Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 521
Alerts This Week
Warning Icon 1 521

Master OpenSSH: Secure Data Transmission Over Insecure Networks

Calendar Oct 22, 2001 • User Avatar Anthony Pell
1 min read
General Esm H446
Topics%20covered

Topics Covered

network security encryption cryptography data transmission openssh secure communications
Computer networks are an inherently insecure medium. Unless you are assured that your packets will never pass through a router or computer which you do not have direct control over, your data is not safe. It may be viewed by an . . . Computer networks are an inherently insecure medium. Unless you are assured that your packets will never pass through a router or computer which you do not have direct control over, your data is not safe. It may be viewed by an untrustworthy sysadmin or script kiddie, it may be tampered with en route, or it may be intercepted and replaced with entirely different data. With the new legislation which is being introduced to Congress in the name of fighting terrorism, the situation becomes worse. Now, more than ever, strong encryption and authentication are of paramount importance. In this article I will introduce the basics of cryptography and show the basic and advanced usage of OpenSSH, a free implementation of SSH Communications' Secure Shell tool.