In this case, it sends the output of the ps -ef command to the grep command. It is used to redirect the output of one command to the input of another. The pipe symbol | is a key component of this command. This includes additional details such as the UID, PID, PPID, C, STIME, TTY, TIME, and CMD. The -f option instructs ps to display full format listing. The -e option tells ps to display all processes, not just those associated with the current user. The -ef option is used in conjunction with the ps command. It provides information such as the process ID (PID), the time the process has been running, the command that started the process, and more. Should a rogue process not work correctly with NPM or Node.The ps command is used in Linux to list the currently running processes. NPM commands are the best way to manage scripts and packages and there are several to help do so. Npm restart: Restarts the specified package. Npm run-script: Starts the specified script. Npm ls: List the installed packages to determine if you need to install a package before you run it. Here are some useful commands to interact with installed packages: Working with Node.JS is easier when NPM is installed. Starting, Stopping, and Restarting Node.JS on Ubuntu 22.04 There is no guarantee that a hacker won’t find another way in, so use the other methods in this list as well to secure your application. A security linter helps locate the vast majority of security issues. A security linter specifically looks for security issues in code. These patterns can show if a hacker is interested in your site.Ĭheck code using a security linter: A linter is an essential tool that helps improve code. Keeping track of every transaction may seem like overkill, but it often surfaces patterns in transactions. Maintain server-side logs and monitor them: Server-side logging ensures that administrators know what is going on with their servers. These include relying on strict transport security, displaying content in frames, and preventing Multipurpose Internet Mail Extensions (MIME) type from changing. This conveys enough information for the user to make a correction without giving too much away.Īdd HTTP response headers: An HTTP response header adds security that forces the user’s browser to take various actions. Use a message like “Invalid Input” instead. It tells the hacker that the name supplied was valid and reduces the amount of work the hacker must perform to gain access to the system. Keep error messages generic: Error messages such as “Password Invalid” provide too much information. Using a specially configured library like dotenv makes it possible to load and store environment variables in a secure manner. Keep secrets secret: Storing sensitive information like database connection strings and API keys in code is a bad idea. Validate user inputs: Node.JS is vulnerable to injection-based attacks, so it’s essential to verify that the user is sending data, and not an executable script. In fact, NPM comes with a wealth of commands. Set package access levels: One of the reasons to install a package manager like NPM is to control who can access packages and how they do so. Basically, the reverse proxy receives the user request, vets it to ensure the request is valid, and only then passes it to the Node.JS application. Use a reverse proxy: A reverse proxy is a specialized kind of web server that makes it possible to do things like limit the number of requests a Node.JS application can receive. The best practice is to use a tool such as Okta or OAuth for authentication. Use strong authentication: The first line of defense for your application is to ensure that the user is not a hacker. Instead, run Node.JS with only the rights needed for the specific application in question. Running code as the root user means the hacker has a valuable resource to break everything else down. This list provides basic steps you can use to make your instance of Node.JS more secure:ĭo not run Node.JS as the root user: Assume that a hacker gains access to your system. Installing Node.JS without following best practices is an open invitation to hackers. Node.JS provides a powerful scripting engine that could be misused by others. You can find the procedure for working with NVM here. This is so it can test scripts using multiple Node.JS versions. The Node Version Manager supports multiple versions of Node.JS on a single system. The output should display version 9.5.1 or above.
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