QUANTUM SECURITY WEBSHELL

Editing: :etc:ufw:before.rules

#
# rules.before
#
# Rules that should be run before the ufw command line added rules. Custom
# rules should be added to one of these chains:
#   ufw-before-input
#   ufw-before-output
#   ufw-before-forward
#

# Don't delete these required lines, otherwise there will be errors
*filter
:ufw-before-input - [0:0]
:ufw-before-output - [0:0]
:ufw-before-forward - [0:0]
:ufw-not-local - [0:0]
# End required lines

# allow all on loopback
-A ufw-before-input -i lo -j ACCEPT
-A ufw-before-output -o lo -j ACCEPT

# quickly process packets for which we already have a connection
-A ufw-before-input -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-output -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-forward -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT

# drop INVALID packets (logs these in loglevel medium and higher)
-A ufw-before-input -m conntrack --ctstate INVALID -j ufw-logging-deny
-A ufw-before-input -m conntrack --ctstate INVALID -j DROP

# ok icmp codes for INPUT
-A ufw-before-input -p icmp --icmp-type destination-unreachable -j ACCEPT
-A ufw-before-input -p icmp --icmp-type time-exceeded -j ACCEPT
-A ufw-before-input -p icmp --icmp-type parameter-problem -j ACCEPT
-A ufw-before-input -p icmp --icmp-type echo-request -j ACCEPT

# ok icmp code for FORWARD
-A ufw-before-forward -p icmp --icmp-type destination-unreachable -j ACCEPT
-A ufw-before-forward -p icmp --icmp-type time-exceeded -j ACCEPT
-A ufw-before-forward -p icmp --icmp-type parameter-problem -j ACCEPT
-A ufw-before-forward -p icmp --icmp-type echo-request -j ACCEPT

# allow dhcp client to work
-A ufw-before-input -p udp --sport 67 --dport 68 -j ACCEPT

#
# ufw-not-local
#
-A ufw-before-input -j ufw-not-local

# if LOCAL, RETURN
-A ufw-not-local -m addrtype --dst-type LOCAL -j RETURN

# if MULTICAST, RETURN
-A ufw-not-local -m addrtype --dst-type MULTICAST -j RETURN

# if BROADCAST, RETURN
-A ufw-not-local -m addrtype --dst-type BROADCAST -j RETURN

# all other non-local packets are dropped
-A ufw-not-local -m limit --limit 3/min --limit-burst 10 -j ufw-logging-deny
-A ufw-not-local -j DROP

# allow MULTICAST mDNS for service discovery (be sure the MULTICAST line above
# is uncommented)
-A ufw-before-input -p udp -d 224.0.0.251 --dport 5353 -j ACCEPT

# allow MULTICAST UPnP for service discovery (be sure the MULTICAST line above
# is uncommented)
-A ufw-before-input -p udp -d 239.255.255.250 --dport 1900 -j ACCEPT

# don't delete the 'COMMIT' line or these rules won't be processed
COMMIT

Name	Size	Actions
..	[DIR]	[Open] [Delete] [Rename]
:etc:apt:apt.conf.d:20auto-upgrades	80 bytes	[Open] [Edit] [Delete] [Download] [Rename]
:etc:apt:apt.conf.d:50unattended-upgrades	6155 bytes	[Open] [Edit] [Delete] [Download] [Rename]
:etc:default:grub	1538 bytes	[Open] [Edit] [Delete] [Download] [Rename]
:etc:default:sysstat	284 bytes	[Open] [Edit] [Delete] [Download] [Rename]
:etc:papersize	7 bytes	[Open] [Edit] [Delete] [Download] [Rename]
:etc:postgresql-common:createcluster.conf	1336 bytes	[Open] [Edit] [Delete] [Download] [Rename]
:etc:rsyslog.d:50-default.conf	1124 bytes	[Open] [Edit] [Delete] [Download] [Rename]
:etc:ssh:sshd_config	3502 bytes	[Open] [Edit] [Delete] [Download] [Rename]
:etc:ufw:after.rules	1004 bytes	[Open] [Edit] [Delete] [Download] [Rename]
:etc:ufw:after6.rules	915 bytes	[Open] [Edit] [Delete] [Download] [Rename]
:etc:ufw:before.rules	2537 bytes	[Open] [Edit] [Delete] [Download] [Rename]
:etc:ufw:before6.rules	6700 bytes	[Open] [Edit] [Delete] [Download] [Rename]