/usr/share/doc/samhain/manual.html/file-signatures.html is in samhain 3.1.0-5ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>File signatures</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="The Samhain Host Integrity Monitoring System"
HREF="index.html"><LINK
REL="UP"
TITLE="Configuring samhain, the host integrity monitor"
HREF="file-monitor.html"><LINK
REL="PREVIOUS"
TITLE="Available checksum functions"
HREF="hash-function.html"><LINK
REL="NEXT"
TITLE="Defining file check policies: what, and how, to monitor"
HREF="filedef.html"><LINK
REL="STYLESHEET"
TYPE="text/css"
HREF="./docbook.css"></HEAD
><BODY
CLASS="SECT1"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><!--#if expr="! ($HTTP_USER_AGENT = /MSIE/)"--><!--#include virtual="/resources/ssi/header.html"--><!--#endif --><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>The Samhain Host Integrity Monitoring System</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="hash-function.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Chapter 5. Configuring <SPAN
CLASS="APPLICATION"
>samhain</SPAN
>, the host integrity monitor</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="filedef.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="FILE-SIGNATURES"
>5.3. File signatures</A
></H1
><P
> <SPAN
CLASS="APPLICATION"
>samhain</SPAN
> works by generating a
database of <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>file signatures</I
></SPAN
>, and
later comparing file against that database to recognize file modifications
and/or added/deleted files.</P
><P
> File signatures include:</P
><P
><P
></P
><UL
><LI
><P
> a 192-bit cryptographic checksum computed using the TIGER hash
algorithm (alternatively SHA-1, MD5, or SHA2-256 can be used),
</P
></LI
><LI
><P
> the inode of the file,
</P
></LI
><LI
><P
> the type of the file,
</P
></LI
><LI
><P
> owner and group,
</P
></LI
><LI
><P
> access permissions,
</P
></LI
><LI
><P
> on Linux only: flags of the ext2 file system
(see <B
CLASS="COMMAND"
>man chattr</B
>),
</P
></LI
><LI
><P
> the timestamps of the file,
</P
></LI
><LI
><P
> the file size,
</P
></LI
><LI
><P
> the number of hard links,
</P
></LI
><LI
><P
> minor and major device number (devices only)
</P
></LI
><LI
><P
> and the name of the linked file (if the file is a symbolic link).
</P
></LI
></UL
></P
><P
> Depending on the policy chosen for a particular file, only a subset of these
may be checked for modifications (see <A
HREF="filedef.html#POLICY"
>Section 5.4.1</A
>>), but
usually all these informations are collected.</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="hash-function.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="filedef.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Available checksum functions</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="file-monitor.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Defining file check policies: what, and how, to monitor</TD
></TR
></TABLE
></DIV
><!--#if expr="! ($HTTP_USER_AGENT = /MSIE/)"--><!--#include virtual="/resources/ssi/footer.html"--><!--#endif --></BODY
></HTML
>
|