IPMON(5) File Formats Manual IPMON(5)

ipmon, ipmon.conf - ipmon configuration file format

The format for files accepted by ipmon is described by the following grammar: 

"match" "{" matchlist "}" "do" "{" doing "}" ";"
matchlist ::= matching [ "," matching ] .
matching  ::= direction | dstip | dstport | every | group | interface |
              logtag | nattag | protocol | result | rule | srcip | srcport .
dolist ::= doing [ "," doing ] .
doing  ::= execute | save | syslog .
direction ::= "in" | "out" .
dstip     ::= "dstip" "=" ipv4 "/" number .
dstport   ::= "dstport" "=" number .
every     ::= "every" every-options .
execute   ::= "execute" "=" string .
group     ::= "group" "=" string | "group" "=" number .
interface ::= "interface" "=" string .
logtag    ::= "logtag" "=" string | "logtag" "=" number .
nattag    ::= "nattag" "=" string .
protocol  ::= "protocol" "=" string | "protocol" "=" number .
result    ::= "result" "=" result-option .
rule      ::= "rule" "=" number .
srcip     ::= "srcip" "=" ipv4 "/" number .
srcport   ::= "srcport" "=" number .
type      ::= "type" "=" ipftype .
ipv4      ::= number "." number "." number "." number .
every-options ::= "second" | number "seconds" | "packet" | number "packets" .
result-option ::= "pass" | "block" | "short" | "nomatch" | "log" .
ipftype ::= "ipf" | "nat" | "state" .

In addition, lines that start with a # are considered to be comments.

The ipmon configuration file is used for defining rules to be executed when logging records are read from /dev/ipl.

At present, only IPv4 matching is available for source/destination address matching.

Each rule for ipmon consists of two primary segments: the first describes how the log record is to be matched, the second defines what action to take if there is a positive match. All entries of the rules present in the file are compared for matches - there is no first or last rule match.

/dev/ipl
/dev/ipf
/dev/ipnat
/dev/ipstate
/etc/ipmon.conf

ipmon(8), ipl(4)
BSD