badssl.com VS AdguardBrowserExtension

Probably to demo it? I wish Google had "this link will always be considered harmful", like the stuff on https://badssl.com/.

With SSLVersionMin, I think TLS 1.0 and TLS 1.1 protocols are already disabled (they were originally going to be disabled in 2020, but it was postponed). If I try going to test pages on https://badssl.com/ that use those protocols, Brave displays an "Unsupported protocol" error page with error code ERR_SSL_VERSION_OR_CIPHER_MISMATCH – with no option for the user to bypass the error page. However, I'm not sure why InTune won't allow you to configure it to TLS 1.2 minimum version anyway.

See https://badssl.com/, or for a simple example of what happen when you access a page redirected by naughty DNS, set your private DNS to family.adguard-dns.com, then try opening PornHub.

.DESCRIPTION This cmdlet tests a URI for connectivity, and checks whether the TLS certificate is valid, expired, expiring soon, and returns information about the certificate when used with InformationLevel 'Detailed'. .PARAMETER Uri Specifies an HTTP/HTTPS URI. For example, https://www.powershellgallery.com .PARAMETER InformationLevel Specifies whether to return detailed information, or a simple $true or $false. .EXAMPLE Test-Uri https://badssl.com/ Returns a detailed TestUriResult with an IsTrusted property value of $true under normal circumstances. .EXAMPLE Test-Uri https://badssl.com/ -InformationLevel Quiet Returns a value of $true under normal circumstances. .EXAMPLE Test-Uri https://expired.badssl.com/ Returns a detailed TestUriResult with an IsExpired property value of $true .EXAMPLE Test-Uri https://expired.badssl.com/ Returns a detailed TestUriResult with an IsExpired property value of $true .EXAMPLE Test-Uri https://tls-v1-1.badssl.com:1011/ -SslProtocol Tls11 Returns a detailed TestUriResult where IsTrusted and UriTestSucceeded are $true, because we've specified to use SslProtocol Tls11. .EXAMPLE Test-Uri https://tls-v1-1.badssl.com:1011/ Returns a detailed TestUriResult where IsTrusted and UriTestSucceeded are $false, because only Tls12 and Tls13 are trusted by default. #> [CmdletBinding()] param ( [Parameter(Mandatory, ValueFromPipeline, ValueFromPipelineByPropertyName, Position = 0)] [uri[]] $Uri, [Parameter()] [System.Security.Authentication.SslProtocols[]] $SslProtocol = @([System.Security.Authentication.SslProtocols]::Tls12, [System.Security.Authentication.SslProtocols]::Tls13), [Parameter()] [ValidateSet('Detailed', 'Quiet')] [string] $InformationLevel = 'Detailed' ) process { [System.Security.Authentication.SslProtocols]$trustedProtocols = 0 $SslProtocol | Foreach-Object { $trustedProtocols = $trustedProtocols -bor $_ } foreach ($address in $Uri) { $result = [pscustomobject]@{ PSTypeName = 'TestUriResult' Uri = $address RemoteAddress = $null RemotePort = $null SourceAddress = $null RemoteCertificate = $null CipherAlgorithm = $null HashAlgorithm = $null SslProtocol = $null TcpTestSucceeded = $false UriTestSucceeded = $false IsExpired = $false IsExpiring = $false IsTrusted = $false } try { $tcpClient = [net.sockets.tcpclient]::new($address.Host, $address.Port) $result.TcpTestSucceeded = $true $result.RemoteAddress = $tcpClient.Client.RemoteEndPoint.Address $result.RemotePort = $tcpClient.Client.RemoteEndPoint.Port $result.SourceAddress = $tcpclient.Client.LocalEndPoint.Address if ($address.Scheme -eq 'https') { $stream = $tcpClient.GetStream() $sslStream = [net.security.sslstream]::new($stream, $false, { $true }) $protocols = 0; [enum]::GetValues([System.Security.Authentication.SslProtocols]) | Where-Object { $_ -match '(Ssl|Tls)' } | Foreach-Object { $protocols = $protocols -bor $_ } $sslStream.AuthenticateAsClient($address.Host, $null, $protocols, $true) $certInfo = [security.cryptography.x509certificates.x509certificate2]::new($sslStream.RemoteCertificate) $result.SslProtocol = $sslStream.SslProtocol $result.RemoteCertificate = $certInfo $result.CipherAlgorithm = $sslStream.CipherAlgorithm $result.HashAlgorithm = $sslStream.HashAlgorithm $result.IsExpired = $certInfo.NotAfter -le (Get-Date) $result.IsExpiring = $certInfo.NotAfter -le (Get-Date).AddDays(30) $result.IsTrusted = $certInfo.Verify() -and ($sslStream.SslProtocol -band $trustedProtocols) $result.UriTestSucceeded = $result.IsTrusted -and !$result.IsExpired -and ($sslStream.SslProtocol -band $trustedProtocols) if (-not ($sslStream.SslProtocol -band $trustedProtocols)) { Write-Warning "The transport layer security protocol $($sslStream.SslProtocol) is not in the list of trusted protocols: $trustedProtocols." } if ($result.IsExpired) { Write-Warning "Certificate for '$address' is expired. Subject='$($result.RemoteCertificate.Subject)'; NotAfter='$($result.RemoteCertificate.NotAfter.ToString('o'))'" } elseif ($result.IsExpiring) { Write-Warning "Certificate for '$address' expires in 30 days or less. Subject='$($result.RemoteCertificate.Subject)'; NotAfter='$($result.RemoteCertificate.NotAfter.ToString('o'))'" } } } catch { Write-Error -ErrorRecord $_ } finally { if ($sslStream) { $sslStream.Dispose() } if ($stream) { $stream.Dispose() } if ($tcpClient) { $tcpClient.Dispose() } } if ($InformationLevel -eq 'Quiet') { $result.UriTestSucceeded } else { $result } } }

