1. Add method for if ipv6 is disabled.
2. Modify ipv6 iptables rules check with check_ipv6_is_enable.
This commit is contained in:
Samson-W
parent
e8459b26e0
commit
97d921c2c6
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@ -18,26 +18,68 @@ HARDENING_LEVEL=2
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IPS4=$(which iptables)
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IPS6=$(which ip6tables)
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IPV4_RET=1
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IPV6_RET=1
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IPV6_ISENABLE=1
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# Quick note here : CIS recommends your iptables rules to be persistent.
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# Do as you want, but this script does not handle this
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# This function will be called if the script status is on enabled / audit mode
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audit () {
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if [ $(${IPS4} -S | grep -E "\-m.*limit" | grep -Ec "\-\-limit-burst") -eq 0 -o $(${IPS6} -S | grep -E "\-m.*limit" | grep -Ec "\-\-limit-burst") -eq 0 ]; then
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crit "Ip4tables/Ip6tables is not set rules of protect DOS attacks!"
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FNRET=1
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# ipv4
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if [ $(${IPS4} -S | grep -E "\-m.*limit" | grep -Ec "\-\-limit-burst") -eq 0 ]; then
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info "Iptables is not set rules of protect DOS attacks!"
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IPV4_RET=1
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else
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ok "Ip4tables/Ip6tables has set rules for protect DOS attacks!"
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FNRET=0
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info "Iptables has set rules for protect DOS attacks!"
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IPV4_RET=0
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fi
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# ipv6
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check_ipv6_is_enable
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IPV6_ISENABLE=$FNRET
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if [ $IPV6_ISENABLE = 0 ]; then
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if [ $(${IPS6} -S | grep -E "\-m.*limit" | grep -Ec "\-\-limit-burst") -eq 0 ]; then
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info "Ip6tables is not set rules of protect DOS attacks!"
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IPV6_RET=1
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else
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info "Ip6tables has set rules for protect DOS attacks!"
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IPV6_RET=0
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fi
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fi
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if [ $IPV6_ISENABLE -eq 0 ]; then
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if [ $IPV4_RET -eq 1 -o $IPV6_RET -eq 1 ]; then
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crit "Iptables/ip6tables is not set rules of protect DOS attacks!"
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FNRET=1
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else
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ok "Iptables/ip6tables has set rules for protect DOS attacks!"
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FNRET=0
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fi
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else
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if [ $IPV4_RET -eq 1 ]; then
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crit "Iptables is not set rules of protect DOS attacks!"
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FNRET=1
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else
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ok "Iptables has set rules for protect DOS attacks!"
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FNRET=0
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fi
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply () {
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if [ $FNRET = 0 ]; then
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ok "Ip4tables/Ip6tables has set rules for protect DOS attacks!"
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if [ $IPV6_ISENABLE -eq 0 ]; then
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ok "Iptables/Ip6tables has set rules for protect DOS attacks!"
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else
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ok "Iptables has set rules for protect DOS attacks!"
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fi
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else
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warn "Ip4tables/Ip6tables is not set rules of protect DOS attacks! need the administrator to manually add it."
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if [ $IPV6_ISENABLE -eq 0 ]; then
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warn "Iptables/Ip6tables is not set rules of protect DOS attacks! need the administrator to manually add it."
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else
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warn "Iptables is not set rules of protect DOS attacks! need the administrator to manually add it."
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fi
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fi
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}
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@ -16,25 +16,37 @@ set -u # One variable unset, it's over
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HARDENING_LEVEL=2
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IPS6=$(which ip6tables)
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IPV6_ENABLE=1
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# This function will be called if the script status is on enabled / audit mode
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audit () {
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if [ $(${IPS6} -S | grep -c "\-P INPUT DROP") -eq 0 -o $(${IPS4} -S | grep -c "\-P OUTPUT DROP") -eq 0 -o $(${IPS4} -S | grep -c "\-P FORWARD DROP") -eq 0 ]; then
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crit "Ip6tables: Firewall policy is not default deny!"
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FNRET=1
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check_ipv6_is_enable
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IPV6_ENABLE=$FNRET
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if [ $IPV6_ENABLE -eq 0 ]; then
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if [ $(${IPS6} -S | grep -c "\-P INPUT DROP") -eq 0 -o $(${IPS4} -S | grep -c "\-P OUTPUT DROP") -eq 0 -o $(${IPS4} -S | grep -c "\-P FORWARD DROP") -eq 0 ]; then
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crit "Ip6tables: Firewall policy is not default deny!"
