initial upload

roles/firewall/templates/rules-v4.d/90_allow_outbound.sh.j2

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+# {{ ansible_managed }}
+
+{% if firewall_output_default_drop or firewall_output_whitelist_ipv4 %}
+{%   for ip in network_nameservers + ['8.8.8.8'] if ip|ipv4 %}
+{%     if loop.first %}
+# Allow DNS
+{%     endif %}
+iptables -A OUTPUT -d {{ ip }} -p tcp --dport 53 -m comment --comment "dns" -j ACCEPT
+iptables -A OUTPUT -d {{ ip }} -p udp --dport 53 -m comment --comment "dns" -j ACCEPT
+{%   endfor %}
+
+if getent group postfix >/dev/null 2>&1; then
+	# Permit outbound SMTP for Postfix only (TODO: move to postfix role)
+	iptables -A OUTPUT -p tcp --dport 25 -m owner --gid-owner postfix -m comment --comment "smtp" -j ACCEPT
+fi
+
+{%   if not (firewall_output_learning or firewall_output_whitelist_ipv4) %}
+# Permit outbound HTTP for user _apt
+iptables -A OUTPUT -p tcp -m multiport --dports 80,443 -m owner --uid-owner _apt -m comment --comment "apt" -j ACCEPT
+
+# Permit outbound SSH for normal users
+iptables -A OUTPUT -p tcp --dport 22 -m owner --uid-owner 1000-65500 -m comment --comment "ssh" -j ACCEPT
+
+# Allow all outbound traffic for the root user
+iptables -A OUTPUT -m owner --uid-owner 0 -j ACCEPT
+{%   endif %}
+
+{%   for ip in datacenter_global_networks|default([]) + datacenter_all_networks|default([]) %}
+iptables -A OUTPUT -d {{ ip }} -m comment --comment "keepcalling" -j ACCEPT
+{%   endfor %}
+
+{%   if firewall_output_whitelist_domains %}
+# Outbound ACL for whitelist
+if [ -r /etc/firewall/outbound_whitelist_ipv4.acl ]; then
+
+	ipset -exist create outbound-whitelist hash:net counters comment
+	ipset flush outbound-whitelist
+	grep -v '^#' /etc/firewall/outbound_whitelist_ipv4.acl | while read ip name; do
+		ipset -exist add outbound-whitelist "$ip" comment "$name"
+	done < /etc/firewall/outbound_whitelist_ipv4.acl
+
+#	iptables -A OUTPUT -m set --match-set outbound-whitelist,dst -j ACCEPT
+fi
+{%   endif %}
+
+{%   if firewall_output_whitelist_ipv4 %}
+# Outbound ACL for whitelist
+iptables -N outbound-whitelist
+{%     for item in firewall_output_whitelist_ipv4 %}
+iptables -A outbound-whitelist -d {{ item.ip }} -m comment --comment "{{ item.name }}" -j ACCEPT
+{%     endfor %}
+iptables -A OUTPUT -j outbound-whitelist
+{%   endif %}
+
+{%   if firewall_output_learning %}
+
+ipset -exist create outbound hash:ip counters
+
+iptables -A OUTPUT -p tcp --syn -m set --match-set outbound dst -j ACCEPT
+iptables -A OUTPUT -p udp -m set --match-set outbound dst -j ACCEPT
+
+iptables -A OUTPUT -p tcp --syn -j SET --add-set outbound dst
+iptables -A OUTPUT -p udp -j SET --add-set outbound dst
+
+iptables -A internal-out -m limit --limit 10/min --limit-burst 2 -j LOG --log-prefix "{{ firewall_log_prefix }} internal-out DROP: " --log-level 5 --log-uid
+
+{%   endif %}
+
+{% endif %}