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Changed iptables to not lookup hosts

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Should be faster lookup on iptables if firewall rules contain lots
of host IP addresses (no need for a DNS lookup on each one!)
This commit is contained in:
Michael 2016-08-22 20:14:34 +01:00
parent dab9a210c2
commit 56f079289e
1 changed files with 2 additions and 2 deletions
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4
openvpn-install.sh
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@ -138,7 +138,7 @@ if [[ -e /etc/openvpn/server.conf ]]; then
firewall-cmd --permanent --zone=public --remove-port=$PORT/udp firewall-cmd --permanent --zone=public --remove-port=$PORT/udp
firewall-cmd --permanent --zone=trusted --remove-source=10.8.0.0/24 firewall-cmd --permanent --zone=trusted --remove-source=10.8.0.0/24
fi fi
if iptables -L | grep -qE 'REJECT|DROP'; then if iptables -L -n | grep -qE 'REJECT|DROP'; then
sed -i "/iptables -I INPUT -p udp --dport $PORT -j ACCEPT/d" $RCLOCAL sed -i "/iptables -I INPUT -p udp --dport $PORT -j ACCEPT/d" $RCLOCAL
sed -i "/iptables -I FORWARD -s 10.8.0.0\/24 -j ACCEPT/d" $RCLOCAL sed -i "/iptables -I FORWARD -s 10.8.0.0\/24 -j ACCEPT/d" $RCLOCAL
sed -i "/iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT/d" $RCLOCAL sed -i "/iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT/d" $RCLOCAL
@ -310,7 +310,7 @@ crl-verify crl.pem" >> /etc/openvpn/server.conf
firewall-cmd --permanent --zone=public --add-port=$PORT/udp firewall-cmd --permanent --zone=public --add-port=$PORT/udp
firewall-cmd --permanent --zone=trusted --add-source=10.8.0.0/24 firewall-cmd --permanent --zone=trusted --add-source=10.8.0.0/24
fi fi
if iptables -L | grep -qE 'REJECT|DROP'; then if iptables -L -n | grep -qE 'REJECT|DROP'; then
# If iptables has at least one REJECT rule, we asume this is needed. # If iptables has at least one REJECT rule, we asume this is needed.
# Not the best approach but I can't think of other and this shouldn't # Not the best approach but I can't think of other and this shouldn't
# cause problems. # cause problems.