lsat(1) a security auditing tool


lsat [OPTION]


Linux Security Auditing Tool (LSAT) is a post install security auditing tool. It is modular in design, so new features can be added quickly. It checks inetd entries and scans for unneeded RPM packages. It is being expanded to work with Linux distributions other than Red Hat, and checks for kernel versions.

Output is in lsat.out. On subsequent runs, previous output is in lsat.old.


        diff current and old md5 runs, output in lsatmd5.diff

-m <distribution>         Force a specific distribution test
        Names are: redhat, debian, mandrake, solaris, gentoo

-h         Show LSAT help

        Show LSAT advanced help

-o <filename>         Output filename, default is last.out

-r         Check rpm integrity. RedHat or Mandrake only.

-s         Be silent. No output at all.

-x <filename>
        Filename is a text file consisting of modules to
        exclude from being run. This should be a comma,
        tab or newline delimited file, with just the name(s)
        below one wishes to exclude.
        Module names (with a small description) are:

        bpass           check for bootloader passwd
        cfg             check runlevel daemons (redhat) 
        dotfiles        check for dotfiles
        files           check for sticky bits, etc
        forward         check for network forwarding
        ftpusers        check ftpusers file for bad entries
        inetd           check for unneeded services
        inittab         check runlevel, etc.
        ipv4            check for other things in ipv4
        issue           check issue banner
        kbd             check kbd/login perms
        limits          check limits file
        logging         check for enough logging
        md5             perform md5 of all files on sys
        modules         check for loadable kern mod.
        net             check network
        open            check open files
        passwd          check passwd file for bad entries
        perms           check permissions on files
        pkgs            check for unwanted packages
        promisc         are we in promisc mode?
        rc              check for unwanted rc files
        rpm             perform rpm integrity check
        securetty       check secure tty
        set             check for SUID files
        ssh             check ssh config
        startx          check for tcp listening in X
        umask           check default umask
        write           check world read/write files
        www             output in html

-v         Be verbose about it.

        Output file is in html format.


Current modules are checkbpass, checkdotfiles, checkfiles, checkftpusers, checkhostsfiles, checkinetd, checkipv4, checkissue, checkkbd, checklimits, checkmodule, checkmd5, checknet, checknetforward, checknetp, checkopenfiles, checkpasswd, checkperms, checkpkgs, checkrc, checkrpm, checksecuretty, checkset, checkssh, checkumask, checkwrite and checkwww. A breif description is included in each module. Writing a module is fairly easy and straightforward. See README.modules for more information.


This software is licensed under the GNU/GPL, please see for more details.


Doesn't correct the problems that it discovers (yet). Running on Solaris is not fully functional.


Robert Minvielle <number9 at www dot dimlight dot org> If that fails, <triode at users dot sourceforge dot net>