lets (22)


can you put SSL on a IP address or only on a web server's domain name?

can you put SSL on a IP address or only on a web server's domain name?

In a web application, if it doesn't have a domain name(like a web service for example), can you still add a SSL certificate to a IP address? If yes, how?…


regex - Why doesn't this pattern work in egrep?

Why can't I match the string "1234567-1234567890" with the given regular expression \d{7}-\d{10} with egrep from the shell like this: egrep \d{7}-\d{10} file ?…


oop - Monopoly game in OOD?

I found this interesting blog post via CodingHorror: My Favorite Interview Question. In a nutshell, he talks about the object-oriented design challenges of designing the game of Monopoly, with an emph…



javascript - How can I detect visited and unvisited links on a page?

My aim is to detect the unvisited links on a webpage and then create a greasemonkey script to click on those links. By unvisited links here I mean the links which are not opened by me. Since I can see…


Why this 0 in((type*)0)->member in C?

The container_of() macro in the Linux kernel is defined as:#define container_of(ptr, type, member)({ \ const typeof(((type*)0)->member)*__mptr=(ptr);\(type*)((char*)__mptr-of…


ios - this certificate was signed by an unknown authority

I need to create ipa file for testing purposes. I go to Keychian access-> Certificate assistant-> Request a certificate from a certificate authority and create some.certSigningRequest file. Then I u…


regex - What is the most efficient case-insensitive grep usage?

My objective is to match email addresses that belong to the Yahoo! family of domains. In*nix systems(I will be using Ubuntu), what are the benefits and drawbacks to any one of these methods for matc…


openshift and let's encrypt certificates

Is there any integration for Let's Encrypt in OpenShift(or, is this planned)? Let's encrypt are going to issue certs that expire in 90 days[1]-- and a big part of their plan is to have automation s…


Does Java support Let's Encrypt certificates?

I am developing a Java application that queries a REST API on a remote server over HTTP. For security reasons this communication should be switched to HTTPS. Now that Let's Encrypt started their publi…


ssl certificate - Let's Encrypt Failing DVSNI Challenge

I'm trying to configure Let's Encrypt certificates on a server that is publically accessible. Originally, the server was hiding behind a router, but I have since forwarded ports 80 and 443. The certif…




the encrypt letsencrypt you not certificate ssl for example working