Linux Security Cookbook

Index

A note on the digital index

A link in an index entry is displayed as the section title in which that entry appears. Because some sections have multiple index markers, it is not unusual for an entry to have several links to the same section. Clicking on any link will take you directly to the place in the text in which the marker appears.

Symbols

! (exclamation point), Discussion, Solution, Discussion

escaping for shells, Solution

excluding commands in sudoers file, Discussion

preventing file inclusion in Tripwire database, Discussion

$! variable (Perl), for system error messages, Discussion

%m format specifier to syslog to include system error messages, Discussion, Discussion

. (period), in search path, Discussion

.gpg suffix (binary encrypted files), Discussion

.shosts file, Solution

/ (slash), beginning absolute directory names, Discussion

/dev directory, Discussion

/dev/null, redirecting standard input from, Solution

/proc files, Discussion, See Also

filesystems, Discussion

networking, important files for (/proc/net/tcp and /proc/net/udp), See Also

/sbin/ifconfig, Discussion

/sbin/ifdown, Discussion

/sbin/ifup, Discussion

/tmp/ls (malicious program), Discussion

/usr/share/ssl/cert.pem file, Solution

/var/account/pacct, Discussion

/var/log/lastlog, Discussion

/var/log/messages, Discussion

/var/log/secure, Discussion

unauthorized sudo attempts, listing, Discussion

/var/log/utmp, Discussion

/var/log/wtmp, Discussion

: (colons), current directory in empty search path element, Discussion

@ character, redirecting ...