Tested with the kernel+modules linked in #22
I can confirm I was able to enable ufw and query the installed iptables rules:
$ uname -a Linux juju-0f0cbd-disco-testing-38 5.0.0-10-generic #11+lp1823862v201904100938 SMP Wed Apr 10 14:40:09 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
$ sudo ufw enable Command may disrupt existing ssh connections. Proceed with operation (y|n)? y Firewall is active and enabled on system startup
$ sudo iptables-save # Generated by iptables-save v1.6.1 on Wed Apr 10 16:15:01 2019 *filter :INPUT DROP [0:0] :FORWARD DROP [0:0] :OUTPUT ACCEPT [0:0] :ufw-after-forward - [0:0] :ufw-after-input - [0:0] :ufw-after-logging-forward - [0:0] :ufw-after-logging-input - [0:0] :ufw-after-logging-output - [0:0] :ufw-after-output - [0:0] :ufw-before-forward - [0:0] :ufw-before-input - [0:0] :ufw-before-logging-forward - [0:0] :ufw-before-logging-input - [0:0] :ufw-before-logging-output - [0:0] :ufw-before-output - [0:0] :ufw-logging-allow - [0:0] :ufw-logging-deny - [0:0] :ufw-not-local - [0:0] :ufw-reject-forward - [0:0] :ufw-reject-input - [0:0] :ufw-reject-output - [0:0] :ufw-skip-to-policy-forward - [0:0] :ufw-skip-to-policy-input - [0:0] :ufw-skip-to-policy-output - [0:0] :ufw-track-forward - [0:0] :ufw-track-input - [0:0] :ufw-track-output - [0:0] :ufw-user-forward - [0:0] :ufw-user-input - [0:0] :ufw-user-limit - [0:0] :ufw-user-limit-accept - [0:0] :ufw-user-logging-forward - [0:0] :ufw-user-logging-input - [0:0] :ufw-user-logging-output - [0:0] :ufw-user-output - [0:0] -A INPUT -j ufw-before-logging-input -A INPUT -j ufw-before-input -A INPUT -j ufw-after-input -A INPUT -j ufw-after-logging-input -A INPUT -j ufw-reject-input -A INPUT -j ufw-track-input -A FORWARD -j ufw-before-logging-forward -A FORWARD -j ufw-before-forward -A FORWARD -j ufw-after-forward -A FORWARD -j ufw-after-logging-forward -A FORWARD -j ufw-reject-forward -A FORWARD -j ufw-track-forward -A OUTPUT -j ufw-before-logging-output -A OUTPUT -j ufw-before-output -A OUTPUT -j ufw-after-output -A OUTPUT -j ufw-after-logging-output -A OUTPUT -j ufw-reject-output -A OUTPUT -j ufw-track-output -A ufw-after-input -p udp -m udp --dport 137 -j ufw-skip-to-policy-input -A ufw-after-input -p udp -m udp --dport 138 -j ufw-skip-to-policy-input -A ufw-after-input -p tcp -m tcp --dport 139 -j ufw-skip-to-policy-input -A ufw-after-input -p tcp -m tcp --dport 445 -j ufw-skip-to-policy-input -A ufw-after-input -p udp -m udp --dport 67 -j ufw-skip-to-policy-input -A ufw-after-input -p udp -m udp --dport 68 -j ufw-skip-to-policy-input -A ufw-after-input -m addrtype --dst-type BROADCAST -j ufw-skip-to-policy-input -A ufw-after-logging-forward -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK] " -A ufw-after-logging-input -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK] " -A ufw-before-forward -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT -A ufw-before-forward -p icmp -m icmp --icmp-type 3 -j ACCEPT -A ufw-before-forward -p icmp -m icmp --icmp-type 11 -j ACCEPT -A ufw-before-forward -p icmp -m icmp --icmp-type 12 -j ACCEPT -A ufw-before-forward -p icmp -m icmp --icmp-type 8 -j ACCEPT -A ufw-before-forward -j ufw-user-forward -A ufw-before-input -i lo -j ACCEPT -A ufw-before-input -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT -A ufw-before-input -m conntrack --ctstate INVALID -j ufw-logging-deny -A ufw-before-input -m conntrack --ctstate INVALID -j DROP -A ufw-before-input -p icmp -m icmp --icmp-type 3 -j ACCEPT -A ufw-before-input -p icmp -m icmp --icmp-type 11 -j ACCEPT -A ufw-before-input -p icmp -m icmp --icmp-type 12 -j ACCEPT -A ufw-before-input -p icmp -m icmp --icmp-type 8 -j ACCEPT -A ufw-before-input -p udp -m udp --sport 67 --dport 68 -j ACCEPT -A ufw-before-input -j ufw-not-local -A ufw-before-input -d 224.0.0.251/32 -p udp -m udp --dport 5353 -j ACCEPT -A ufw-before-input -d 239.255.255.250/32 -p udp -m udp --dport 1900 -j ACCEPT -A ufw-before-input -j ufw-user-input -A ufw-before-output -o lo -j ACCEPT -A ufw-before-output -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT -A ufw-before-output -j ufw-user-output -A ufw-logging-allow -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW ALLOW] " -A ufw-logging-deny -m conntrack --ctstate INVALID -m limit --limit 3/min --limit-burst 10 -j RETURN -A ufw-logging-deny -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK] " -A ufw-not-local -m addrtype --dst-type LOCAL -j RETURN -A ufw-not-local -m addrtype --dst-type MULTICAST -j RETURN -A ufw-not-local -m addrtype --dst-type BROADCAST -j RETURN -A ufw-not-local -m limit --limit 3/min --limit-burst 10 -j ufw-logging-deny -A ufw-not-local -j DROP -A ufw-skip-to-policy-forward -j DROP -A ufw-skip-to-policy-input -j DROP -A ufw-skip-to-policy-output -j ACCEPT -A ufw-track-output -p tcp -m conntrack --ctstate NEW -j ACCEPT -A ufw-track-output -p udp -m conntrack --ctstate NEW -j ACCEPT -A ufw-user-limit -m limit --limit 3/min -j LOG --log-prefix "[UFW LIMIT BLOCK] " -A ufw-user-limit -j REJECT --reject-with icmp-port-unreachable -A ufw-user-limit-accept -j ACCEPT COMMIT # Completed on Wed Apr 10 16:15:01 2019 # Generated by iptables-save v1.6.1 on Wed Apr 10 16:15:01 2019 *nat :PREROUTING ACCEPT [6:578] :INPUT ACCEPT [6:578] :OUTPUT ACCEPT [20:1823] :POSTROUTING ACCEPT [20:1823] :fan-egress - [0:0] -A POSTROUTING -s 252.0.0.0/8 -j fan-egress -A fan-egress -d 252.0.0.0/8 -j RETURN -A fan-egress -o lo0 -j RETURN -A fan-egress -s 252.0.0.0/8 -j SNAT --to-source 10.5.0.86 COMMIT # Completed on Wed Apr 10 16:15:01 2019
Tested with the kernel+modules linked in #22
I can confirm I was able to enable ufw and query the installed iptables rules:
$ uname -a disco-testing- 38 5.0.0-10-generic #11+lp1823862v2 01904100938 SMP Wed Apr 10 14:40:09 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Linux juju-0f0cbd-
$ sudo ufw enable
Command may disrupt existing ssh connections. Proceed with operation (y|n)? y
Firewall is active and enabled on system startup
$ sudo iptables-save logging- forward - [0:0] logging- input - [0:0] logging- output - [0:0] logging- forward - [0:0] logging- input - [0:0] logging- output - [0:0] to-policy- forward - [0:0] to-policy- input - [0:0] to-policy- output - [0:0] limit-accept - [0:0] logging- forward - [0:0] logging- input - [0:0] logging- output - [0:0] logging- input logging- input logging- forward logging- forward logging- output logging- output to-policy- input to-policy- input to-policy- input to-policy- input to-policy- input to-policy- input to-policy- input logging- forward -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK] " logging- input -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK] " to-policy- forward -j DROP to-policy- input -j DROP to-policy- output -j ACCEPT unreachable limit-accept -j ACCEPT
# Generated by iptables-save v1.6.1 on Wed Apr 10 16:15:01 2019
*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]
:ufw-after-forward - [0:0]
:ufw-after-input - [0:0]
:ufw-after-
:ufw-after-
:ufw-after-
:ufw-after-output - [0:0]
:ufw-before-forward - [0:0]
:ufw-before-input - [0:0]
:ufw-before-
:ufw-before-
:ufw-before-
:ufw-before-output - [0:0]
:ufw-logging-allow - [0:0]
:ufw-logging-deny - [0:0]
:ufw-not-local - [0:0]
:ufw-reject-forward - [0:0]
:ufw-reject-input - [0:0]
:ufw-reject-output - [0:0]
:ufw-skip-
:ufw-skip-
:ufw-skip-
:ufw-track-forward - [0:0]
:ufw-track-input - [0:0]
