As a rule, we must protect any open interfaces to our hosts against unauthorized access attempts. Restricting SSH to the local network is one way to do that. We look at how to set firewall rules and configure SSH itself.
Also find me here:
Baeldung Editor
Ashley Frieze
I've been writing software since I was a kid, and have been doing it professionally since the days of dial-up internet. These days I'm a consultant, helping teams with full stack cloud projects in Java and TypeScript. When I'm not software engineering, I can be found performing as a stand-up comedian, or in musical theater.
Here's what I've reviewed (so far):
Baeldung on Linux
- All
- Files (18)
- Scripting (13)
- Administration (11)
- Security (5)
- Processes (5)
- Filesystems (5)
- Web (4)
- File Viewing (4)
- Networking (3)
- Network Configuration (3)
- Search (2)
- Package Management (2)
- File Editing (2)
- Docker (2)
- User Administration (1)
- Text Processing (1)
- Installation (1)
- File Searching (1)
- File Permissions (1)
- File Conversion (1)
- File Compression (1)
- Building (1)
- Boot Process (1)
List Supported Glyphs for a Font in Linux
Filed under Files
Fonts are collections of glyphs which map to characters that can be output. We look at how to build a script to show all the glyphs available in font files in Linux.
Setup DKIM, Postfix, and Mailman on Ubuntu
Filed under Installation, Web
We can build a secure email server by combining the capabilities of DKIM, Postfix, and Mailman. We look at how to set them up and get them working together.
How to Run BASIC Code in the Linux Terminal
We look at a couple of common implementations of Basic, how to install them, and how to run BASIC programs.
Fixing HTTPS Download Errors With wget
Filed under Web
When using wget to download files over https we may encounter some SSL errors. Learn how to resolve them.
Guide to Linux file Command With Examples
Filed under File Viewing
We can inspect the type of a file on our Linux filesystem using the Linux file command. We look at a few common use cases.
Guide to Linux ls Command With Examples
Filed under Files
The ls command shows us the files in a directoy. We look at many of its additional options that help us customise its output.
How to Remove Arduino Completely
Filed under Administration
You may wish to remove the Arduino software from your Linux system to clean up or to enable a fresh re-install. Explore a few ways to achieve this, depending on how it was originally installed.
Equivalent for “Set” Data Structure in Bash
Filed under Scripting
While Bash does not explicitly support a set collection type, it can still perform set operations. We look at a few ways to achieve this with Bash and other Linux tools.