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Change LOGMARKER/LOGFORMAT Implementation

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git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@566 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
This commit is contained in:
teastep 2003-05-21 21:36:05 +00:00
parent f96c06d949
commit e33573eff9
5 changed files with 113 additions and 113 deletions
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3
Shorewall/changelog.txt
View File

@ -2,3 +2,6 @@ Changes since 1.4.3a
1. Implement REDIRECT-. 1. Implement REDIRECT-.
2. Change LOGMARKER to a printf mask and allow embedded spaces. Renamed
it LOGFORMAT to avoid confusion.

179
Shorewall/firewall
View File

@ -904,6 +904,40 @@ run_user_exit() # $1 = file name
fi fi
} }
#
# Add a logging rule.
#
log_rule() # $1 = log level, $2 = chain, $3 = disposition , $... = predicates for the rule
{
local level=$1
local chain=$2
local disposition=$3
local rulenum=
shift;shift;shift
eval rulenum=\$${chain}_logrules
[ -z "$rulenum" ] && rulenum=1
case $level in
ULOG)
eval iptables -A $chain $@ -j ULOG $LOGPARMS --ulog-prefix '"`printf "$LOGFORMAT" $chain $rulenum $disposition`"'
;;
*)
eval iptables -A $chain $@ -j LOG $LOGPARMS --log-prefix '"`printf "$LOGFORMAT" $chain $rulenum $disposition`"'
;;
esac
if [ $? -ne 0 ] ; then
[ -z "$stopping" ] && { stop_firewall; exit 2; }
fi
rulenum=$(($rulenum + 1))
eval ${chain}_logrules=$rulenum
}
# #
# Stop the Firewall # Stop the Firewall
# #
@ -1281,18 +1315,6 @@ setup_mac_lists() {
fi fi
done < $TMP_DIR/maclist done < $TMP_DIR/maclist
# #
# Setup Logging variables
#
if [ -n "$MACLIST_LOG_LEVEL" ]; then
if [ "$MACLIST_LOG_LEVEL" = ULOG ]; then
logpart="-j ULOG $LOGPARMS --ulog-prefix"
else
logpart="-j LOG $LOGPARMS --log-level $MACLIST_LOG_LEVEL --log-prefix"
fi
else
logpart=
fi
#
# Must take care of our own broadcasts and multicasts then terminate the verification # Must take care of our own broadcasts and multicasts then terminate the verification
# chains # chains
# #
@ -1322,8 +1344,9 @@ setup_mac_lists() {
shift shift
done done
[ -n "$logpart" ] && \ if [ -n "$MACLIST_LOG_LEVEL" ]; then
run_iptables -A $chain $logpart "${LOGMARKER}$chain:$MACLIST_DISPOSITION:" log_rule $MACLIST_LOG_LEVEL $chain $MACLIST_DISPOSITION
fi
run_iptables -A $chain -j $maclist_target run_iptables -A $chain -j $maclist_target
done done
@ -2017,21 +2040,11 @@ add_a_rule()
if [ -z "$dnat_only" -a $chain != ${FW}2${FW} ]; then if [ -z "$dnat_only" -a $chain != ${FW}2${FW} ]; then