:ufw-track-output - [0:0]
:ufw-user-forward - [0:0]
:ufw-user-input - [0:0]
:ufw-user-limit - [0:0]
:ufw-user-
:ufw-user-
:ufw-user-
:ufw-user-
:ufw-user-output - [0:0]
-A INPUT -j ufw-before-
-A INPUT -j ufw-before-input
-A INPUT -j ufw-after-input
-A INPUT -j ufw-after-
-A INPUT -j ufw-reject-input
-A INPUT -j ufw-track-input
-A FORWARD -j ufw-before-
-A FORWARD -j ufw-before-forward
-A FORWARD -j ufw-after-forward
-A FORWARD -j ufw-after-
-A FORWARD -j ufw-reject-forward
-A FORWARD -j ufw-track-forward
-A OUTPUT -j ufw-before-
-A OUTPUT -j ufw-before-output
-A OUTPUT -j ufw-after-output
-A OUTPUT -j ufw-after-
-A OUTPUT -j ufw-reject-output
-A OUTPUT -j ufw-track-output
-A ufw-after-input -p udp -m udp --dport 137 -j ufw-skip-
-A ufw-after-input -p udp -m udp --dport 138 -j ufw-skip-
-A ufw-after-input -p tcp -m tcp --dport 139 -j ufw-skip-
-A ufw-after-input -p tcp -m tcp --dport 445 -j ufw-skip-
-A ufw-after-input -p udp -m udp --dport 67 -j ufw-skip-
-A ufw-after-input -p udp -m udp --dport 68 -j ufw-skip-
-A ufw-after-input -m addrtype --dst-type BROADCAST -j ufw-skip-
-A ufw-after-
-A ufw-after-
-A ufw-before-forward -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-forward -p icmp -m icmp --icmp-type 3 -j ACCEPT
-A ufw-before-forward -p icmp -m icmp --icmp-type 11 -j ACCEPT
-A ufw-before-forward -p icmp -m icmp --icmp-type 12 -j ACCEPT
-A ufw-before-forward -p icmp -m icmp --icmp-type 8 -j ACCEPT
-A ufw-before-forward -j ufw-user-forward
-A ufw-before-input -i lo -j ACCEPT
-A ufw-before-input -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-input -m conntrack --ctstate INVALID -j ufw-logging-deny
-A ufw-before-input -m conntrack --ctstate INVALID -j DROP
-A ufw-before-input -p icmp -m icmp --icmp-type 3 -j ACCEPT
-A ufw-before-input -p icmp -m icmp --icmp-type 11 -j ACCEPT
-A ufw-before-input -p icmp -m icmp --icmp-type 12 -j ACCEPT
-A ufw-before-input -p icmp -m icmp --icmp-type 8 -j ACCEPT
-A ufw-before-input -p udp -m udp --sport 67 --dport 68 -j ACCEPT
-A ufw-before-input -j ufw-not-local
-A ufw-before-input -d 224.0.0.251/32 -p udp -m udp --dport 5353 -j ACCEPT
-A ufw-before-input -d 239.255.255.250/32 -p udp -m udp --dport 1900 -j ACCEPT
-A ufw-before-input -j ufw-user-input
-A ufw-before-output -o lo -j ACCEPT
-A ufw-before-output -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-output -j ufw-user-output
-A ufw-logging-allow -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW ALLOW] "
-A ufw-logging-deny -m conntrack --ctstate INVALID -m limit --limit 3/min --limit-burst 10 -j RETURN
-A ufw-logging-deny -m limit --limit 3/min --limit-burst 10 -j LOG --log-prefix "[UFW BLOCK] "
-A ufw-not-local -m addrtype --dst-type LOCAL -j RETURN
-A ufw-not-local -m addrtype --dst-type MULTICAST -j RETURN
-A ufw-not-local -m addrtype --dst-type BROADCAST -j RETURN
-A ufw-not-local -m limit --limit 3/min --limit-burst 10 -j ufw-logging-deny
-A ufw-not-local -j DROP
-A ufw-skip-
-A ufw-skip-
-A ufw-skip-
-A ufw-track-output -p tcp -m conntrack --ctstate NEW -j ACCEPT
-A ufw-track-output -p udp -m conntrack --ctstate NEW -j ACCEPT
-A ufw-user-limit -m limit --limit 3/min -j LOG --log-prefix "[UFW LIMIT BLOCK] "
-A ufw-user-limit -j REJECT --reject-with icmp-port-
-A ufw-user-
COMMIT
# Completed on Wed Apr 10 16:15:01 2019
# Generated by iptables-save v1.6.1 on Wed Apr 10 16:15:01 2019
*nat
:PREROUTING ACCEPT [6:578]
:INPUT ACCEPT [6:578]
:OUTPUT ACCEPT [20:1823]
:POSTROUTING ACCEPT [20:1823]
:fan-egress - [0:0]
-A POSTROUTING -s 252.0.0.0/8 -j fan-egress
-A fan-egress -d 252.0.0.0/8 -j RETURN
-A fan-egress -o lo0 -j RETURN
-A fan-egress -s 252.0.0.0/8 -j SNAT --to-source 10.5.0.86
COMMIT
# Completed on Wed Apr 10 16:15:01 2019