHat 6.2 pre-installed and I love it. It couldn't be easier and you don't have to pay the Microsoft tax.