IRCTC is upgrading its e-ticketing website from TLS 1.1 to TLS 1.2 Security Level.
IRCTC has been informing all his passengers that “To enhance the security features on IRCTC e-ticketing website www.irctc.co.in, it is being migrated to TLS 1.2. TLS 1.2 is not supported in older versions of operating systems like Windows XP & Windows Server 2003. After migration IRCTC e-ticketing website will not be accessible in Windows XP and Windows server 2003. Users may upgrade their operating systems higher than Windows XP/Server 2003.”
Please review Supported Operating systems tabulated below:
What is TLS
Transport Layer Security (TLS), and its now-deprecated predecessor, Secure Sockets Layer (SSL), are cryptographic protocols designed to provide communications security over a computer network. Several versions of the protocols find widespread use in applications such as web browsing, email, instant messaging, and voice over IP (VoIP). Websites can use TLS to secure all communications between their servers and web browsers as explained in Wikipedia.
Why IRCTC is moving to TLS 1.2
The latest PCI compliance standards require that any site accepting credit card payments uses TLS 1.2 after June 30, 2018. Even though you have some time before TLS 1.2 is required for PCI compliance, most internet services are moving to require the support of TLS 1.2 earlier. Services such as PayPal, Authorize.net, Stripe, UPS, FedEx, and many others already support TLS1.2 and have announced that they will eventually refuse TLS 1.0 connections.