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Jupyter Notebook for Generating OPNsense Configuration XML Files from Python INI
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<?xml version="1.0"?>
<opnsense>
<theme>opnsense</theme>
<sysctl>
<item>
<descr>Increase UFS read-ahead speeds to match the state of hard drives and NCQ.</descr>
<tunable>vfs.read_max</tunable>
<value>default</value>
</item>
<item>
<descr>Set the ephemeral port range to be lower.</descr>
<tunable>net.inet.ip.portrange.first</tunable>
<value>default</value>
</item>
<item>
<descr>Drop packets to closed TCP ports without returning a RST</descr>
<tunable>net.inet.tcp.blackhole</tunable>
<value>default</value>
</item>
<item>
<descr>Do not send ICMP port unreachable messages for closed UDP ports</descr>
<tunable>net.inet.udp.blackhole</tunable>
<value>default</value>
</item>
<item>
<descr>Randomize the ID field in IP packets</descr>
<tunable>net.inet.ip.random_id</tunable>
<value>default</value>
</item>
<item>
<descr>
Source routing is another way for an attacker to try to reach non-routable addresses behind your box.
It can also be used to probe for information about your internal networks. These functions come enabled
as part of the standard FreeBSD core system.
</descr>
<tunable>net.inet.ip.sourceroute</tunable>
<value>default</value>
</item>
<item>
<descr>
Source routing is another way for an attacker to try to reach non-routable addresses behind your box.
It can also be used to probe for information about your internal networks. These functions come enabled
as part of the standard FreeBSD core system.
</descr>
<tunable>net.inet.ip.accept_sourceroute</tunable>
<value>default</value>
</item>
<item>
<descr>
This option turns off the logging of redirect packets because there is no limit and this could fill
up your logs consuming your whole hard drive.
</descr>
<tunable>net.inet.icmp.log_redirect</tunable>
<value>default</value>
</item>
<item>
<descr>Drop SYN-FIN packets (breaks RFC1379, but nobody uses it anyway)</descr>
<tunable>net.inet.tcp.drop_synfin</tunable>
<value>default</value>
</item>
<item>
<descr>Enable sending IPv6 redirects</descr>
<tunable>net.inet6.ip6.redirect</tunable>
<value>default</value>
</item>
<item>
<descr>Enable privacy settings for IPv6 (RFC 4941)</descr>
<tunable>net.inet6.ip6.use_tempaddr</tunable>
<value>default</value>
</item>
<item>
<descr>Prefer privacy addresses and use them over the normal addresses</descr>
<tunable>net.inet6.ip6.prefer_tempaddr</tunable>
<value>default</value>
</item>
<item>
<descr>Generate SYN cookies for outbound SYN-ACK packets</descr>
<tunable>net.inet.tcp.syncookies</tunable>
<value>default</value>
</item>
<item>
<descr>Maximum incoming/outgoing TCP datagram size (receive)</descr>
<tunable>net.inet.tcp.recvspace</tunable>
<value>default</value>
</item>
<item>
<descr>Maximum incoming/outgoing TCP datagram size (send)</descr>
<tunable>net.inet.tcp.sendspace</tunable>
<value>default</value>
</item>
<item>
<descr>Do not delay ACK to try and piggyback it onto a data packet</descr>
<tunable>net.inet.tcp.delayed_ack</tunable>
<value>default</value>
</item>
<item>
<descr>Maximum outgoing UDP datagram size</descr>
<tunable>net.inet.udp.maxdgram</tunable>
<value>default</value>
</item>
<item>
<descr>Handling of non-IP packets which are not passed to pfil (see if_bridge(4))</descr>
<tunable>net.link.bridge.pfil_onlyip</tunable>
<value>default</value>
</item>
<item>
<descr>Set to 1 to additionally filter on the physical interface for locally destined packets</descr>
<tunable>net.link.bridge.pfil_local_phys</tunable>
<value>default</value>
