Showing posts from March, 2011

the card is locked

I experienced with this strange incident with my brother casio Exilim camera. a few minute after remove the memory card to copy some of new pict to my computer than insert again to the camera, but what....when I try to take a picture there is flash red text " the card is locked " ....hmmm...with a little surf on google finally I found a solution at yahoo solution.... ok.. here we go... Remove the memory stick or card from the camera. There is a small switch near the end that goes into the camera on the right side as you look at the top of the SD memory card. There may be a different set up on memory sticks . Make sure this switch is not on "Lock." CAUTION To prevent data loss, wait for lights to stop blinking then turn camera off before removing memory. For memory card readers , double click Safely Remove Hardware, Stop, and OK. Most digital cameras reset to original settings if batteries are removed for one minute. After one hour, check came

iPhone 4 vs. Android: And the winner is...

Apple unveiled its latest magical and revolutionary product this week: the new  iPhone 4 , also known as "the phone that guy from Gizmodo  showed us seven weeks ago ." From a hardware perspective, the new iPhone is a significant improvement over Apple's last offering. And on the software side, the updated operating system brings about numerous capabilities previously

About RouterOS

What is RouterOS? MikroTik RouterOS is the operating system of MikroTik RouterBOARD hardware. It can also be installed on a PC and will turn it into a router with all the necessary features - routing, firewall, bandwidth management, wireless access point, backhaul link, hotspot gateway, VPN server and more. RouterOS is a stand-alone operating system based on the Linux v2.6 kernel, and our goal here at MikroTik is to provide all these features with a quick and simple installation and an easy to use interface. You can try RouterOS today, go to and download the installation CD image. The free trial provides all of the features with no limitations. In the following pages you will find examples of some of the most important RouterOS features. Configuration RouterOS supports various methods of configuration - local access with keyboard and monitor, serial console with a terminal application, Telnet and secure SSH access over networks, a custom GU

How to secure a network using ARP

Although hosts in IP network are addressed using IP addresses, hardware addresses must be used to actually transport data from one host to another at Layer-2 (EG: Ethernet). Address Resolution Protocol (ARP) provides a mapping between the two different forms of addresses. A router has an ARP table that contains ARP entries. ARP entries consist of IP addresses and corresponding hardware addresses (such as a MAC address). Normally ARP provides a dynamic mapping from an IP address to corresponding hardware address by adding ARP entries automatically as they are discovered, but to increase network security static ARP entries can be created manually. By allowing a router to reply only to those static ARP entries found in the ARP table we restrict access to the router and to the network behind the router to only those IP/Hardware address combinations found in the ARP table. To make a router use only static ARP entries follow the steps listed below: 1. Add ARP entries of hosts