On Fri, Apr 08, 2016 at 03:04:10PM +0200, Gavin Schenk wrote:
> Supports ipv4 and ipv6 and both options can be selected in menuconfig
> by IPTABLES_IPV6_SYSTEMD_UNIT and/or IPTABLES_IPV4_SYSTEMD_UNIT
>
> If you select IPTABLES_IPV4_SYSTEMD_UNIT a systemd unit is started on
> multiuser.target that set the iptable rules from file:
> /etc/iptables/rules.v4
>
> If you select IPTABLES_IPV6_SYSTEMD_UNIT a systemd unit is started on
> multiuser.target that set the iptable rules from the file:
> /etc/iptables/rules.v6
>
> The Package provides empty files. If you want to add custom rules, you
> have to provide your own files. The rule files can be generated with
> the utils iptables-save ip6tables-save from the iptables package.
>
> Example:
> Generating a rule file, that drops port 5000 on interface eth0 for ipv4
>
> 1.) iptables -A INPUT -i eth0 -p TCP --dport 5000 -j DROP
> 2.) iptables-save > /etc/iptables/rules.v4
>
> The basic idea was taken from https://github.com/gronke/systemd-iptables
> written by Stefan Grönke <[email protected]> in 2015.
>
> Signed-off-by: Gavin Schenk <[email protected]>
> ---
> projectroot/etc/iptables/rules.v4 | 0
> projectroot/etc/iptables/rules.v6 | 0
> projectroot/lib/systemd/system/ip6tables.service | 14 ++++++++++++++
> projectroot/lib/systemd/system/iptables.service | 14 ++++++++++++++
> projectroot/usr/sbin/ip6tables-flush | 19 +++++++++++++++++++
> projectroot/usr/sbin/iptables-flush | 19 +++++++++++++++++++
> rules/iptables.in | 10 ++++++++++
> rules/iptables.make | 17 +++++++++++++++++
> 8 files changed, 93 insertions(+)
> create mode 100644 projectroot/etc/iptables/rules.v4
> create mode 100644 projectroot/etc/iptables/rules.v6
> create mode 100644 projectroot/lib/systemd/system/ip6tables.service
> create mode 100644 projectroot/lib/systemd/system/iptables.service
> create mode 100755 projectroot/usr/sbin/ip6tables-flush
> create mode 100755 projectroot/usr/sbin/iptables-flush
>
> diff --git a/projectroot/etc/iptables/rules.v4
> b/projectroot/etc/iptables/rules.v4
> new file mode 100644
> index 0000000..e69de29
> diff --git a/projectroot/etc/iptables/rules.v6
> b/projectroot/etc/iptables/rules.v6
> new file mode 100644
> index 0000000..e69de29
> diff --git a/projectroot/lib/systemd/system/ip6tables.service
> b/projectroot/lib/systemd/system/ip6tables.service
> new file mode 100644
> index 0000000..e842cc1
> --- /dev/null
> +++ b/projectroot/lib/systemd/system/ip6tables.service
> @@ -0,0 +1,14 @@
> +[Unit]
> +Description=Packet Filtering Framework
> +DefaultDependencies=no
> +After=systemd-sysctl.service
> +Before=sysinit.target
> +ConditionFileNotEmpty=/etc/iptables/rules.v6
> +[Service]
> +Type=oneshot
> +ExecStart=/usr/sbin/ip6tables-restore /etc/iptables/rules.v6
> +ExecReload=/usr/sbin/ip6tables-restore /etc/iptables/rules.v6
> +ExecStop=/usr/sbin/iptables/ip6tables-flush
> +RemainAfterExit=yes
> +[Install]
> +WantedBy=multi-user.target
> diff --git a/projectroot/lib/systemd/system/iptables.service
> b/projectroot/lib/systemd/system/iptables.service
> new file mode 100644
> index 0000000..fa4a8b3
> --- /dev/null
> +++ b/projectroot/lib/systemd/system/iptables.service
> @@ -0,0 +1,14 @@
> +[Unit]
> +Description=Packet Filtering Framework
> +DefaultDependencies=no
> +After=systemd-sysctl.service
> +Before=sysinit.target
> +ConditionFileNotEmpty=/etc/iptables/rules.v4
> +[Service]
> +Type=oneshot
> +ExecStart=/usr/sbin/iptables-restore /etc/iptables/rules.v4
> +ExecReload=/usr/sbin/iptables-restore /etc/iptables/rules.v4
> +ExecStop=/usr/sbin/iptables-flush
> +RemainAfterExit=yes
> +[Install]
> +WantedBy=multi-user.target
> diff --git a/projectroot/usr/sbin/ip6tables-flush
> b/projectroot/usr/sbin/ip6tables-flush
> new file mode 100755
> index 0000000..cf6d22b
> --- /dev/null
> +++ b/projectroot/usr/sbin/ip6tables-flush
> @@ -0,0 +1,19 @@
> +#!/bin/sh
> +
> +if ! ip6tables --list >/dev/null 2>&1; then
> + echo "ipv6 filtering is not supported by the running kernel."
