HTTP Public Key Pinning (HPKP) – Windows Server IIS

HPKP is another security mechanism that uses an HTTP header as protection against impersonation attacks with fraudulently issued certificates. To Read More …

IE – “Sites” and “Custom Level” slider are grayed out

It can be observed that in many PCs the Custom Level button in the Security tab of Internet Options in Read More …

Internet Explorer Browser Modes

Browser modes have been provided since IE8 to help developers fix issues quickly by telling a site to render like Read More …

“ASN1 bad tag value met” error when processing a certificate request in IIS 7

Sometimes, during a “Complete Certification Request…” process, you could face the following error message on 64-bit servers when IIS 7.0 Read More …

Turning off and on Enhanced Protected Mode on Internet Explorer

Enhanced Protected Mode (EPM) adds additional security to Protected Mode and includes AppContainer and 64-bit tabs. Internet Explorer in the Read More …

UserAgents on Internet Explorer (registry workaround)

About the User-Agent String The User-Agent (or UA) string is sent along in the headers of every HTTP request so Read More …

What is reverse DNS and do I need it?

Reverse DNS is IP address to domain name mapping – the opposite of forward (normal) DNS which maps domain names Read More …

Clear the Internet Explorer History Folder and Cookies

Scenario You visited a great web site on Thursday, but forgot to bookmark the URL. Now it’s Sunday and you Read More …

Error Internet Explorer from secure websites: “filename couldn’t be downloaded”

Problem You cannot download files or to view files from a website when you connect to the site over HTTPS Read More …