This iptables rule redirects all port 80 traffic from subnet 192.168.0.0/24 to 192.168.0.1 running HTTP proxy (say squid): /usr/sbin/iptables -t nat -A PREROUTING -s 192.168... Make any packets destined to port 3256 on firewall be NAT'ed to internal system server on port 80: iptables -t nat -I PREROUTING -s ! 192.168.2.0/24 ... To make internal web server work for clients from the internet, LAN and the firewall itself: Make all packets from the Internet going to port 80 on the firewall ( $INET_IP ) to be redirected (or DNAT'ed) to the internal HTTP server ( $HTTP_IP ): iptables -t nat -A PREROUTING --dst $INET_IP -p tc... SNAT the packets entering the firewall that are destined for $HTTP_IP (internal HTTP server) port 80 so that they...

If Ubuntu does not recognize the wifi adapter, use ndiswrapper and Windows XP driver instead: Install the needed Ubuntu packages: $ sudo apt-get install ndisgtk If there's no Internet access, the needed packages are available from the Ubuntu live CD under the directory /pool/main/n . Install both ndiswrapper and ndisgtk . Download and extract the Windows XP driver for your wifi adapter. Install the Windows XP driver: Browse to System/Administration/Windows Wireless drivers Click Install New Driver Select the .inf file, then click Install Connect to wifi networks as you normally do.

This is how to add the 3GB switch for Windows XP: Remove system and hidden attributes of C:\boot.ini : C:\>attrib -s -h boot.ini Add the 3GB switch to C:\boot.ini : [boot loader] timeout=30 default=multi(0)dis... Add system and hidden attributes: C:\>attrib +s +h boot.ini Reboot

To install the base qemu system: $ sudo apt-get install qemu But that only installs the emulators matching the host system ( i386 for example). To install the emulator for other architectures like mips , use: $ sudo apt-get install qemu-kvm-extras For Fedora, the command is: $ sudo yum install qemu-launcher

From Fedora Project wiki : A security context , or security label , is the mechanism used by SELinux to classify resources, such as processes and files, on a SELinux-enabled system. This context allows SELinux to enforce rules for how and by whom a given resource should be accessed. A security context is typically shown as a string consisting of three or four words. Each word specifies a different component of the security context, namely, the user , role , type , and level of that file or process . Each word is separated by a colon. Use the -Z switch to display security context info. Display security context for Apache files: $ ls -Z /var/www/ drwxr-xr-x. root root system_... Display security for files under...

Looks like for Linux fdisk , cylinders as display units was deprecated, using sectors is the new way. # fdisk -v fdisk (util-linux-ng 2.18) # ... Notice that cylinder numbers actually overlap for the last 2 partitions.

According to SELinux Trouble Shooting Tool AVC AVC stands for Access Vector Cache . SELinux Denials are reported in the logging system as AVC 's with the denied key word.

Suddenly my Windows XP failed to boot with this error message on a blank screen: missing or corrupt <windows root>\system32\hal.dll I took out the hard drive, put it in a USB enclosure and attached it to another PC. Then I ran CHKDSK and it fixed some file system errors. But I did find that hal.dll was intact, so hal.dll was not missing or corrupt . It turned out that the file that was really missing was C:\boot.ini . It is a hidden file, so you have to use attrib boot.ini to see it. The file is missing if attrib boot.ini returns nothing (run in the root folder C:\). In my case I reconstructed the boot.ini file: [boot loader] timeout=30 default=multi(0)dis... and changed the attributes back...

Update: I followed the advice from CamStudio Support Forum and selected Stereo Mix . That fixed the no-audio problem! Double click Speaker icon in System Tray > Options > Properties > Adjust Volume For Recording > Select Stereo Mix, Mono Mix, What-U-Hear, etc.

You need to merge this value into the Windows XP registry in order to make ClearType work for a remote desktop: Windows Registry Editor Version 5.00 [HKEY_... A restart is required for the change to take effect.