ip_options

#
############################################################################
#
# File: ip_options (/etc/psad/ip_options)
#
# Purpose: To define the signature language interface for psad to detect
#          suspicious IP options (source routing, etc.). This emulates
#          (and extends) the "ipopts" keyword functionality available in
#          the Snort IDS.
#
############################################################################
#

#  <option value> <length (-1 for variable)> <ipopts argument> <description>
0    1   eol         End of options list
1    1   nop         NOP
130  11  sec         Security
131  -1  lsrr        Loose Source Route
### (lsrre is included in Snort but not documented anywhere else)
132  -1  lsrre       Loose Source Route
68   -1  ts          Timestamp
133  -1  extsec      Extended Security
134  -1  comsec      Commercial Security
7    -1  rr          Record Route
136  4   satid       Stream Identifier
137  -1  ssrr        Strict Source Route
10   -1  expm        Experimental Measurement
11   4   mtu         MTU Probe
12   4   mtur        MTU Reply
205  -1  expflow     Experimental Flow Control
142  -1  expaccess   Experimental Access Control
144  -1  imitraf     IMI Traffic Descriptor
145  -1  extproto    Extended Internet Proto
82   12  traceroute  Traceroute
147  10  addrext     Address Extension
148  4   ralert      Router Alert
149  -1  sbrdcast    Selective Directed Broadcast Mode
150  -1  nsapaddr    NSAP Addresses
151  -1  dpktstate   Dynamic Packet State
152  -1  umcast      Upstream Multicast Packet