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FNRET=1
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else
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ok "Ip6tables has set default deny for firewall policy!"
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FNRET=0
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fi
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else
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ok "Ip6tables has set default deny for firewall policy!"
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ok "Ipv6 has set disabled, so pass."
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FNRET=0
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply () {
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if [ $FNRET = 0 ]; then
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ok "Ip6tables has set default deny for firewall policy!"
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else
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warn "Ip6tables is not set default deny for firewall policy! need the administrator to manually add it. Howto set: ip6tables -P INPUT DROP; ip6tables -P OUTPUT DROP; ip6tables -P FORWARD DROP."
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fi
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if [ $IPV6_ENABLE -eq 0 ]; then
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if [ $FNRET = 0 ]; then
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ok "Ip6tables has set default deny for firewall policy!"
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else
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warn "Ip6tables is not set default deny for firewall policy! need the administrator to manually add it. Howto set: ip6tables -P INPUT DROP; ip6tables -P OUTPUT DROP; ip6tables -P FORWARD DROP."
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fi
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else
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ok "Ipv6 has set disabled, so pass."
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fi
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}
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# This function will check config parameters required
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@ -19,61 +19,73 @@ INPUT_ACCEPT=1
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OUTPUT_ACCEPT=1
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INPUT_DENY=1
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IP6VERSION="IPS6"
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IPV6_ENABLE=1
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# This function will be called if the script status is on enabled / audit mode
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audit () {
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# Check the loopback interface to accept INPUT traffic.
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ensure_lo_traffic_input_is_accept $IP6VERSION
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if [ $FNRET = 0 ]; then
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INPUT_ACCEPT=0
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info "Ip6tables loopback traffic INPUT has configured!"
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check_ipv6_is_enable
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IPV6_ENABLE=$FNRET
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if [ $IPV6_ENABLE -eq 0 ]; then
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# Check the loopback interface to accept INPUT traffic.
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ensure_lo_traffic_input_is_accept $IP6VERSION
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if [ $FNRET = 0 ]; then
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INPUT_ACCEPT=0
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info "Ip6tables loopback traffic INPUT has configured!"
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else
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INPUT_ACCEPT=1
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info "Ip6tables: loopback traffic INPUT is not configured!"
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fi
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# Check the loopback interface to accept OUTPUT traffic.
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ensure_lo_traffic_output_is_accept $IP6VERSION
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if [ $FNRET = 0 ]; then
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OUTPUT_ACCEPT=0
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info "Ip6tables loopback traffic OUTPUT has configured!"
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else
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OUTPUT_ACCEPT=1
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info "Ip6tables: loopback traffic OUTPUT is not configured!"
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fi
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# all other interfaces to deny traffic to the loopback network.
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ensure_lo_traffic_other_if_input_is_deny $IP6VERSION
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if [ $FNRET = 0 ]; then
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INPUT_DENY=0
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info "Ip6tables loopback traffic INPUT deny from other interfaces has configured!"
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else
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INPUT_DENY=1
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info "Ip6tables: loopback traffic INPUT deny from other interfaces is not configured!"
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fi
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if [ $INPUT_ACCEPT -eq 0 -a $OUTPUT_ACCEPT -eq -a $OUTPUT_ACCEPT -eq ]; then
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ok "Loopback traffic rules were configured for v6!"
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else
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crit "Loopback traffic rules are not configured for v6!"
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fi
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else
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INPUT_ACCEPT=1
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info "Ip6tables: loopback traffic INPUT is not configured!"
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fi
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# Check the loopback interface to accept OUTPUT traffic.
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ensure_lo_traffic_output_is_accept $IP6VERSION
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if [ $FNRET = 0 ]; then
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OUTPUT_ACCEPT=0
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info "Ip6tables loopback traffic OUTPUT has configured!"
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else
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OUTPUT_ACCEPT=1
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info "Ip6tables: loopback traffic OUTPUT is not configured!"
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fi
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# all other interfaces to deny traffic to the loopback network.
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ensure_lo_traffic_other_if_input_is_deny $IP6VERSION
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if [ $FNRET = 0 ]; then
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INPUT_DENY=0
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info "Ip6tables loopback traffic INPUT deny from other interfaces has configured!"
