From the course: LPIC-2 Linux Engineer (202-450) Cert Prep
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Restricting access to SSH - Linux Tutorial
From the course: LPIC-2 Linux Engineer (202-450) Cert Prep
Restricting access to SSH
- SSH is a pretty secure protocol by default, but did you know you can make it even more secure? Stick around and we'll show you how. (upbeat ambient music) - You are watching ITProTV. - Welcome back, I'm your host Sophie here with Don for More LPIC and this episode is all about restricting access to SSH. So can you give us kind of a 10,000 foot view of what we're going to talk about? - Sure you know SSH, like you said, it's pretty secure, but there are things we can do to improve the security in it. And so this episode we're going to run through a few things. We'll look at some default settings and weigh what we can strengthen them. We'll see how we can restrict the amount of users that are able to even use SSH to get in and specifically look at the root user account and how we can protect that. We'll also cover one extra technology called TCP wrappers, which are on the exam, not used so much in real life land anymore, but still a useful thing to learn, especially as you get ready…
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Building a router with iptables19m 18s
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Configuring port forwarding with iptables17m 51s
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Using iptables as a firewall18m 49s
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Building an FTP server with vsftpd20m 42s
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Building an FTP server with Pure-FTPd17m 47s
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Restricting access to SSH13m 56s
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Enabling certificate authentication in SSH16m 22s
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Blocking brute force attacks with Fail2ban20m 17s
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Scanning for open ports with Nmap16m 36s
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Building a VPN server with OpenVPN15m 38s
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Configuring an OpenVPN client15m 28s
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