-
What is ssh and why is it so important to Linux?
-
A look at SSH server, SSH client, password vs. public/private key authorization and ssh-agent.
-
-
SSH is great, but how do we make it more secure?
-
How to lock down SSH and SSH features. Explore allowing certain users, disallowing root, disallowing passwords, disallowing X forwarding and more.
-
-
TCP Wrappers
-
Using TCP wrappers to further secure SSH.
-
-
Hiding your SSH (or other daemons) with knockd
-
How to set up port knocking to hide your daemons.
-
Syllabus
Syllabus
Course description
SSH is the sysadmin’s best friend. We will look at some basics of SSH and how to use it to authenticate to remote servers, both with and without passwords. Securing SSH servers is very important, and we will review the various ways to lock down this criti
Meet the author
Jason Welsh started experimenting with Linux back in 1994 when it was still packaged on floppy disks. Over the years, he has run just about every flavor of Linux there is as well as a few years trying out FreeBSD.
He has been administering Solaris and Linux systems professionally since around 2003, supporting everything from Linux running on server hardware to storage to VPNs and firewalls. He‚Äôs always on the lookout for new and exciting things to try out in his home lab, which runs a Proxmox server. He’s tolerant of all Linux distributions, but the current favorite is Arch or Manjaro Linux.
Associated NICE Work Roles
All Infosec training maps directly to the NICE Workforce Framework for Cybersecurity to guide you from beginner to expert across 52 Work Roles.
- Exploitation Analyst
- Cyber Operator
- Law Enforcement / Counterintelligence Forensics Analyst
You're in good company
We use Infosec Skills to provide continuous training to our technicians and to prepare them for various certifications. Infosec Skills allows us to create personalized training programs that focus on each of our technicians’ particular roles and see their progress as they take courses. We also, recommend it to clients to make their IT support teams better.
Caleb Yankus
This has been utilized to bridge the skills gap across our cyber team and to aid them as they prepare for their various certifications. It also has provided a nice learning foundation for our various cyber team members to utilize as we continue to find ways for cross-utilization with operations while minimizing the downtime needed to ensure everyone’s knowledge is the same.
Daniel Simpson
We use Infosec Skills to provide base level knowledge for employees. We also use the services to provide in depth learning for employees as they encounter new technologies. If an employee is is assigned to a new project, we can rely on Infosec Skills to provide a rapid concentrated learning environment. This rapid concentrated learning positions our employees for success.
Infosec Skills Teams client
Plans & pricing
-
Infosec Skills Personal
- 190+ role-guided learning paths (e.g., Ethical Hacking, Threat Hunting)
- 100s of hands-on labs in cloud-hosted cyber ranges
- Custom certification practice exams (e.g., CISSP, Security+)
- Skill assessments
- Infosec peer community support
-
Infosec Skills Teams
- Team administration and reporting
- Dedicated client success manager
-
Single sign-on (SSO)
Easily authenticate and manage your learners by connecting to any identity provider that supports the SAML 2.0 standard.
-
Integrations via API
Retrieve training performance and engagement metrics and integrate learner data into your existing LMS or HRS.
- 190+ role-guided learning paths and assessments (e.g., Incident Response)
- 100s of hands-on labs in cloud-hosted cyber ranges
- Create and assign custom learning paths
- Custom certification practice exams (e.g., CISSP, CISA)
- Optional upgrade: Guarantee team certification with live boot camps
Unlock 7 days of free training
- 1,400+ hands-on courses and labs
- Certification practice exams
- Skill assessments
Award-winning training that you can trust
