Posted by suvi under
Hardware,
Networking
In the annals of computer software with bizarre and seemingly random names, “Tomato” is probably one of the less weird examples as these things go. But whether you say tomay-toe or tomah-toe, this one is neither a fruit nor a vegetable—it is a firmware for wireless routers, including the popular WRT54G family.
Tomato is meant to [...]
Posted by suvi under
Networking
Cfengine is an automated suite of programs for configuring and maintaining Unix-like computers. It has been used on computing arrays of between 1 and 20,000 computers since 1993 by a wide range of organizations. Cfengine is supported by active research and was the first autonomic, hands-free management system for Unix-like operating systems.
Cfengine is an autonomic [...]
Posted by suvi under
Networking,
Security
Being connected to the Internet means exposure to what the outside world has to offer — including the undesirable elements. Every time you connect to the Internet, you’re exposed to threats that can compromise your network’s security. Although network security solutions have evolved in recent years, so have network attack techniques. To prevent ever-evolving attacks [...]
Posted by suvi under
Networking
Puppet lets you centrally manage every important aspect of your system using a cross-platform specification language that manages all the separate elements normally aggregated in different files, like users, cron jobs, and hosts, along with obviously discrete elements like packages, services, and files.
Puppet’s simple declarative specification language provides powerful classing abilities for drawing out the [...]
Posted by suvi under
Networking,
Software,
Ubuntu
LogMeIn Hamachi is a zero configuration VPN that works with your existing firewall and allows you to access your computer no matter where you are, as long there is Internet connection.
While there is a nice interface for the Windows version, Linux users can only access to Hamachi via the command line interface. Nevertheless, with some [...]
Posted by suvi under
Networking,
Security
Content-filtering proxies restrict Internet access privileges for users or groups across an entire network. They must be able to block unwanted content through keyword, URL, DNS, MIME, and image filtering. They need to authenticate and log a user’s Internet activity by monitoring and generating detailed reports of URLs accessed, and they must integrate antivirus or [...]
Posted by suvi under
Hardware,
Linux,
Networking
With the sudden website move out of the way and only as damaged as expected (there fill be the odd bad link for a while, mostly older stuff but if you see something please point it out to me), I turned my attention to the Linksys NSLU2 I acquired at LinuxWorld this year. The only [...]
Posted by suvi under
Networking,
openSuse
Maximum Transmission Unit (MTU) the size (in bytes) of the largest packet or frame that a given layer of a communications protocol can pass onwards. The MTU may be fixed by standards (as is the case with Ethernet) or decided at connect time. A higher MTU brings higher bandwidth efficiency. However, large packets can block [...]
Posted by suvi under
Fedora,
Networking
This tutorial explains how to install Hamachi
on a Fedora 9 server. Hamachi is a is a VPN service that easily sets up
in 10 minutes, and enables secure remote access to your business
network, anywhere there’s an Internet connection.
It works with your existing firewall, and requires no additional
configuration. Hamachi is the first networking application to deliver
an unprecedented [...]
Posted by suvi under
Networking,
Security,
Server
In this tutorial we will are going to provide simple procedure how to to perform UDP tunneling through an SSH connection.Say you need to forward UDP packets between two remote networks securely.
E.g : dns queries from your home machine to your dns servers at work.
you can use the following way :
Read more at Debian Admin
Posted by suvi under
Linux,
Networking
Linux makes networking simple and secure — if you know a few tricks. Jack Wallen shares some pointers to help admins knock out various Linux networking tasks with a minimum of effort.
Networking is a must-have on all levels of computing. Be it home or corporate, networking is the one aspect of computing that is, without [...]
Posted by suvi under
Networking,
Ubuntu
Maximum Transmission Unit(MTU), the largest physical packet size, measured in bytes, that a network can transmit. Any messages larger than the MTU are divided into smaller packets before being sent.By optimizing the MTU setting you can gain substantial network performance increases, especially when using dial-up modem connections.
Default MTU Size for Different Network Topology
Read more at [...]
Posted by suvi under
Linux,
Networking
The following is a follow-up to the WPA-PSK HOWTO, describing the way to configure the HP 530 laptop, Slackware 12.1 OS and a Lantech wireless access-point router using WPA2 encryption method. It might be however tuned up to match other router/distro combinations.
First, the wireless access point must be configured on the router:
[...]
Posted by suvi under
Networking,
Ubuntu
Maximum Transmission Unit(MTU), the largest physical packet size, measured in bytes, that a network can transmit. Any messages larger than the MTU are divided into smaller packets before being sent.By optimizing the MTU setting you can gain substantial network performance increases, especially when using dial-up modem connections.
Default MTU Size for Different Network Topology
Read more at [...]
Posted by suvi under
Networking,
Ubuntu
Iwspy is used to set a list of addresses to monitor in a wireless network interface and to read back quality of link information for each of those. This information is the same as the one available in /proc/net/wireless : quality of the link, signal strength and noise level.This information is updated each time a [...]