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else
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INPUT_DENY=1
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info "Ip6tables: loopback traffic INPUT deny from other interfaces is not configured!"
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fi
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if [ $INPUT_ACCEPT -eq 0 -a $OUTPUT_ACCEPT -eq -a $OUTPUT_ACCEPT -eq ]; then
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ok "Loopback traffic rules were configured for v6!"
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else
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crit "Loopback traffic rules are not configured for v6!"
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ok "Ipv6 has set disabled, so pass."
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply () {
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if [ $INPUT_ACCEPT = 0 ]; then
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ok "Ip6tables loopback traffic INPUT has configured!"
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else
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warn "Ip6tables loopback traffic INPUT is not configured! need the administrator to manually add it. Howto set: ip6tables -A INPUT -i lo -j ACCEPT"
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fi
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if [ $IPV6_ENABLE -eq 0 ]; then
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if [ $INPUT_ACCEPT = 0 ]; then
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ok "Ip6tables loopback traffic INPUT has configured!"
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else
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warn "Ip6tables loopback traffic INPUT is not configured! need the administrator to manually add it. Howto set: ip6tables -A INPUT -i lo -j ACCEPT"
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fi
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if [ $OUTPUT_ACCEPT = 0 ]; then
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ok "Ip6tables loopback traffic OUTPUT has configured!"
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else
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warn "Ip6tables loopback traffic OUTPUT is not configured! need the administrator to manually add it. Howto set: ip6tables -A OUTPUT -o lo -j ACCEPT"
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fi
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if [ $OUTPUT_ACCEPT = 0 ]; then
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ok "Ip6tables loopback traffic OUTPUT has configured!"
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else
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warn "Ip6tables loopback traffic OUTPUT is not configured! need the administrator to manually add it. Howto set: ip6tables -A OUTPUT -o lo -j ACCEPT"
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fi
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if [ $INPUT_DENY = 0 ]; then
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ok "Ip6tables loopback traffic INPUT deny from other interfaces has configured!"
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if [ $INPUT_DENY = 0 ]; then
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ok "Ip6tables loopback traffic INPUT deny from other interfaces has configured!"
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else
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warn "Ip6tables loopback traffic INPUT deny from 127.0.0.0/8 is not configured! need the administrator to manually add it. Howto set: ip6tables -A INPUT -s 127.0.0.0/8 -j DROP"
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fi
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else
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warn "Ip6tables loopback traffic INPUT deny from 127.0.0.0/8 is not configured! need the administrator to manually add it. Howto set: ip6tables -A INPUT -s 127.0.0.0/8 -j DROP"
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ok "Ipv6 has set disabled, so pass."
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fi
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}
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@ -16,55 +16,65 @@ set -u # One variable unset, it's over
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HARDENING_LEVEL=2
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IPS6=$(which ip6tables)
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IPV6_ENABLE=1
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NETLISTENLIST="/dev/shm/7.7.5.3"
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PROTO_PORT="/dev/shm/proto_port_pair_v6"
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# This function will be called if the script status is on enabled / audit mode
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audit () {
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# For ipv4
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rm -f $NETLISTENLIST
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rm -f $PROTO_PORT
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check_ipv6_is_enable
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IPV6_ENABLE=$FNRET
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# For ipv6
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netstat -ln | egrep -w '^tcp6|^udp6' > $NETLISTENLIST
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cat $NETLISTENLIST | while read LISTENING
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do
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PROTO_TYPE=$(echo ${LISTENING} | awk '{print $1}')
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if [ "$PROTO_TYPE" == 'tcp6' ]; then
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PROTO_TYPE="tcp"
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fi
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if [ "$PROTO_TYPE" == 'udp6' ]; then
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PROTO_TYPE="udp"
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fi
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LISTEN_PORT=$(echo ${LISTENING} | awk '{print $4}' | awk -F: '{print $4}')
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if [ $($IPS6 -S | grep "^\-A INPUT \-p $PROTO_TYPE" | grep -c "\-\-dport $LISTEN_PORT \-m state \-\-state NEW \-j ACCEPT") -ge 1 ]; then
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info "Service: protocol $PROTO_TYPE listening port $LISTEN_PORT was set ipv6 firewall rules."