</item>
<item>
<descr>Set to 0 to disable filtering on the incoming and outgoing member interfaces.</descr>
<tunable>net.link.bridge.pfil_member</tunable>
<value>default</value>
</item>
<item>
<descr>Set to 1 to enable filtering on the bridge interface</descr>
<tunable>net.link.bridge.pfil_bridge</tunable>
<value>default</value>
</item>
<item>
<descr>Allow unprivileged access to tap(4) device nodes</descr>
<tunable>net.link.tap.user_open</tunable>
<value>default</value>
</item>
<item>
<descr>Randomize PID's (see src/sys/kern/kern_fork.c: sysctl_kern_randompid())</descr>
<tunable>kern.randompid</tunable>
<value>default</value>
</item>
<item>
<descr>Disable CTRL+ALT+Delete reboot from keyboard.</descr>
<tunable>hw.syscons.kbd_reboot</tunable>
<value>default</value>
</item>
<item>
<descr>Enable TCP extended debugging</descr>
<tunable>net.inet.tcp.log_debug</tunable>
<value>default</value>
</item>
<item>
<descr>Set ICMP Limits</descr>
<tunable>net.inet.icmp.icmplim</tunable>
<value>default</value>
</item>
<item>
<descr>TCP Offload Engine</descr>
<tunable>net.inet.tcp.tso</tunable>
<value>default</value>
</item>
<item>
<descr>UDP Checksums</descr>
<tunable>net.inet.udp.checksum</tunable>
<value>default</value>
</item>
<item>
<descr>Maximum socket buffer size</descr>
<tunable>kern.ipc.maxsockbuf</tunable>
<value>default</value>
</item>
<item>
<descr>Page Table Isolation (Meltdown mitigation, requires reboot.)</descr>
<tunable>vm.pmap.pti</tunable>
<value>default</value>
</item>
<item>
<descr>Disable Indirect Branch Restricted Speculation (Spectre V2 mitigation)</descr>
<tunable>hw.ibrs_disable</tunable>
<value>default</value>
</item>
<item>
<descr>Hide processes running as other groups</descr>
<tunable>security.bsd.see_other_gids</tunable>
<value>default</value>
</item>
<item>
<descr>Hide processes running as other users</descr>
<tunable>security.bsd.see_other_uids</tunable>
<value>default</value>
</item>
<item>
<descr>Enable/disable sending of ICMP redirects in response to IP packets for which a better,
and for the sender directly reachable, route and next hop is known.
</descr>
<tunable>net.inet.ip.redirect</tunable>
<value>default</value>
</item>
<item>
<descr>
Redirect attacks are the purposeful mass-issuing of ICMP type 5 packets. In a normal network, redirects
to the end stations should not be required. This option enables the NIC to drop all inbound ICMP redirect
packets without returning a response.
</descr>
<tunable>net.inet.icmp.drop_redirect</tunable>
<value>1</value>
</item>
<item>
<descr>Maximum outgoing UDP datagram size</descr>
<tunable>net.local.dgram.maxdgram</tunable>
<value>default</value>
</item>
</sysctl>
<system>
<optimization>normal</optimization>
<hostname>OPNsense</hostname>
<domain>localdomain</domain>
<group>
<name>admins</name>
<description>System Administrators</description>
<scope>system</scope>
<gid>1999</gid>
<member>0</member>
<priv>page-all</priv>
</group>
<user>
<name>root</name>
<descr>System Administrator</descr>
<scope>system</scope>
<groupname>admins</groupname>
<password>$2y$10$YRVoF4SgskIsrXOvOQjGieB9XqHPRra9R7d80B3BZdbY/j21TwBfS</password>
<uid>0</uid>
</user>
<nextuid>2000</nextuid>
<nextgid>2000</nextgid>
<timezone>Etc/UTC</timezone>
<timeservers>0.opnsense.pool.ntp.org 1.opnsense.pool.ntp.org 2.opnsense.pool.ntp.org 3.opnsense.pool.ntp.org</timeservers>
<webgui>
<protocol>https</protocol>
</webgui>
<disablenatreflection>yes</disablenatreflection>
<usevirtualterminal>1</usevirtualterminal>
<disableconsolemenu/>
<disablevlanhwfilter>1</disablevlanhwfilter>
<disablechecksumoffloading>1</disablechecksumoffloading>
