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Correcting prerouting and postrouting search filter for more precise results

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This commit is contained in:
Gyorgy Berenyi
2022-03-10 20:31:47 +00:00
parent 0641ee0458
commit a60422cfe6
1 changed files with 2 additions and 2 deletions
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firewall/firewall-add
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@@ -60,7 +60,7 @@ IPTABLES=/sbin/iptables-legacy
###############################
prerouting() {
LINES=$($IPTABLES -L --line-number -n | grep $COMMENT | grep DNAT |awk '{print $1}'| tac)
LINES=$($IPTABLES -L --line-number -n | grep $COMMENT | grep $SOURCE_IP | grep $SOURCE_PORT |grep $TARGET_IP |grep $TARGET_PORT | grep awk '{print $1}'| tac)
debug "Previous prerouting lines: "$LINES
# DELETE UNECESSARY LINES FROM PREVIOUS RULES
if [ -n "$LINES" ] ; then
@@ -76,7 +76,7 @@ prerouting() {
}
postrouting() {
LINES=$($IPTABLES -L --line-number -n | grep $COMMENT | grep MASQUERADE | awk '{print $1}'| tac)
LINES=$($IPTABLES -L --line-number -n | grep $COMMENT | grep $TARGET_IP | grep MASQUERADE | awk '{print $1}'| tac)
debug "Previous postrouting lines: "$LINES
# DELETE UNECESSARY LINES FROM PREVIOUS RULES