Skip Navigation

Search

Firefox Can't Connect to Specific LAN IP

This is a really weird problem that I can't seem to track down further. Perhaps a creative person could suggest some test ideas. Here are the facts:

  • Firefox "Unable to connect" to my LAN server (a router) at 192.168.0.2 port 80.
  • Network error is specifically "NS_CONNECTION_REFUSED".
  • Wireshark on a Raspberry Pi placed between the laptop and server shows no packets exchanged trying to connect. Any packet containing 192.168.0.2, any port.
  • Chrome and Safari work just fine on the same machine. I can see the packets in Wireshark. This validates my test setup works.
  • Curl works, loads the web page. I can see the packets.
  • I have reinstalled, refreshed, removed all extensions, cleared all history and cookies in Firefox and still cannot load the page.
  • Firefox in Safe Mode cannot load the page.
  • Disabled DNS over HTTPS, made sure No Proxy is selected in network settings. Still cannot load the page.
  • Disabled IPv6 in Firefox with about:config setting. Still fails.
  • I have no security software installed of any kind on this Mac. No antivirus or firewall except the default OS one.
  • Turned off Mac built-in Firewall. Still unable to connect.

Why is Firefox apparently refusing to connect to my server? Other LAN IP addresses work fine, even local ones. It specifically hates this one.

19

How do I prevent a USB docked HDD from spinning down constantly?

I have a full sized HDD in a USB 3 dock, and my power settings inactive timer is set to 300 minutes. This doesn't appear to be applying to the docked HDD, as it spins down in about 5 minutes or less. It takes forever to spin back up when I access it, so how can I change this?

2

Amazon Web Services (AWS) - multiple MFAs with root?

aws.amazon.com You can now assign multiple MFA devices in IAM | Amazon Web Services

At Amazon Web Services (AWS), security is our top priority, and configuring multi-factor authentication (MFA) on accounts is an important step in securing your organization. Now, you can add multiple MFA devices to AWS account root users and AWS Identity and Access Management (IAM) users in your AWS...

You can now assign multiple MFA devices in IAM | Amazon Web Services

Has anybody gotten this to work? If I set up multiple MFA devices with my IAM accounts, they all work flawlessly. But if I set up multiple MFA devices with my root account, only the original MFA device works. No matter how carefully I set up and synch a secondary device, it simply will not work with root. As the linked article says, this should be possible with either root or IAM (though in the past this was not the case). Thanks.

1