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if [ $IPV6_ENABLE -eq 0 ]; then
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netstat -ln | egrep -w '^tcp6|^udp6' > $NETLISTENLIST
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cat $NETLISTENLIST | while read LISTENING
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do
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PROTO_TYPE=$(echo ${LISTENING} | awk '{print $1}')
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if [ "$PROTO_TYPE" == 'tcp6' ]; then
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PROTO_TYPE="tcp"
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fi
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if [ "$PROTO_TYPE" == 'udp6' ]; then
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PROTO_TYPE="udp"
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fi
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LISTEN_PORT=$(echo ${LISTENING} | awk '{print $4}' | awk -F: '{print $4}')
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if [ $($IPS6 -S | grep "^\-A INPUT \-p $PROTO_TYPE" | grep -c "\-\-dport $LISTEN_PORT \-m state \-\-state NEW \-j ACCEPT") -ge 1 ]; then
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info "Service: protocol $PROTO_TYPE listening port $LISTEN_PORT was set ipv6 firewall rules."
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else
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echo "${PROTO_TYPE} ${LISTEN_PORT}" >> $PROTO_PORT
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info "Service: protocol $PROTO_TYPE listening port $LISTEN_PORT is not set ipv6 firewall rules."
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fi
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done
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rm -f $NETLISTENLIST
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if [ -f $PROTO_PORT ]; then
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crit "Ip6tables is not set firewall rules exist for all open ports!"
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else
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echo "${PROTO_TYPE} ${LISTEN_PORT}" >> $PROTO_PORT
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info "Service: protocol $PROTO_TYPE listening port $LISTEN_PORT is not set ipv6 firewall rules."
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ok "Ip6tables has set firewall rules exist for all open ports!"
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fi
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done
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rm -f $NETLISTENLIST
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if [ -f $PROTO_PORT ]; then
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crit "Ip6tables is not set firewall rules exist for all open ports!"
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else
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ok "Ip6tables has set firewall rules exist for all open ports!"
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ok "Ipv6 has set disabled, so pass."
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply () {
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if [ -f $PROTO_PORT ]; then
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cat $PROTO_PORT | while read NOSETPAIR
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do
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PROTO_TYPE=$(echo ${NOSETPAIR} | awk '{print $1}')
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LISTEN_PORT=$(echo ${NOSETPAIR} | awk '{print $2}')
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warn "Service: protocol $PROTO_TYPE listening port $LISTEN_PORT is not set firewall rules, need the administrator to manually add it. Howto set: ip6tables -A INPUT -p <protocol> --dport <port> -m state --state NEW -j ACCEPT"
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done
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rm -f $PROTO_PORT
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else
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ok "Ip6tables has set firewall rules exist for all open ports!"
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fi
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if [ $IPV6_ENABLE -eq 0 ]; then
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if [ -f $PROTO_PORT ]; then
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cat $PROTO_PORT | while read NOSETPAIR
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do
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PROTO_TYPE=$(echo ${NOSETPAIR} | awk '{print $1}')
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LISTEN_PORT=$(echo ${NOSETPAIR} | awk '{print $2}')
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warn "Service: protocol $PROTO_TYPE listening port $LISTEN_PORT is not set firewall rules, need the administrator to manually add it. Howto set: ip6tables -A INPUT -p <protocol> --dport <port> -m state --state NEW -j ACCEPT"
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done
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rm -f $PROTO_PORT
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else
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ok "Ip6tables has set firewall rules exist for all open ports!"
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fi
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else
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ok "Ipv6 has set disabled, so pass."
