Index: iptables/ufw/after.rules
===================================================================
--- iptables/ufw/after.rules	(revision ab902ad3696baaa38816efef2c2b60610daae511)
+++ iptables/ufw/after.rules	(revision 49996391c0a72e72d2f07c9959e94f6036d621bb)
@@ -25,6 +25,6 @@
 
 # catchall for logging
--A ufw-after-input -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK INPUT]: "
--A ufw-after-forward -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK FORWARD]: "
+-A ufw-after-input -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK INPUT]: " --log-level err
+-A ufw-after-forward -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK FORWARD]: " --log-level err
 
 # don't delete the 'COMMIT' line or these rules won't be processed
Index: iptables/ufw/before.rules
===================================================================
--- iptables/ufw/before.rules	(revision ab902ad3696baaa38816efef2c2b60610daae511)
+++ iptables/ufw/before.rules	(revision 49996391c0a72e72d2f07c9959e94f6036d621bb)
@@ -24,9 +24,28 @@
 # connection tracking rules
 -A ufw-before-input -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+-A ufw-before-forward -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
 
 # drop INVALID packets
 # uncomment to log INVALID packets
-#-A ufw-before-input -m conntrack --ctstate INVALID -j LOG --log-prefix "[UFW BLOCK INVALID]: "
+-A ufw-before-input -m conntrack --ctstate INVALID -j LOG --log-prefix "[UFW BLOCK INVALID]: " --log-level err -m limit --limit 3/min --limit-burst 10
 -A ufw-before-input -m conntrack --ctstate INVALID -j DROP
+
+## Ingress filter (see RFC 2827) (eth0:LAN<192.168.100.0/24>)
+-A ufw-before-forward -i eth0 -s ! 192.168.100.0/24 -j LOG --log-tcp-options --log-ip-options --log-prefix "[UFW BLOCK LOG_INGRESS]: " --log-level err -m limit --limit 3/min --limit-burst 10
+-A ufw-before-forward -i eth0 -s ! 192.168.100.0/24 -j DROP
+
+## DROP CIFS(Samba) access from/to WAN(eth1)
+-A ufw-before-input   -i eth1 -p tcp -m multiport --dports 135,137:139,445 -j DROP
+-A ufw-before-input   -i eth1 -p udp -m multiport --dports 135,137:139,445 -j DROP
+-A ufw-before-forward -i eth1 -p tcp -m multiport --dports 135,137:139,445 -j DROP
+-A ufw-before-forward -i eth1 -p udp -m multiport --dports 135,137:139,445 -j DROP
+-A ufw-before-forward -o eth1 -p tcp -m multiport --dports 135,137:139,445 -j DROP
+-A ufw-before-forward -o eth1 -p udp -m multiport --dports 135,137:139,445 -j DROP
+-A ufw-before-output  -o eth1 -p tcp -m multiport --dports 135,137:139,445 -j DROP
+-A ufw-before-output  -o eth1 -p udp -m multiport --dports 135,137:139,445 -j DROP
+
+## Access from LAN
+-A ufw-before-input -i eth0 -j ACCEPT
+-A ufw-before-forward -i eth0 -j ACCEPT
 
 # connection tracking for outbound
@@ -58,5 +77,5 @@
 -A ufw-not-local -m addrtype --dst-type BROADCAST -j RETURN
 
--A ufw-not-local -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK NOT-TO-ME]: "
+-A ufw-not-local -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK NOT-TO-ME]: " --log-level err
 
 # all other non-local packets are dropped
Index: iptables/ufw/mangle.rules
===================================================================
--- iptables/ufw/mangle.rules	(revision 49996391c0a72e72d2f07c9959e94f6036d621bb)
+++ iptables/ufw/mangle.rules	(revision 49996391c0a72e72d2f07c9959e94f6036d621bb)
@@ -0,0 +1,12 @@
+#
+# This file is used by /etc/init.d/setfilter
+#
+# Rules that should be stored in mangle table.
+
+
+*mangle
+# to overcome criminally braindead ISPs or servers which block ICMP Fragmentation Needed packets
+# see iptables(8)
+-A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
+
+COMMIT
Index: iptables/ufw/raw.rules
===================================================================
--- iptables/ufw/raw.rules	(revision 49996391c0a72e72d2f07c9959e94f6036d621bb)
+++ iptables/ufw/raw.rules	(revision 49996391c0a72e72d2f07c9959e94f6036d621bb)
@@ -0,0 +1,33 @@
+#
+# This file is used by /etc/init.d/setfilter
+#
+# Rules that should be stored in raw table.
+# These are mainly used to filter evil or wrong packets.
+
+
+*raw
+:LOG_ICMP - [0:0]
+:LOG_SPOOF - [0:0]
+
+## LOG and DROP fragmented packets (not head fragments)
+-A PREROUTING --fragment -j LOG --log-prefix "[UFW BLOCK FRAGMENTED]: " --log-level err -m limit --limit 3/min --limit-burst 10
+-A PREROUTING --fragment -j DROP
+
+## LOG and DROP strange icmp packets
+-A LOG_ICMP -j LOG --log-prefix "[UFW BLOCK BAD-ICMP]: " --log-level err -m limit --limit 3/min --limit-burst 10
+-A LOG_ICMP -j DROP
+# Too large icmp requests
+-A PREROUTING -p icmp --icmp-type echo-request -m length --length 85: -j LOG_ICMP
+# Too many times of icmp requests (only 5 packets per second if over 10pkts/sec)
+-A PREROUTING -p icmp --icmp-type echo-request -m limit --limit 5/s --limit-burst 10 -j ACCEPT
+-A PREROUTING -p icmp --icmp-type echo-request -j LOG_ICMP
+
+## LOG and DROP IP spoofing (eth1:WAN)
+-A LOG_SPOOF -j LOG --log-prefix "[UFW BLOCK IP-SPOOFING]: " --log-level err -m limit --limit 3/min --limit-burst 10
+-A LOG_SPOOF -j DROP
+-A PREROUTING -i eth1 -s    127.0.0.0/8 -j LOG_SPOOF
+-A PREROUTING -i eth1 -s     10.0.0.0/8 -j LOG_SPOOF
+-A PREROUTING -i eth1 -s  172.16.0.0/12 -j LOG_SPOOF
+-A PREROUTING -i eth1 -s 192.168.0.0/16 -j LOG_SPOOF
+
+COMMIT