Verify or Reenter Network
TCP/IP Settings
in EN Machines

 
computer support
Search How to's
Computer Training
 

The following screen shots and information will help you verify that the DNS and WINS servers settings are correct in your EN machine's "Local Area Connection" network connection. Certain settings were entered during setup that point the machine to the College of Ag Sciences network resources. By having these settings at our standards, your machine is able to connect to our resources. Example: the Outlook with Exchange mail server. If you are unfamiliar with this process, consider reviewing the Additional Terms Explained section first

You may need to write down (backup) and then reenter these settings in the following cases.

  • Access to the Internet from your home or a hotel may require different settings. You will use the following information to reenter the PSU information once you return to your office.
  • The settings have been restored to the original, pristine state while troubleshooting virus/spyware issues. In this case, you will reenter the standard college settings.

Note: Home machines or Non-EN machines that use College resources (Outlook configured for the College's Exchange server) should avoid using these DNS and WINS numbers to "point" their computer to our servers. Instead, you should establish a VPN connection to Penn State before opening Outlook.


Write Down (Backup) Your Current Settings Additional Terms Explained
Reenter Standard College Settings  

Write Down (Backup) Your Current Settings

You have several options for opening the Network Connections window. Step 1 lists three options.

  1. Right-click the My Network Places icon on the desktop and click Properties.
    or
    Click Start, click Control Panel, and then click once on Network and Internet Connections. Click once on Network Connections.
    Or
    Click Start, click Control Panel, and then Double-click on Network Connections.


    Note: We recommend that you view this folder by Details, instead of by Icons or by List. This allows you to identify the correct connection,

  2. From the View menu choose Details. Scroll to the LAN or High-Speed Internet section. You should see listings similar to the below graphic. Please note, your listings may be numbered differently. Ex: the "Local Area Connection" for the Cisco Systems VPN Adapter may be may "Local Area Connection 3" instead.



    KEY POINT #1
    : These steps assume that you will be selecting the "Local Area Connection" entry that corresponds to your wired, Ethernet port on the back of your computer. There is a simple means of doing this. Have the network connected when you open the Network Connections window. The entry listed as "Connected, Firewalled" in the Status column will be the one you select. Some laptop computers may have an additional entry if the computer is placed in a "dock" or if they have a PC card for their network connection. Again, have the network wire connected. The active connection should be listed as "Connected, Firewalled" in this window. This will be the entry you check the settings in.

    KEY POINT #2: If you use a "Wireless Network Connection" from outside the office to access the College Exchange server, this connection should NOT be given the College's DNS and WINS entries. If you need to access College Resources from a Wireless connection (from home or a hotel),
    you should establish a VPN connection to Penn State once you have a network connection.

  3. Right-click the Local Area Connection icon and then click Properties.

  4. Scroll to the bottom of the "This connection uses the following items:" and highlight (select) Internet Protocol (TCP/IP). Then click Properties.



  5. On the General tab, write down which Radio buttons are selected. If you see any numbers, write them down. (See Samples A, B, and C).

    Sample A (Dynamic IP, Dynamic DNS) Sample B (Dynamic IP with College DNS)

    Sample C (Static IP with College DNS)
     
     

  6. If your dialog box appears like the Sample A or Sample B graphic (the Radio button "Obtain an IP address automatically" is selected), click the Alternate Configuration tab as well. Go to Step 7.

    If your dialog box appears like the Sample C graphic, go to Step 8.

  7. In 99 percent of cases, the Alternate Configuration tab should be given the Automatic private IP address setting (see Sample C graphic). It is very unusual for the "User configured" option (see Sample D graphic) to be set. But, if you computer has these settings, write them down. Please note, the DNS and WINS numbers should match the below sample! If you have other entries, write them down as a backup. Then edit the settings to match the College Standard settings.

    To return to the General screen, click the General tab.

    Sample D (Alternate Configuration - Automatic) Sample E (Alternate Configuration - User config)

  8. From the General tab, click the Advanced button. Click the DNS tab. The below graphic displays how the dialog box may look. Write down these settings. Note: An example NOT listed below is an entry without DNS numbers. If you had a box similar to Sample A above, you will not see DNS numbers listed.

    Sample F (DNS Tab with no VPN) Sample G (DNS Tab with VPN connected)

    Note: If your Enterprise computer is located in an Extension office with a Server and a 3COM router, you may not have any DNS numbers listed. See Sample G. That is fine. Leave as is. Otherwise, you should have 2 listings:

    128.118.124.206, 128.118.93.206.

    Note
    : We have used other entries when setting up EN machines in the past: 128.118.25.3, 128.118.93.141, 128.118.93.142, 130.203.1.4, 128.118.141.32, 146.186.163.66. If you have the older numbers, you should remove them. Then, click Add and enter the new DNS numbers.

    Note: It should be a rare circumstance that you would need to add or change the DNS numbers. Examples that we have seen....

    a) Some county extension offices have reported being unable to visit non-PSU sites unless their ISP's DNS entries are also entered here. If your office is in this situation, you should record these numbers if they exist.

    b) Some Hotels want you to use their numbers. In these cases you would select the Radio button for "Obtain DNS server address automatically." When you leave the hotel, you would need to reenter the College numbers.

