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firewall initscript: slightly improve comments

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This patch corrects some typos and does not introduce functional changes.

Signed-off-by: Peter Müller <peter.mueller@ipfire.org>
Reviewed-by: Michael Tremer <michael.tremer@ipfire.org>
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>
This commit is contained in:
Peter Müller
2020-04-07 17:07:18 +02:00
committed by Arne Fitzenreiter
parent 79ccd55de4
commit ef7e9e52f2
1 changed files with 9 additions and 9 deletions
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18
src/initscripts/system/firewall
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@@ -41,18 +41,18 @@ iptables_init() {
iptables -A LOG_REJECT -j REJECT
# This chain will log, then DROPs packets with certain bad combinations
# of flags might indicate a port-scan attempt (xmas, null, etc)
# of flags might indicate a port-scan attempt (xmas, null, etc.)
iptables -N PSCAN
if [ "$DROPPORTSCAN" == "on" ]; then
iptables -A PSCAN -p tcp -m limit --limit 10/second -j LOG --log-prefix "DROP_TCP Scan " -m comment --comment "DROP_TCP PScan"
iptables -A PSCAN -p udp -m limit --limit 10/second -j LOG --log-prefix "DROP_UDP Scan " -m comment --comment "DROP_UDP PScan"
iptables -A PSCAN -p tcp -m limit --limit 10/second -j LOG --log-prefix "DROP_TCP Scan " -m comment --comment "DROP_TCP PScan"
iptables -A PSCAN -p udp -m limit --limit 10/second -j LOG --log-prefix "DROP_UDP Scan " -m comment --comment "DROP_UDP PScan"
iptables -A PSCAN -p icmp -m limit --limit 10/second -j LOG --log-prefix "DROP_ICMP Scan " -m comment --comment "DROP_ICMP PScan"
iptables -A PSCAN -f -m limit --limit 10/second -j LOG --log-prefix "DROP_FRAG Scan " -m comment --comment "DROP_FRAG PScan"
fi
iptables -A PSCAN -j DROP -m comment --comment "DROP_PScan"
# New tcp packets without SYN set - could well be an obscure type of port scan
# that's not covered above, may just be a broken windows machine
# that's not covered above, may just be a broken Windows machine
iptables -N NEWNOTSYN
if [ "$DROPNEWNOTSYN" == "on" ]; then
iptables -A NEWNOTSYN -m limit --limit 10/second -j LOG --log-prefix "DROP_NEWNOTSYN "
@@ -159,7 +159,7 @@ iptables_init() {
iptables -t raw -A CONNTRACK -p tcp -j CT --helper amanda
fi
# Fix for braindead ISP's
# Fix for braindead ISPs
iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
# CUSTOM chains, can be used by the users themselves
@@ -180,7 +180,7 @@ iptables_init() {
iptables -A FORWARD -j P2PBLOCK
iptables -A OUTPUT -j P2PBLOCK
# Guardian (IPS) chains
# IPS (Guardian) chains
iptables -N GUARDIAN
iptables -A INPUT -j GUARDIAN
iptables -A FORWARD -j GUARDIAN
@@ -196,7 +196,7 @@ iptables_init() {
iptables -A FORWARD -i tun+ -j OVPNBLOCK
iptables -A FORWARD -o tun+ -j OVPNBLOCK
# IPS (suricata) chains
# IPS (Suricata) chains
iptables -N IPS_INPUT
iptables -N IPS_FORWARD
iptables -N IPS_OUTPUT
@@ -261,7 +261,7 @@ iptables_init() {
iptables -A OUTPUT -o "${GREEN_DEV}" -j DHCPGREENOUTPUT
fi
# allow DHCP on BLUE to be turned on/off
# Allow DHCP on BLUE to be turned on/off
iptables -N DHCPBLUEINPUT
iptables -N DHCPBLUEOUTPUT
if [ -n "${BLUE_DEV}" ]; then
@@ -438,7 +438,7 @@ iptables_red_up() {
iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
fi
# Outgoing masquerading (don't masqerade IPSEC (mark 50))
# Outgoing masquerading (don't masqerade IPsec (mark 50))
iptables -t nat -A REDNAT -m mark --mark 50 -o $IFACE -j RETURN
if [ "${IFACE}" = "${GREEN_DEV}" ]; then