serv="${serv:+-d $serv}" serv="${serv:+-d $serv}"
if [ -n "$loglevel" ]; then if [ -n "$loglevel" ]; then
if [ "$loglevel" = ULOG ]; then log_rule $loglevel $chain $logtarget \
run_iptables2 -A $chain $proto $multiport \ `fix_bang $proto $sports $multiport $state $cli $serv $dports`
$state $cli $sports $serv $dports -j ULOG $LOGPARMS \
--ulog-prefix "${LOGMARKER}$chain:$logtarget:"
else
run_iptables2 -A $chain $proto $multiport \
$state $cli $sports $serv $dports -j LOG $LOGPARMS \
--log-prefix "${LOGMARKER}$chain:$logtarget:" \
--log-level $loglevel
fi
fi fi
run_iptables2 -A $chain $proto $multiport $state $cli $sports \ run_iptables2 -A $chain $proto $multiport $state $cli $sports \
$serv $dports -j $target $serv $dports -j $target
fi fi
@ -2046,16 +2059,8 @@ add_a_rule()
if [ $command != check ]; then if [ $command != check ]; then
if [ -n "$loglevel" ]; then if [ -n "$loglevel" ]; then
if [ "$loglevel" = ULOG ]; then log_rule $loglevel $chain $logtarget \
run_iptables2 -A $chain $proto $multiport \ `fix_bang $proto $multiport $dest_interface $state $cli $sports $dports`
$dest_interface $state $cli $sports $dports -j ULOG \
$LOGPARMS --ulog-prefix "${LOGMARKER}$chain:$logtarget:"
else
run_iptables2 -A $chain $proto $multiport \
$dest_interface $state $cli $sports $dports -j LOG \
$LOGPARMS --log-prefix "${LOGMARKER}$chain:$logtarget:" \
--log-level $loglevel
fi
fi fi
if [ $logtarget != LOG ]; then if [ $logtarget != LOG ]; then
@ -2567,13 +2572,7 @@ policy_rules() # $1 = chain to add rules to
esac esac
if [ $# -eq 3 -a "x${3}" != "x-" ]; then if [ $# -eq 3 -a "x${3}" != "x-" ]; then
if [ "$3" = ULOG ]; then log_rule $3 $1 $2
run_iptables -A $1 -j ULOG $LOGPARMS \
--ulog-prefix "${LOGMARKER}${1}:${2}:"
else
run_iptables -A $1 -j LOG $LOGPARMS \
--log-prefix "${LOGMARKER}${1}:${2}:" --log-level $3
fi
fi fi
[ -n "$target" ] && run_iptables -A $1 -j $target [ -n "$target" ] && run_iptables -A $1 -j $target
@ -2893,16 +2892,7 @@ setup_masq()
# #
add_blacklist_rule() { add_blacklist_rule() {
if [ -n "$BLACKLIST_LOGLEVEL" ]; then if [ -n "$BLACKLIST_LOGLEVEL" ]; then
if [ "$BLACKLIST_LOGLEVEL" = ULOG ]; then log_rule $BLACKLIST_LOGLEVEL blacklst $BLACKLIST_DISPOSITION `fix_bang $source $proto $dport`
run_iptables2 -A blacklst $source $proto $dport -j \
ULOG $LOGPARMS --ulog-prefix \
"${LOGMARKER}blacklst:$BLACKLIST_DISPOSITION:"
else
run_iptables2 -A blacklst $source $proto $dport -j \
LOG $LOGPARMS --log-prefix \
"${LOGMARKER}blacklst:$BLACKLIST_DISPOSITION:" \
--log-level $BLACKLIST_LOGLEVEL
fi
fi fi
run_iptables2 -A blacklst $source $proto $dport -j $disposition run_iptables2 -A blacklst $source $proto $dport -j $disposition
@ -3238,13 +3228,7 @@ initialize_netfilter () {
createchain newnotsyn no createchain newnotsyn no
run_user_exit newnotsyn run_user_exit newnotsyn
if [ -n "$LOGNEWNOTSYN" ]; then if [ -n "$LOGNEWNOTSYN" ]; then
if [ "$LOGNEWNOTSYN" = ULOG ]; then log_rule $LOGNEWNOTSYN newnotsyn DROP
run_iptables -A newnotsyn -j ULOG $LOGPARMS \
--ulog-prefix "${LOGMARKER}newnotsyn:DROP:"
else
run_iptables -A newnotsyn -j LOG $LOGPARMS \
--log-prefix "${LOGMARKER}newnotsyn:DROP:" --log-level $LOGNEWNOTSYN
fi
fi fi
run_iptables -A newnotsyn -j DROP run_iptables -A newnotsyn -j DROP
@ -3315,14 +3299,7 @@ build_common_chain() {
# Construct zone-independent rules # Construct zone-independent rules
# #
add_common_rules() { add_common_rules() {
logdisp() # $1 = Chain Name local savelogparms=
{
if [ "$RFC1918_LOG_LEVEL" = ULOG ]; then
echo "ULOG $LOGPARMS --ulog-prefix ${LOGMARKER}${1}:DROP:"
else
echo "LOG $LOGPARMS --log-prefix ${LOGMARKER}${1}:DROP: --log-level $RFC1918_LOG_LEVEL"
fi
}
# #
# Reject Rules # Reject Rules
# #
@ -3347,16 +3324,17 @@ add_common_rules() {
createchain badpkt no createchain badpkt no
if [ -n "$LOGUNCLEAN" ]; then if [ -n "$LOGUNCLEAN" ]; then
if [ "$LOGUNCLEAN" = ULOG ]; then savelogparms="$LOGPARMS"
logoptions="-j ULOG $LOGPARMS --ulog-prefix ${LOGMARKER}badpkt:DROP:"
logoptions="$logoptions --log-ip-options"
else
logoptions="-j LOG $LOGPARMS --log-prefix ${LOGMARKER}badpkt:DROP:"
logoptions="$logoptions --log-level $LOGUNCLEAN --log-ip-options"
fi
run_iptables -A badpkt -p tcp $logoptions --log-tcp-options LOGPARMS="$LOGPARMS --log-ip-options"
run_iptables -A badpkt -p ! tcp $logoptions
log_rule $LOGUNCLEAN badpkt DROP -p ! tcp
LOGPARMS="$LOGPARMS --log-tcp-options"
log_rule $LOGUNCLEAN badpkt DROP -p tcp
LOGPARMS="$savelogparms"
fi fi
run_iptables -A badpkt -j DROP run_iptables -A badpkt -j DROP
@ -3379,16 +3357,17 @@ add_common_rules() {
[ -z"$LOGUNCLEAN" ] && LOGUNCLEAN=info [ -z"$LOGUNCLEAN" ] && LOGUNCLEAN=info
if [ "$LOGUNCLEAN" = ULOG ]; then savelogparms="$LOGPARMS"
logoptions="-j ULOG $LOGPARMS --ulog-prefix ${LOGMARKER}logpkt:LOG:"
logoptions="$logoptions --log-ip-options"
else
logoptions="-j LOG $LOGPARMS --log-prefix ${LOGMARKER}logpkt:LOG:"
logoptions="$logoptions --log-level $LOGUNCLEAN --log-ip-options"
fi
run_iptables -A logpkt -p tcp $logoptions --log-tcp-options LOGPARMS="$LOGPARMS --log-ip-options"
run_iptables -A logpkt -p ! tcp $logoptions
log_rule $LOGUNCLEAN logpkt DROP -p ! tcp
LOGPARMS="$LOGPARMS --log-tcp-options"
log_rule $LOGUNCLEAN logpkt DROP -p tcp
LOGPARMS="$savelogparms"
echo "Mangled/Invalid Packet Logging enabled on:" echo "Mangled/Invalid Packet Logging enabled on:"
@ -3425,7 +3404,9 @@ add_common_rules() {
createchain rfc1918 no createchain rfc1918 no
createchain logdrop no createchain logdrop no
run_iptables -A logdrop -j `logdisp rfc1918`
log_rule $RFC1918_LOG_LEVEL logdrop DROP
run_iptables -A logdrop -j DROP run_iptables -A logdrop -j DROP
if [ -n "$MANGLE_ENABLED" ]; then if [ -n "$MANGLE_ENABLED" ]; then
@ -3438,7 +3419,7 @@ add_common_rules() {
# #
run_iptables -t mangle -N man1918 run_iptables -t mangle -N man1918
run_iptables -t mangle -N logdrop run_iptables -t mangle -N logdrop
run_iptables -t mangle -A logdrop -j `logdisp man1918` log_rule $RFC1918_LOG_LEVEL logdrop DROP -t mangle
run_iptables -t mangle -A logdrop -j DROP run_iptables -t mangle -A logdrop -j DROP
fi fi
@ -3482,16 +3463,14 @@ add_common_rules() {
if [ -n "$TCP_FLAGS_LOG_LEVEL" ]; then if [ -n "$TCP_FLAGS_LOG_LEVEL" ]; then
createchain logflags no createchain logflags no
if [ "$TCP_FLAGS_LOG_LEVEL" = ULOG ]; then savelogparms="$LOGPARMS"
run_iptables -A logflags -j ULOG $LOGPARMS \
--ulog-prefix "${LOGMARKER}logflags:$TCP_FLAGS_DISPOSITION:" \ LOGPARMS="$LOGPARMS --log-ip-options"
--log-tcp-options --log-ip-options
else log_rule $TCP_FLAGS_LOG_LEVEL logflags $TCP_FLAGS_DISPOSITION
run_iptables -A logflags -j LOG $LOGPARMS \
--log-level $TCP_FLAGS_LOG_LEVEL \ LOGPARMS="$savelogparms"
--log-prefix "${LOGMARKER}logflags:$TCP_FLAGS_DISPOSITION:" \
--log-tcp-options --log-ip-options
fi
case $TCP_FLAGS_DISPOSITION in case $TCP_FLAGS_DISPOSITION in
REJECT) REJECT)
run_iptables -A logflags -j REJECT --reject-with tcp-reset run_iptables -A logflags -j REJECT --reject-with tcp-reset
@ -4355,7 +4334,7 @@ do_initialize() {
SHARED_DIR=/usr/share/shorewall SHARED_DIR=/usr/share/shorewall
FUNCTIONS= FUNCTIONS=
VERSION_FILE= VERSION_FILE=
LOGMARKER= LOGFORMAT=
stopping= stopping=
have_mutex= have_mutex=
@ -4482,7 +4461,7 @@ do_initialize() {
CLEAR_TC= CLEAR_TC=
fi fi
[ -n "$LOGMARKER" ] || LOGMARKER="Shorewall:" [ -n "$LOGFORMAT" ] || LOGFORMAT="Shorewall:%s:%d:%s:"
# #
# Strip the files that we use often # Strip the files that we use often