<disablesegmentationoffloading>1</disablesegmentationoffloading>
<disablelargereceiveoffloading>1</disablelargereceiveoffloading>
<ipv6allow/>
<powerd_ac_mode>hadp</powerd_ac_mode>
<powerd_battery_mode>hadp</powerd_battery_mode>
<powerd_normal_mode>hadp</powerd_normal_mode>
<bogons>
<interval>monthly</interval>
</bogons>
<pf_share_forward>1</pf_share_forward>
<lb_use_sticky>1</lb_use_sticky>
<ssh>
<group>admins</group>
</ssh>
<firmware version="1.0.0">
<mirror/>
<flavour/>
</firmware>
<dnsserver></dnsserver>
<language>en_US</language>
</system>
<interfaces>
<wan>
<enable>1</enable>
<if></if>
<ipaddr></ipaddr>
<ipaddrv6/>
<subnet></subnet>
<gateway>WAN_GW</gateway>
<blockpriv>on</blockpriv>
<blockbogons>on</blockbogons>
<media/>
<mediaopt/>
<dhcp6-ia-pd-len>0</dhcp6-ia-pd-len>
<subnetv6/>
<gatewayv6/>
</wan>
<lan>
<if></if>
<descr></descr>
<enable>1</enable>
<spoofmac/>
<ipaddr></ipaddr>
<subnet></subnet>
</lan>
<lo0>
<internal_dynamic>1</internal_dynamic>
<descr>Loopback</descr>
<enable>1</enable>
<if>lo0</if>
<ipaddr>127.0.0.1</ipaddr>
<ipaddrv6>::1</ipaddrv6>
<subnet>8</subnet>
<subnetv6>128</subnetv6>
<type>none</type>
<virtual>1</virtual>
</lo0>
</interfaces>
<dhcpd>
<lan>
<enable>1</enable>
<gateway></gateway>
<ddnsdomainalgorithm>hmac-md5</ddnsdomainalgorithm>
<numberoptions>
<item/>
</numberoptions>
<range>
<from></from>
<to></to>
</range>
<winsserver/>
<dnsserver></dnsserver>
<ntpserver/>
</lan>
</dhcpd>
<unbound>
<enable>on</enable>
<dnssec>on</dnssec>
<dnssecstripped>on</dnssecstripped>
</unbound>
<snmpd>
<syslocation/>
<syscontact/>
<rocommunity>public</rocommunity>
</snmpd>
<nat>
<outbound>
<mode>automatic</mode>
</outbound>
</nat>
<filter>
<rule>
<type>pass</type>
<ipprotocol>inet</ipprotocol>
<descr>Default allow LAN to any rule</descr>
<interface>lan</interface>
<source>
<network>lan</network>
</source>
<destination>
<any/>
</destination>
</rule>
<rule>
<type>pass</type>
<ipprotocol>inet6</ipprotocol>
<descr>Default allow LAN IPv6 to any rule</descr>
<interface>lan</interface>
<source>
<network>lan</network>
</source>
<destination>
<any/>
</destination>
</rule>
</filter>
<rrd>
<enable/>
</rrd>
<load_balancer>
<monitor_type>
<name>ICMP</name>
<type>icmp</type>
<descr>ICMP</descr>
<options/>
</monitor_type>
<monitor_type>
<name>TCP</name>
<type>tcp</type>
<descr>Generic TCP</descr>
<options/>
</monitor_type>
<monitor_type>
<name>HTTP</name>
<type>http</type>
<descr>Generic HTTP</descr>
<options>
<path>/</path>
<host/>
<code>200</code>
</options>
</monitor_type>
<monitor_type>
<name>HTTPS</name>
<type>https</type>
<descr>Generic HTTPS</descr>
<options>
<path>/</path>
<host/>
<code>200</code>
</options>
</monitor_type>
<monitor_type>
<name>SMTP</name>
<type>send</type>
<descr>Generic SMTP</descr>
<options>
<send/>
<expect>220 *</expect>
</options>
</monitor_type>
</load_balancer>
<ntpd>
<prefer>0.opnsense.pool.ntp.org</prefer>
</ntpd>
<widgets>
<sequence>system_information-container:00000000-col3:show,services_status-container:00000001-col4:show,gateways-container:00000002-col4:show,interface_list-container:00000003-col4:show</sequence>
<column_count>2</column_count>
</widgets>
<revision>
<username>(system)</username>
<time></time>
<description></description>
</revision>
<gateways>
<gateway_item>
<descr>Interface WAN Gateway</descr>
<defaultgw>1</defaultgw>
<ipprotocol>inet</ipprotocol>
<interface>wan</interface>
<gateway></gateway>
<monitor_disable>1</monitor_disable>
<name>WAN_GW</name>
<interval>1</interval>
<weight>1</weight>
<fargw></fargw>
</gateway_item>
</gateways>
</opnsense>
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