Linux, Windows, Security, Programming, Network Tutorials
Ssh is a secure and popular protocol for managing different types of IT devices like Linux systems, network devices, etc. What makes ssh secure is the encryption of network traffic. Network traffic is encrypted with different types of encryption algorithms. There is also user authentication done with encryption algorithms. These algorithms need keys to operate. … Read more
Hi, x509 certificates are used widely by a lot of applications. Generating x509 certificates seem to be hard and rocket science, but it is not. We will generate a key named t1.key and then create a signing request from this key. After that, to sign our request we will generate a self-signed CA key and … Read more
RSA is an algorithm used for Cryptography. It was patented until 2000 in the USA (not the whole world) where now it can be used freely. RSA has a lot of usage examples but it is mainly used for encryption of small pieces of data like key and Digital signatures. RSA is based integer factorization … Read more
GnuPG or GPG is Gnu version of Open PG standard implementation. It is very popular especially at personal use for mails etc. Here I will look basic usage of gpg2 in Linux command line interface. gpg2 is the second major version of gpg. Create/Generate Private GPG Keys Here we will create public and private keys … Read more
I have a remote repository which is Git. I want to connect to Git over ssh because there are problems with the firewall rules in our work environment. How can use ssh to connect remotely to Git with specifying ssh keys for this Git operations. Using ssh-agent ssh-agent will create and temprorary environment where tkey is … Read more
I work on Ubuntu and want to use multiple ssh keys to connect different serves. I have tried some different method but unluckily they have failed. How can I use multiple ssh keys? Multiple Hosts Multiple Keys Ssh config resides in .ssh/config file in user home directory. The magic is here. Host cen1 cen1.example.com HostName cen1.example.com IdentityFile ~/.ssh/cen1_rsa … Read more
Ssh is a protocol designed to make network connections between hosts secure. Ssh is a defacto standard for Linux and related operating systems. Ssh encrypts the connection between sides. Ssh gives terminal access between host and server. To get a terminal there need to be an authentication process. The authentication process is generally password-based but … Read more