7
Shorewall/releasenotes.txt
View File

@ -9,3 +9,10 @@ New Features:
Netfilter nat table REDIRECT rule is added but not the companion Netfilter nat table REDIRECT rule is added but not the companion
filter table ACCEPT rule. filter table ACCEPT rule.
2) The LOGMARKER variable has been renamed LOGFORMAT and has been
changed to a 'printf' formatting template which accepts three
arguments (the chain name, logging rule number and the disposition).
To use LOGFORMAT with ULOG, set it as:
LOGFORMAT="fp=%s:%d a=%s"

18
Shorewall/shorewall
View File

@ -135,7 +135,9 @@ get_config() {
[ -n "$FW" ] || FW=fw [ -n "$FW" ] || FW=fw
[ -n "$LOGMARKER" ] || LOGMARKER="Shorewall:" [ -n "LOGFORMAT" ] && LOGFORMAT="${LOGFORMAT%%%*}"
[ -n "$LOGFORMAT" ] || LOGFORMAT="Shorewall:"
} }
# #
@ -261,9 +263,9 @@ packet_log() # $1 = number of messages
[ -n "$realtail" ] && options="-n$1" [ -n "$realtail" ] && options="-n$1"
grep "${LOGMARKER}\|ipt_unclean" $LOGFILE | \ grep "${LOGFORMAT}\|ipt_unclean" $LOGFILE | \
sed s/" kernel:"// | \ sed s/" kernel:"// | \
sed s/" $host $LOGMARKER"/" "/ | \ sed s/" $host $LOGFORMAT"/" "/ | \
sed s/" $host kernel: ipt_unclean: "/" "/ | \ sed s/" $host kernel: ipt_unclean: "/" "/ | \
sed 's/MAC=.*SRC=/SRC=/' | \ sed 's/MAC=.*SRC=/SRC=/' | \
tail $options tail $options
@ -734,27 +736,27 @@ case "$1" in
timeout=30 timeout=30
if [ `grep -c "$LOGMARKER" $LOGFILE ` -gt 0 ] ; then if [ `grep -c "$LOGFORMAT" $LOGFILE ` -gt 0 ] ; then
echo " HITS IP DATE" echo " HITS IP DATE"
echo " ---- --------------- ------" echo " ---- --------------- ------"
grep "$LOGMARKER" $LOGFILE | sed 's/\(.\{6\}\)\(.*SRC=\)\(.*\)\( DST=.*\)/\3 \1/' | sort | uniq -c | sort -rn grep "$LOGFORMAT" $LOGFILE | sed 's/\(.\{6\}\)\(.*SRC=\)\(.*\)\( DST=.*\)/\3 \1/' | sort | uniq -c | sort -rn
echo "" echo ""
echo " HITS IP PORT" echo " HITS IP PORT"
echo " ---- --------------- -----" echo " ---- --------------- -----"
grep "$LOGMARKER" $LOGFILE | sed 's/\(.*SRC=\)\(.*\)\( DST=.*DPT=\)\([0-9]\{1,5\}\)\(.*\)/\2 \4/ grep "$LOGFORMAT" $LOGFILE | sed 's/\(.*SRC=\)\(.*\)\( DST=.*DPT=\)\([0-9]\{1,5\}\)\(.*\)/\2 \4/
t t
s/\(.*SRC=\)\(.*\)\( DST=.*\)/\2/' | sort | uniq -c | sort -rn s/\(.*SRC=\)\(.*\)\( DST=.*\)/\2/' | sort | uniq -c | sort -rn
echo "" echo ""
echo " HITS DATE" echo " HITS DATE"
echo " ---- ------" echo " ---- ------"
grep "$LOGMARKER" $LOGFILE | sed 's/\(.\{6\}\)\(.*\)/\1/' | sort | uniq -c | sort -rn grep "$LOGFORMAT" $LOGFILE | sed 's/\(.\{6\}\)\(.*\)/\1/' | sort | uniq -c | sort -rn
echo "" echo ""
echo " HITS PORT SERVICE(S)" echo " HITS PORT SERVICE(S)"
echo " ---- ----- ----------" echo " ---- ----- ----------"
grep '${LOGMARKER}.*DPT' $LOGFILE | sed 's/\(.*DPT=\)\([0-9]\{1,5\}\)\(.*\)/\2/' | sort | uniq -c | sort -rn | \ grep '${LOGFORMAT}.*DPT' $LOGFILE | sed 's/\(.*DPT=\)\([0-9]\{1,5\}\)\(.*\)/\2/' | sort | uniq -c | sort -rn | \
while read count port ; do while read count port ; do
# List all services defined for the given port # List all services defined for the given port
srv=`grep "^[^#].*\\b$port/" /etc/services | cut -f 1 | sort -u` srv=`grep "^[^#].*\\b$port/" /etc/services | cut -f 1 | sort -u`

19
Shorewall/shorewall.conf
View File

@ -55,13 +55,22 @@
LOGFILE=/var/log/messages LOGFILE=/var/log/messages
# #
# LOG MARKER # LOG FORMAT
# #
# Used to identify Shorewall log messages.If not specified or specified as # Shell 'printf' Formatting template for the --log-prefix value in log messages
# empty (LOGMARKER="") then the value "Shorewall:" is assumed. You must not # generated by Shorewall. to identify Shorewall log messages. The supplied
# embed white space in the LOGMARKER value. # template is expected to accept three arguments; the first is the chain name,
# the second is the logging rule number within that chain and the third is the
# ACTION specifying the disposition of the packet being logged.
#
# If you want to integrate Shorewall with fireparse, then set LOGFORMAT as:
#
# LOGFORMAT="fp=%s:%d a=%s"
#
# If not specified or specified as empty (LOGFORMAT="") then the value
# "Shorewall:%s:%d:%s:" is assumed.
LOGMARKER="Shorewall:" LOGFORMAT="Shorewall:%s:%d:%s:"
# #
# LOG RATE LIMITING # LOG RATE LIMITING