Technology Insights

Configure Static IP and DNS on HP Photosmart C5150

The easiest way to configure a static IP on the HP Photosmart C5100 is via the web interface. You probably do not know to the IP address of the all-in-one printer since you are just now configuring the static IP and if it is currently on the netork then it has received a dynamic IP address via DHCP (Dynamic Host Configuration Protocol). Regardless its an easy process which I will explain step by step below.

  1. Locate IP Address: First we will need to locate the current Internet Protocol address of the printer. Look in the properties of the printer and look at the Ports tab to see if there is an IP address specified. If there is not then you can print a test page, bring up a command prompt, and type “arp -a”. You should notice a couple different IP addresses of which one should be associated with a Physical Address that begins with 00:19:BB which is Hewlett Packard. Once you have located the IP address take note. It should be an address where the first three octets begin with 192.168.0.

Technology Insights

Firewall Settings for Playstation 3, PS3 Firewall Ports

If your PlayStation 3 is operating slow, losing connection, or just not working right most of the time the chances are that you need to change some settings on your Internet router or firewall. Routers use NAT(Network Address Translation) to allow multiple devices to function behind the router as if they all have the public address that your ISP(Internet Service Provider) has provided to you. The PS3 requires various ports to be open to communicate with other users online as well as other ports to be opened to the PlayStation 3 for other games to function properly. Below I list these ports required for the PS3 to operate, ports required for certain games to operate, and followed by a brief explanation of what you need to look for in terms of configuring your router or firewall.

Technology Errors

TFTP: Error code 1: File not found

You may get the below error code when attempting to transfer files with TFTP.

Error code 1: File not found

If you do get this error the issue is likely that the file does not exist on the server you are trying to place the file on using TFTP. If you are on a linux server you can just touch the file name on the TFTP server before transferring the actual file via TFTP.

TFTP: Trivial File Transfer Protocol

Technology Insights

Linux: Setup TFTP Server on CentOS

The below steps will allow you to set up a TFTP server on Linux but specifically on a CentOS server. All you need to do is install a couple files with yum, enable the server, and restart xinetd.

  1. Install TFTP Server: Use the below syntax to install the TFTP server on CentOS.
  2. bash

    1. [root@centos-server ~]#yum install tftp-server

Technology Insights

Upgrade a Linksys WRT54G Version 5 Wireless Router Firmware

Upgrading a Linksys WRT54G v5 wireless router is a bit more complicated than most of the other Linksys WRT54G wireless routers. It is not as easy as downloading a dd-wrt .bin file and uploading it via the router administration GUI. Instead you must first install some other bin files to wipe the wireless router clean and then install the dd-wrt software.

Follow these instructions and your wireless router will be running dd-wrt software in no time.