  9. All Enterprise computers should have Append primary and connection specific DNS suffixes and Append parent suffixes of the primary DNS suffix entered in the middle section of the DNS tab (see Sample E).

  10. If you are have an active VPN connection on your machine (see Sample F), the radio button choice will switch and you will see psu.edu in the Append these DNS suffixes (in order) section. This is added by VPN itself when it connects. You do not need to add it manually! Do not write it down.

    KEY POINT #3: You should verify that the Append primary and connection specific DNS suffixes and Append parent suffixes of the primary DNS suffix are selected in the middle section of the DNS tab (see Sample E) when your computer does NOT have a VPN connection. In the past, your computer may have had agsci.win.psu.edu and
    win.psu.edu entries listed in this box. They are no longer used.

  11. Click the WINS tab. Write down these settings. The below graphic displays how the dialog box may look.

    Sample H (WINS Tab)


    Note
    : If your Enterprise computer is located in an Extension office with a Server and a 3COM router, you may not have a WINS number listed. That is fine. Leave as is.Otherwise, you should have 1 listing:

    128.118.124.207

    Note: We have used other entries when setting up EN machines in the past. Ex: 128.118.155.11, 128.118.155.200, 128.186.157.97, 128.186.157.91 are the older numbers. If you have the older numbers, you should remove them. Then, click Add and enter 128.118.124.207 as the new WINS number.

    Note: The Enable LMHOSTS lookup checkbox should be checked. In the NetBios setting section, the Enable NetBIOS over TCP/IP button should be selected.

  12. Click OK. Click OK. Click Close.

  13. Keep this information as a backup in case you need to reenter the information.

top of page


Reenter Standard College Settings

  1. Right-click the My Network Places icon on the desktop and click Properties.
    Or
    Click Start, click Control Panel, and then click once on Network and Internet Connections. Click once on Network Connections.
    Or
    Click Start, click Control Panel, and then Double-click on Network Connections.


    NOTE: These steps are given for the "Local Area Connection" entry. You could do them for the "Wireless Network Connection" or for a "Local Area Connection" entry that corresponds to a "docked" laptop as well.

  2. Right-click the Local Area Connection icon and then click Properties.

  3. Scroll to the bottom of the "This connection uses the following items:" and highlight (select) Internet Protocol (TCP/IP). Then click Properties.

  4. On the General tab, depending on your original settings, select either (1) Obtain an IP address automatically or (2) Use the following IP address.

  5. If you selected (1), click the Alternate Configuration tab. If you have information to reenter here, do so. Otherwise, click the General tab.

    If you selected (2), enter the IP address, Subnet mask, and Default gateway from your backup.

  6. In the 2nd radio button on the General tab, select either (3) Obtain DNS server address automatically or (4) Use the following DNS server addresses.

  7. If you selected (3), you don't need to make any changes. Go to the next step.

    If you selected (4), enter the DNS server entries for the Preferred and Alternate DNS servers so they match the backup settings. If you are unsure or don't have these written down, enter these numbers:

    Preferred
    DNS server: 128.118.124.206
    Alternate DNS server: 128.118.93.206

  8. Click the Advanced button. Click the DNS tab. You will see the Preferred and Alternate DNS servers already listed. Click the Add button (at the top of the dialog box).



  9. Enter the DNS server address from your backup.

  10. If you don't have additional numbers to enter, go to the next step. If you do, click the Add button again. Enter the number. Click Add. Repeat until all the DNS numbers are entered.

    Note: All Enterprise computer should have Append primary and connection specific DNS suffixes and Append parent suffixes of the primary DNS suffix entered in the middle section. Steps 11 - 13 will help you enter them.

  11. Click the Append primary and connection specific DNS suffixes Radio button.
    Click the Append parent suffixes of the primary DNS suffix check box beneath this setting.



  12. The DNS suffix for this connection: should be empty.
    The Register this connection's addresses in DNS checkbox should be checked.
    The Use this connection's DNS suffix in DNS registration checkbox should not be checked.

  13. Click the WINS tab.

  14. If you see any of the "old" WINS numbers, such as 128.118.155.11, 128.118.155.200, 128.186.157.97, or 128.186.157.91, highlight each one and click Remove until they are all deleted.

  15. Click the Add button. Enter the WINS addresses from your backup. If you are unsure or don't have this written down, enter this number: 128.118.124.207 and click Add.

  16. The Enable LMHOSTS lookup checkbox should be checked.

  17. In the NetBios setting section, click the Enable NetBIOS over TCP/IP button.

  18. Click OK. Click OK. Click Close.

    Note: Assuming that you are connected with an Ethernet cable at this point and want to test the settings that you have restored, continue to the next step. You will be switching the connection Off and On to put these new settings in place. If you were performing these steps with the Wireless connection, you can switch it Off and On in the same manner.

  19. Right-click the Local Area Connection icon and click Disable.



  20. Wait a moment for the connection to be shut down. Then, Right-click the Local Area Connection icon and click Enable.

  21. Test the connection by opening Internet Explorer.

    Note: At this point, you're finished entering your network numbers. Below you will find definitions of some of the terms we used above. They may help you to better understand this technology. Included in these definitions are some troubleshooting steps as well.

