Specific website has blocked by Cisco ASA 5510 firewall. How to unblock it?

[faheem1]

I have Cisco ASA 5510 firewall. Only one website has blocked. What is the procedure to put website  on firewall exemption?

[Dennis Mink]

Are you alreading doing webfiltering on the ASA? are you doing this in conjunction with Firepower?

if not it seems odd that just one website/url is blocked.  what is this using standard 80/443 ports?

[Dennis Mink]

Are you alreading doing webfiltering on the ASA? are you doing this in conjunction with Firepower?

if not it seems odd that just one website/url is blocked.  what is this using standard 80/443 ports?

[faheem1]

Hi Dennis,

Am using ASA 5510 since 5 years and didn't configure it for web filtering. Also i am not using any web filtering software or Firepower.

The same website was working properly in our organization, since yesterday we are unable to open website. 

[Dennis Mink]

does the website work when you browse it from a mobile?

[faheem1]

No it's not working with the mobile and tablet.

Below is the error detail.

This site can’t be reached

adbc.abudhabi.ae took too long to respond.

Try:

• Checking the connection
• Checking the proxy and the firewall
• Running Windows Network Diagnostics

ERR_CONNECTION_TIMED_OUT

[Florin Barhala · Accepted solution]

But how do you determine it is being blocked by the FW?

Maybe the NAT public IP you guys use for browsing has been blacklisted, or maybe there're some related issues between your ISP peering toward that site.