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Encountering difficulties accessing some websites when connected to a router

This article will guide you on how to resolve difficulties accessing some websites when connected to a Linksys router.  If you are unable to connect your wireless computers to the network, click here for instructions.

Checking the router’s security settings
Checking your computer’s security settings
Security on the web browser is set too high
Configuring the Maximum Transmission Unit (MTU) on the router
Opening ports for secured sites

IMPORTANT:  Before you proceed with the steps below, make sure you are able to access the inaccessible website when the computer is directly connected to the modem.

Checking the router’s security settings

Step 1:
Access the router’s web-based setup page.  To learn how, click here.

NOTE:  If you are using a Mac computer to access the router's web-based setup page, click here.

Step 2:
Click on the Access Restrictions tab.  Make sure that there is no policy conflicting with the website that you are trying to access.

Checking your computer’s security settings

Make sure that the third-party firewall settings of your computer is not preventing you from accessing the website.  To learn more about this, you may contact your computer firewall’s manufacturer.

Security on the web browser is set too high

NOTE:  This feature is only available for Internet Explorer.

Step 1:
Launch the Internet Explorer web browser.

Step 2:
Click on Tools > Internet Options.

Step 3:
Click on the Security tab then click on the Custom level… button.

Step 4:
In the Reset to: drop down, select Medium-low.

NOTE:  The Medium-low will have a lower website filter rate compared to a Medium setting.

If this process did not work for you, enable the Maximum Transmission Unit (MTU) on the router.  For instructions, follow the steps below:

Configuring the Maximum Transmission Unit (MTU) on the router

Step 1:
Determine the proper MTU size for the website.  To learn how to do this, click here.

Step 2:
Access the router’s web-based setup page.  For instructions, click here.

NOTE:  If you are using a Mac computer to access the router's web-based setup page, click here.

Step 3:
When the router’s web-based setup page appears, look for MTU under Internet Setup and set it to Manual.  Under Size, enter the appropriate MTU value which you obtained from Step 1.

Step 4:
Click Save Settings.

If this did not work, open ports on the router.  For instructions, follow the steps below:

Opening ports for secured sites

Step 1:
Access the router’s web-based setup page.  For instructions, click here.

NOTE:  If you are using a Mac computer to access the router's web-based setup page, click here.

Step 2:
When the router’s web-based setup page appears, click Applications & Gaming > Port Range Triggering.

Step 3:
Under Application Name, enter “https”.  Under the Triggered Range and Forwarded Range fields, enter "443".  Once done, make sure you check the Enabled box.

 

NOTE:  Https is the application name of a secured site.  Port 443 is the port being used by the https application.

Step 4:
Click Save Settings.

If the five (5) options did not work, try resetting the router to factory defaults then reconfigure the router with the appropriate settings of your Internet Service Provider (ISP).  To learn how to do this, click on the links below:

Setting up a Linksys router with Cable Internet service
Setting up a Linksys router for DSL Internet connection
Setting up a router with a Static IP account

However, if you still cannot access some websites when directly connected to the modem, contact your ISP for verification.


Related Articles:

Identifying if the Website is Secured
Encountering difficulties when sending and/or receiving emails using a Linksys router
Disabling Proxy Settings on Internet Explorer
Can't access the Internet but can open emails

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