> + exit 3
> +fi
> +
> +ip6tables -F
> +ip6tables -X
> +ip6tables -Z
> +for table in $(</proc/net/ip6_tables_names)
This does not work with a busybox /bin/sh. I think that's bashism.
This should work:
for table in $(cat /proc/net/ip6_tables_names); do
...
Note: It doesn't fail! The list is always empty!
> +do
> + ip6tables -t $table -F
> + ip6tables -t $table -X
> + ip6tables -t $table -Z
> +done
> +ip6tables -P INPUT ACCEPT
> +ip6tables -P OUTPUT ACCEPT
> +ip6tables -P FORWARD ACCEPT
> diff --git a/projectroot/usr/sbin/iptables-flush
> b/projectroot/usr/sbin/iptables-flush
> new file mode 100755
> index 0000000..a6e056f
> --- /dev/null
> +++ b/projectroot/usr/sbin/iptables-flush
> @@ -0,0 +1,19 @@
> +#!/bin/sh
> +
> +if ! iptables --list >/dev/null 2>&1; then
> + echo "ipv4 filtering is not supported by the running kernel."
> + exit 3
> +fi
> +
> +iptables -F
> +iptables -X
> +iptables -Z
> +for table in $(</proc/net/ip_tables_names)
Same here.
> +do
> + iptables -t $table -F
> + iptables -t $table -X
> + iptables -t $table -Z
> +done
> +iptables -P INPUT ACCEPT
> +iptables -P FORWARD ACCEPT
> +iptables -P OUTPUT ACCEPT
> diff --git a/rules/iptables.in b/rules/iptables.in
> index e6f3699..8354060 100644
> --- a/rules/iptables.in
> +++ b/rules/iptables.in
> @@ -25,6 +25,16 @@ config IPTABLES_IPV4
> bool
> prompt "IPv4 support"
>
> +config IPTABLES_IPV6_SYSTEMD_UNIT
> + bool
> + prompt "Activate IPv6 systemd service unit"
> + select IPTABLES_IPV6
> +
> +config IPTABLES_IPV4_SYSTEMD_UNIT
> + bool
> + prompt "Activate IPv4 systemd service unit"
> + select IPTABLES_IPV4
> +
> config IPTABLES_LIBIPQ
> bool
> prompt "Enable libipq"
> diff --git a/rules/iptables.make b/rules/iptables.make
> index 8a1ea66..3dff774 100644
> --- a/rules/iptables.make
> +++ b/rules/iptables.make
> @@ -126,6 +126,23 @@ ifdef PTXCONF_IPTABLES_IPV4
> @$(call install_link, iptables, xtables-multi,
> /usr/sbin/iptables-restore)
> @$(call install_link, iptables, xtables-multi, /usr/sbin/iptables-save)
> endif
> +
> +ifdef PTXCONF_IPTABLES_IPV6_SYSTEMD_UNIT
> +# # IPv6 systemd service unit part
> + @$(call install_alternative, iptables, 0, 0, 0644,
> /etc/iptables/rules.v6)
> + @$(call install_alternative, iptables, 0, 0, 0755,
> /usr/sbin/ip6tables-flush)
> + @$(call install_alternative, iptables, 0, 0, 0644,
> /lib/systemd/system/ip6tables.service)
> + @$(call install_link, iptables, ../ip6tables.service,
> /lib/systemd/system/multi-user.target.wants/ip6tables.service)
@$(call install_link, iptables, ../ip6tables.service, \
/lib/systemd/system/multi-user.target.wants/ip6tables.service)
Break like this.
> +endif
> +
> +ifdef PTXCONF_IPTABLES_IPV4_SYSTEMD_UNIT
> +# # IPv4 systemd service unit part
> + @$(call install_alternative, iptables, 0, 0, 0644,
> /etc/iptables/rules.v4)
> + @$(call install_alternative, iptables, 0, 0, 0755,
> /usr/sbin/iptables-flush)
> + @$(call install_alternative, iptables, 0, 0, 0644,
> /lib/systemd/system/iptables.service)
> + @$(call install_link, iptables, ../iptables.service,
> /lib/systemd/system/multi-user.target.wants/iptables.service)
Same here.
Michael
> +endif
> +
> endif
>
> ifdef PTXCONF_IPTABLES_INSTALL_IPTABLES_APPLY
> --
> 1.9.1
>
>
> _______________________________________________
> ptxdist mailing list
> [email protected]
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
_______________________________________________
ptxdist mailing list
[email protected]