Top of page


Additional Terms Explained

Ethernet Cables
These cables will connect your computer or printer to the Hub or Switch. They use an end called RJ-45. They look like oversized phone wires. The RJ-45 jack have an eight-pin connector while the RJ-11 jacks used by phone wires have room for only 4. These wires are normally yellow or blue in color. But they may be any color, including black or gray.

LAN or High-Speed Internet
When you open Windows XP's Network Connections window and view by Details, you will see several listings. The Local Area Connection is the default name for the LAN or High-Speed Internet connection. This is the connection that you open to check its settings. The below sample uses a Broadcom driver. Your driver name may be different (ex: 3Com).

If your computer has PSU's VPN client installed, you may also see a Local Area Connection 2 in the Network Connections window. This name may be different. This connection will always have the "Cisco Systems VPN Adapter" as part of its listing.
If you have a laptop with wireless, you will see a Wireless Network Connection. The above sample has a 1350 WLAN card. Yours may be different.
The 1394 Connection is not used, always ignore this connection. It should always be disabled.
Top of page

IP Address:
This "address" will be a set of 4 numbers Ex: 128.118.82.100 or 192.168.11.25. Depending on your office, you may be given a Static or Dynamic IP Address.

Static IP Address
Static or 'set' IP addresses are assigned to a single device (computer, printer). If your office is at a Penn State campus (ex: University Park), your machine will likely have a Static IP address. One advantage to having a Static address is the ability to host NetMeeting calls. The disadvantage is the direct exposure to the Internet and its various security risks.

Dynamic IP Address (also called DHCP address)
The Dynamic IP address is 'given out' as the name implies, dynamically, when the device is turned on. The DHCP address may be assigned by a DHCP server or by a device like a Router. Extension offices will normally have these addresses.

These IP addresses will normally start with 192.168.x.x. Other ranges that may be used are 10.x.x.x and 172.16.x.x. DHCP generated IP Address may change over time. One day you may have 192.168.22.60 and the next day it could be 192.168.22.62.

Note: If your office uses Dynamic IP Addressing, only the High Speed Access point device (see below) will have the Static IP address. In other words, it is the only device directly exposed to the Internet This helps to make the internal office network more secure.

Note: If the network is experiencing problems and the search for a DHCP server time-outs, Windows XP will assign itself an IP address in the address range of 169.254.x.x. An address like this is called an Autoconfiguration IP Address. It indicates that the device doesn't think that is connected to any network. Top of page

High-Speed Access via PSU backbone, DSL Modems, or Cable Modems
They are any number of ways that your computer may be connected to the Internet in the College. These four are the most common.

PSU Backbone: If you are located on a PSU campus or are in the Allegheny and Philadelphia Extension offices and there is a problem with Internet access, you won't be unplugging and plugging in any equipment during troubleshooting.

DSL (Digital Subscriber Line) Modem: These devices are provided by your Internet Service Provider or ISP. When you think about the "chain" of devices that provide Internet access, the DSL Modem is the first device from the wall (or the Internet). If troubleshooting, you will need to plug-unplug this equipment as part of troubleshooting. Since this is the first device in the chain, it should be turned back on FIRST and allowed to start completely.

Cable Modem: Like DSL, this is another means of getting high-speed Internet access to your office or home. You will again be provided with a hardware device from the ISP. This device will also need plugged and unplugged during troubleshooting. Like the DSL modem, it should be turned on FIRST and allowed to start completely. Top of page

Routers
Routers are devices that takes your requests (show me a web page, check my email) and passes (routes) them onto the Internet via the High-Speed Access method. Ex: if your office has a DSL modem, the request for a web page will start at your computer, go through the Router, then through the DSL modem and out to the Internet. When the page comes back, it flows through the DSL modem to the Router to the machine. Netgear and Linksys are two common manufacturers of these devices that are in use by County Extension offices. This device will need plugged and unplugged during troubleshooting. It should be turned on AFTER a DSL or Cable modem.

Hubs and Switches
A Hub or Switch are devices that connect devices on a network. Ex: to be able to print to a network printer, the computer and the printer will both be connected via a Hub/Switch. Hubs don't process network traffic. They just connect devices. Switches are better/faster than Hubs since they allow your machine to send and receive data at the same time. These devices will need plugged and unplugged during troubleshooting. They should be turned on LAST - after the DSL or Cable modem (1st) and the Router (2nd).

Top of page


IT Homepage | IT Site Index
Penn State University | College of Agricultural Sciences | Search | Contact Us

©College of Agricultural Sciences
This publication is available in alternative media on request.
Penn State is an Affirmative Action, Equal Opportunity University.
Please e-mail us with your questions, comments or suggestions at AgCompSupport@psu.edu
 
How To Verify or reenter Network TCP/IP Settings in EN Machines (vcv)
updated 8-3-06 [vcv]; updated 6-22-07 [vcv]
 

Penn State Home The College of Agricultural Sciences ICT Home