In today’s world cyber theft has taken a toll and only being able to put up your program and make it run is not the sole criteria. Your application should be safe and well-guarded from the cyber thieves and this can be done by the various ways of server protection techniques. Below are the various security measures that you should configure your applications with before you run it online.
SSH keys: SSH keys are an alternative to logins which are password based. They are actually a pair of keys which are cryptographic that are used to authenticate an SSH server without a password based login. Before authenticating 2 keys are generated, a private key and a public key. The public key is known by everyone and the private key is kept secret. The public key has to be kept in a special directory for authenticating with SSH key authentication. When a user connects to a server, the client has to show proof to the server that he or she has the associated private key. If the private key matches, then the user can connect to the server without the need of a password. SSH key authentication lets you run a password free authentication and is much more secure because passwords are less bit codes and latest technology has made it possible for hardware or software to hack into the server by giving all possible codes until the correct code is obtained. In SSH key encryption, the keys are very large bit entities and still now technology has not made it possible to hack such large bits of code. They will take a lot of time to find the correct combination which is practically impossible.
Firewalls: Restricting access from user over some ports and allowing access on some which are supposed to be public is done by Firewalls. It is a piece of hardware or software that monitors and controls the services to a network. There are internet services that can only be accessed from within a server and not exposing the services to the whole world. There are some private services also where the server is only accessible to authorized persons only or public services where everyone can access whoever is using the internet from any account or any location. Firewalls are very important part of the configuration of a server. Though services have security features but firewalls provide an extra level of protection to your servers.
Private Networking and VPNs: Networks that are only available to fixed users or servers are called Private Networks. VPN are networks that shows the connections are locally connected but in reality the computers are located remotely. This allows secure connection of remote users or servers and configure the entities as Private Network. Securing by VPN allows you to access databases that can only be visible by your servers. Fully secure and private communication. VPN initial setup is a bit complex than the others but it is worth because it gives more security.
PKI and SSL/TSL Encryption: PKI or Public Key Infrastructure is used to manage, create or validate for encrypting communications and identifying individuals. SSL/TCL are used to authenticate multiple entities with one another. When the authentication is done it can be used to encrypt the communication.
Service Auditing: Still now we discussed how to improve the security by encryptions and authenticating the user but security also is about analyzing your systems and finding out the possible weak areas and closing them so that attacks does not happen. This is the way to find the flaws in your own servers and fixing them.
Intrusion detection systems: IDS is a software which keeps track of who are entering your server or using the services of your server and checks that they are authorized or not. Generally, they use file auditing systems for checking the change in the system.
Isolation Execution Environments: It is a method where individual components are made to run in their own space. This is done to separate components to respective servers.