Instructions to modify your DNS servers
Due to the DNS flaw described below, Seanet has re-configured the structure of
our DNS servers. If you have the old servers configured statically into
your network devices you will need to set them to automatically get DNS servers
(recommended) or configure the new addresses into your system.
Background: As you may or may not be aware, a
vulnerability has been uncovered which affects all DNS (Domain Name System)
servers. DNS is important to you because it allows you to type names into your
browser, instead of IP addresses. An example is www.seanet.com instead of
64.38.166.88. Using this flaw, hackers have the potential to direct you to
malicious sites, spoofing the original, and can gain your username and password
for Banking or any other online service you may use. If you wish to find
more information about this issue we found a good article at
Computer World. We have made steps to ensure the safety of our customers.
OLD SERVERS = 199.181.164.1 and 199.181.164.2
NEW SERVERS = 199.181.164.11 and 199.181.164.12
IMPORTANT NOTE: This will need to be done on every computer which has a
static configuration, the settings may also be in your router or DSL modem.
If these steps are not
completed by Monday September 8th your internet will effectively be down.
Windows Vista or XP
Check to see if computer settings are correctly
Configured:
1. Click on Start
==>Run ==>In the box type cmd
==>Click OK
2. In the black command prompt type
ipconfig /all and press Enter
Screenshot
3. Under your network adapter (Typically "Ethernet
Adapter Local Area Connection) find the DNS Servers
line (highlighted in above screenshot)
4. If your servers read "199.181.164.1
or .2" the computer is not configured properly. If they
read "199.181.164.11 or .12" the computer is
configured. If your computer needs further
configuration in Windows 1.
Click on Start ==>Run (on Vista type run in the search box then click run)
2. In the box type ncpa.cpl and click ok.
Screenshot 1
3. This opens up the network connections, Right-click on the
network device you use and click Properties (typically Local
Area Connection for wired systems)
Screenshot 2
4. Click on Internet Protocol TCP/IP and click Properties (Vista click on
Internet Protocol Version 4)
Screenshot 3
5.
a. If you have "Use the following DNS server addresses:" selected, select
Obtain DNS server address automatically and click OK.
b. If you are not able to select this option, then change the
addresses to 199.181.164.11 and 199.181.164.12.
Screenshot 4
6. Click OK to exit this screen and OK again
to apply the settings.
Mac
1. If you are on a
Mac, instructions to access these settings are found
here.
2.
a. If you have "Configure using DHCP" enabled then Remove
199.181.164.1 and 199.181.164.2 in the optional domain name servers box
and click Apply.
b. If you have "Configure Manually" selected, change the values to
199.181.164.11 and 199.181.164.12 and click Apply.
Actiontec Modem
Note: Due to different versions your view may be slightly different
1. If you are plugged
directly into your Actiontec modem open up a web browser
and type in 192.168.0.1
2. The Actiontec setup page should load, from here on the left, click on
"Alternative Setup" or "Non-windows Setup"
3. On this page scroll down near the bottom and under "DNS Settings" check
"Dynamic".
4. Save and Restart modem
Linksys Router:
1. If you are plugged into a Linksys open a web browser and type in 192.168.1.1
in the address bar.
2. On older Linksys models the default username is blank and the password is
"admin" newer models both the username and password are set to "admin".
3. On the main Linksys setup page near the bottom there should be a place to
enter "Static DNS". These should be blank. If not, remove the values in these
boxes and "Apply Settings"
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