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fi
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}
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# This function will check config parameters required
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@ -17,56 +17,67 @@ HARDENING_LEVEL=2
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PROTOCOL_LIST="tcp udp icmp"
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IP6VERSION="IPS6"
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IPV6_ENABLE=1
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RET_VALUE1=1
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RET_VALUE2=1
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# This function will be called if the script status is on enabled / audit mode
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audit () {
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for protocol in $PROTOCOL_LIST
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do
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# Check INPUT with ESTABLISHED is config
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check_input_with_established_is_accept "${protocol}" "$IP6VERSION"
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if [ $FNRET = 0 ]; then
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RET_VALUE1=0
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info "Portocol $protocol INPUT is conf"
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else
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RET_VALUE1=1
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info "Portocol $protocol INPUT is not conf"
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fi
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# Check outbound is config
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check_outbound_connect_is_accept "${protocol}" $IP6VERSION
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if [ $FNRET = 0 ]; then
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RET_VALUE2=0
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info "Portocol $protocol outbound is conf"
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else
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RET_VALUE2=1
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info "Portocol $protocol outbound is not conf"
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fi
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done
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check_ipv6_is_enable
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IPV6_ENABLE=$FNRET
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if [ $IPV6_ENABLE -eq 0 ]; then
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for protocol in $PROTOCOL_LIST
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do
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# Check INPUT with ESTABLISHED is config
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check_input_with_established_is_accept "${protocol}" "$IP6VERSION"
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if [ $FNRET = 0 ]; then
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RET_VALUE1=0
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info "Portocol $protocol INPUT is conf"
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else
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RET_VALUE1=1
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info "Portocol $protocol INPUT is not conf"
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fi
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# Check outbound is config
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check_outbound_connect_is_accept "${protocol}" $IP6VERSION
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if [ $FNRET = 0 ]; then
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RET_VALUE2=0
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info "Portocol $protocol outbound is conf"
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else
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RET_VALUE2=1
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info "Portocol $protocol outbound is not conf"
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fi
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done
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if [ $RET_VALUE1 -eq 0 -a $RET_VALUE2 -eq 0 ]; then
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ok "Outbound and established connections are configured for v6."
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if [ $RET_VALUE1 -eq 0 -a $RET_VALUE2 -eq 0 ]; then
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ok "Outbound and established connections are configured for v6."
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else
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crit "Outbound and established connections are not configured for v6."
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fi
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else
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crit "Outbound and established connections are not configured for v6."
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ok "Ipv6 has set disabled, so pass."
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply () {
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for protocol in $PROTOCOL_LIST
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do
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# Apply INPUT with ESTABLISHED
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check_input_with_established_is_accept "${protocol}" "$IP6VERSION"
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if [ $FNRET = 1 ]; then
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warn "Portocol $protocol INPUT is not set, need the administrator to manually add it. Howto apply: ip6tables -A INPUT -p $protocol -m state --state ESTABLISHED -j ACCEPT"
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fi
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# Apply outbound
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check_outbound_connect_is_accept "${protocol}" "$IP6VERSION"
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if [ $FNRET = 1 ]; then
|
||||
warn "Portocol $protocol outbound is not set, need the administrator to manually add it. Howto apply: ip6tables -A OUTPUT -p $protocol -m state --state NEW,ESTABLISHED -j ACCEPT"
|
||||
fi
|
||||
done
|
||||
if [ $IPV6_ENABLE -eq 0 ]; then
|
||||
for protocol in $PROTOCOL_LIST
|
||||
do
|
||||
# Apply INPUT with ESTABLISHED
|
||||
check_input_with_established_is_accept "${protocol}" "$IP6VERSION"
|
||||
if [ $FNRET = 1 ]; then
|
||||
warn "Portocol $protocol INPUT is not set, need the administrator to manually add it. Howto apply: ip6tables -A INPUT -p $protocol -m state --state ESTABLISHED -j ACCEPT"
|
||||
fi
|
||||
# Apply outbound
|
||||
check_outbound_connect_is_accept "${protocol}" "$IP6VERSION"
|
||||
if [ $FNRET = 1 ]; then
|
||||
warn "Portocol $protocol outbound is not set, need the administrator to manually add it. Howto apply: ip6tables -A OUTPUT -p $protocol -m state --state NEW,ESTABLISHED -j ACCEPT"
|
||||
fi
|
||||
done
|
||||
else
|
||||
ok "Ipv6 has set disabled, so pass."
|
||||
fi
|
||||
}
|
||||
|
||||
# This function will check config parameters required
|
||||
|
|
|
|||
12
lib/utils.sh
12
lib/utils.sh
|
|
@ -860,3 +860,15 @@ extend_touch_file()
|
|||
fi
|
||||
}
|
||||
|
||||
# Check ipv6 is enable
|
||||
check_ipv6_is_enable()
|
||||
{
|
||||
if [ $(ip -6 addr | wc -l) -gt 0 ]; then
|
||||
debug "Ipv6 is enabled."
|
||||
FNRET=0
|
||||
else
|
||||
debug "Ipv6 is disabled."
|
||||
FNRET=1
|
||||
fi
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue