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I upgraded
Firefox on a
Linux system running CentOS 7 to version 52.8.0-1 with yum upgrade
firefox. When I opened Firefox afterwards and put google.com in the
address bar, I saw the message below:
Your connection is not secure
The website tried to negotiate an inadequate level of security.
uses security technology that is outdated and vulnerable to attack. An attacker could easily reveal information which you thought to be safe. The website administrator will need to fix the server first before you can visit the site.
Error code: NS_ERROR_NET_INADEQUATE_SECURITY
When I went to another site, wikipedia.org, using
HTTPS, I saw
the same message. I checked to ensure that the web browser wasn't configured to
use a proxy by clicking on the icon with the three horizontal bars at the top,
right-hand side of the browser window and selecting Preferences, then
Advanced, then Network, then Settings. The setting
was "No proxy." I then right-clicked on the "Your connection is not secure"
page and chose View Page Info. When I clicked on the Security
tab, I saw the "Owner" value listed as "This website does not supply
ownership information." In the Technical Details section, I saw "Connection
Not Encrypted" and "The website www.google.com does not support encryption
for the page you are viewing," even though the URL listed was
https://www.google.com/?gws_rd=ssl.
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When you start the Firefox web browser, it will attempt to determine if the network connection available to it when it starts is via a captive portal. If you use a hotel's Wi-Fi service, a free WiFi service provided by a restaurant or other business, or some other public WiFi service, when you first open your browser you may see a web page asking you to accede to terms of service, an acceptable use policy, or to provide some authentication information, e.g., perhaps your name and room number for a hotel, or to provide payment information if you are accessing a wireless service that is not free. You won't be able to go elsewhere on the web, at least not easily, until you deal with the demands/conditions specified on the captive portal page.
Firefox makes a determination on whether there is a captive portal
constraint by attempting to download the file success.txt
from
http://detectportal.firefox.com/success.txt (there is only one word in
that file, the word "success". If it can successfully
retrieve that file, it can assume that it is not constrained by a
captive portal. You can see such attempts using the
free and
open-source (FOSS)
Wireshark
packet analyzer
utility by
specifying a filter of "http.request.method == "GET".
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If you are seeing a "Firefox has detected that the server is redirecting the request for this address in a way that will never complete" message, the problem may be resolved by removing cookies or history associated with the site, but you might also need to check the cookies exceptions list in Firefox; that's how I was finally able to resolve a problem accessing a particular site that I could access in another browser on a system, but not with Firefox.
When trying to log into the Rakuten Marketing website using Firefox 52.0.1 on a Windows 10 system, I saw the message below after being redirected to http://cli.linksynergy.com/cli/common/login.php:
The page isn't redirecting properly
Firefox has detected that the server is redirecting the request for this address in a way that will never complete.
• This problem can sometimes be caused by disabling or refusing to accept cookies.
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On a Macintosh, aka Mac, OS X/macOS system, the user profile directory where the Firefox web browser stores its data can be found at "/Users/account_name/Library/Application Support/Firefox/Profiles" where account_name is the relevant user name. The profile directory for the account will be a sequence of 8 characters followed by ".default". E.g.:
$ ls "/Users/jasmith1/Library/Application Support/Firefox/Profiles" bgq13udo.default $
Within that directory will be a cookies.sqlite file within which
Firefox stores browser cookies. You can view those cookies outside of
Firefox using the
SQLite
relational database management system software found on
OS X/macOS systems. You can examine the sqlite file with the
sqlite3 command, which you
can run from a command line interface (CLI), i.e., a
Bash shell prompt, by opening a
Terminal window; the Terminal application is found in the
Applications/Utilities directory. You can
examine the structure of the database using the SQLite .schema
command. There is a moz_cookies
table within the database.
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ls -l ~/Library/Application\ Support/Firefox/Profiles.
(you need to put a backslash before the space in the directory path)$ ls -l ~/Library/Application\ Support/Firefox/Profiles total 0 drwx------ 53 jasmith1 ABC\Domain Users 1802 Jan 23 11:56 bgq13udo.default $
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The Browserspy website's Adobe Flash Information page showed the version of Flash installed on her system was 23.0.0.162.
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$ ls ~/Library/Application\ Support/Firefox/Profiles bgq13udo.default $
Within that directory is a places.sqlite SQLite database. OS X comes with the sqlite3 program for creating, viewing, and editing SQLite databases - see Using SQLite for information on how to use the program.
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