Security on the go
It's time to question some security assumptions. Regular users' systems are always on an internal network with a firewall between them and the Internet. The only hosts reachable from the outside are a few bastion hosts. Bastion hosts run a strictly limited set of software, and only sysadmins have accounts on them. Computer security depends on physical security, because anyone who breaks into the server room can boot the server from a rescue disk and have his or her way with the files.
By Don Marti at Linux Journal.
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