Just use https://badssl.com/ to test the various errors.

For developers needing to test responses to various SSL issues there is https://badssl.com. Not my site, but one I use frequently to demonstrate the result of bad/incorrectly configured certificates.

https://badssl.com/ is a nice website, it shows all the ways ssl can be misconfigured. So you can see how it affects connections.

Modern Web Browsers implement robust, thorough control over SSL/TLS connections, including trust list management, protocol downgrade protection, etc. Using an HTTPS interception proxy therefore means the proxy has to implement all those controls, properly. At the very least, this shouldn't have any problems connecting to https://badssl.com/ (Google's test site, although I don't think this is currently maintained).

Tip: I use Adblock Plus on desktop, and AdGuard on iPhone and iPad.

I've used the AdGuard browser extension for a long time, and like it a lot, but I was browsing the AdGuard website (adguard.com, the official one) and when scrolling through the welcome page, I found a button labeled "Download" instead of "Install" the the rest, now, I have Firefox set to always ask when a website tries to download something, and it's the official AdGuard website, so I figured it was safe to satisfy my curiosity

AdGuard DNS - I found the filtering ability of Covenant Eyes somewhat underwhelming, so instead I use AdGuard DNS. In case you don't know, DNS (Domain Name Server) filtering is incredibly useful for blocking porn. Furthermore, if you pay for AdGuard VPN, you get AdGuard DNS thrown in for free (so you get privacy AND web filtering). AdGuard has other products as well that can be used in conjunction with the VPN and DNS servers. (adguard.com)

I use Firefox with uBlock Origin on the Mac and it works great, but for Safari the best option I've found is AdGuard (https://adguard.com). However, it is nowhere near as effective as uBlock Origin since Safari did the Manifest V3 thing.

Adguard: https://github.com/AdguardTeam/AdguardBrowserExtension/blob/master/README.md

There's nothing that offers all these features and is free. But if you'd like to try Orion browser by Kagi [1], you can install uBlock Origin and many other web extensions for it on Mac, iOS and iPadOS. A paid alternative that is similar (at least for blocking specific elements) is AdGuard [2].

[1]: https://browser.kagi.com/

[2]: https://adguard.com/

Please don't! But if you do decide to use other websites, ensure you have an adblocker/anti-malware protection installed like AdGuard, uBlock Origin, or MalwareBytes, or access the websites via a free VM like VirtualBox, Microsoft's Application Guard, or iOS Safari on iPhone.

I use this, works for apps as well. Never showed an ad on apps. Enjoy ad free streaming. https://adguard.com

If you would like to do the same, install TamperMonkey for Chrome, GreaseMonkey for Firefox, NinjaKit for Safari, Violent Monkey for Opera, or AdGuard for Internet Explorer (in Advanced Mode), then add this GreaseMonkey script.