Cannot access our own website internally

Abe 1 Reputation point
2021-09-30T09:53:19.763+00:00

Hi there,

I have recently upgraded our internal network to a brand new Windows server 2019 with all the latest updates and a fresh Active Directory.

Since doing that none of the computers on the internal network can access our company webiste www.alcom-it.co.uk

Have tested in Edge, Chrome and Firefox but all 3 just timeout and give this error...

**

This site can’t be reached

**
www.alcom-it.co.uk took too long to respond.
Try:

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

ERR_CONNECTION_TIMED_OUT

Tearing my hair out now so any suggestions would be most welcome.

Thanks,

Abe

Internet Information Services
{count} votes

2 answers

Sort by: Most helpful
  1. Abe 1 Reputation point
    2021-10-01T07:24:55.943+00:00

    We don't have an IIS server running. Our website is hosted externally.

    I can access the website when I am out of the office but when I am in the office the website does not work.

    I have run a ping test and these are the results

    Pinging www.alcom-it.co.uk [192.168.100.254] with 32 bytes of data:
    Reply from 192.168.100.182: Destination host unreachable.
    Reply from 192.168.100.182: Destination host unreachable.
    Reply from 192.168.100.182: Destination host unreachable.
    Reply from 192.168.100.182: Destination host unreachable.

    Ping statistics for 192.168.100.254:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

    0 comments No comments

  2. Gary Nebbett 5,846 Reputation points
    2021-10-01T07:56:17.44+00:00

    Hello @Abe ,

    I felt proxy-embarrassment when reading this.

    nslookup suggests that the public IP addresses of www.alcom-it.co.uk are: 2606:4700:3035::ac43:b9f4, 2606:4700:3030::6815:206d, 104.21.32.109, 172.67.185.244.

    192.168.100.254 is a private network IP address. There is obviously some misconfiguration of the company internal DNS for the name www.alcom-it.co.uk.

    Gary

    0 comments No comments