'\" t
.\"     Title: shorewall-init
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 09/24/2020
.\"    Manual: Administrative Commands
.\"    Source: Administrative Commands
.\"  Language: English
.\"
.TH "SHOREWALL\-INIT" "8" "09/24/2020" "Administrative Commands" "Administrative Commands"
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.SH "NAME"
shorewall-init \- Companion package
.SH "SYNOPSIS"
.HP \w'\fBshorewall\-init\fR\ 'u
\fBshorewall\-init\fR [start|stop]
.SH "DESCRIPTION"
.PP
Shorewall\-init is an optional package (added in Shorewall 4\&.4\&.10) that can be installed along with Shorewall, Shorewall6, Shorewall\-lite and/or Shorewall6\-lite\&. It provides two key features:
.sp
.RS 4
.ie n \{\
\h'-04' 1.\h'+01'\c
.\}
.el \{\
.sp -1
.IP "  1." 4.2
.\}
It can close (stop) the firewall during boot prior to starting the network\&. This can prevent unwanted connections from being accepted after the network comes up but before the firewall is started\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04' 2.\h'+01'\c
.\}
.el \{\
.sp -1
.IP "  2." 4.2
.\}
It can interface with your distribution\*(Aqs ifup/ifdown scripts and/or NetworkManager to allow firewall actions when an interface starts or stops\&.
.RE
.PP
These two capabilities can be enabled separately\&.
.PP
After you install the shorewall\-init package, you can activate it by modifying the
Shorewall\-init configuration file:
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
On Debian\-based system, the file is
/etc/default/shorewall\-init\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
On other systems, the file is
/etc/sysconfig/shorewall\-init\&.
.RE
.PP
To activate the safe boot feature, edit the configuration file and set PRODUCTS to a space\-separated list of Shorewall products that you want to be closed before networking starts\&.
.PP
Example:
.RS 4
PRODUCTS="shorewall shorewall6"
.RE
.PP
You also must insure that the compiled scripts for the listed products are compiled using Shorewall 4\&.4\&.10 or later\&.
.PP
Shorewall
.RS 4
\fBshorewall compile\fR
.RE
.PP
Shorewall6
.RS 4
\fBshorewall6 compile\fR
.RE
.PP
Shorewall\-lite
.RS 4
On the administrative system, enter the command
\fBshorewall export firewall\fR
from the firewall\*(Aqs configuration directory\&.
.RE
.PP
Shorewall6\-lite
.RS 4
On the administrative system, enter the command
\fBshorewall6 export firewall\fR
from the firewall\*(Aqs configuration directory\&.
.RE
.PP
The second feature (ifup/ifdown and NetworkManager integration) should only be activated on systems that do not use a link status monitor line swping or LSM\&.
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Edit the configuration file and set IFUPDOWN=1
.RE
.PP
For NetworkManager integration, you will want to disable firewall startup at boot and delay it to when your interface comes up\&. For this to work correctly, you must set the
required
or the
optional
option on at least one interface then:
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
On Debian\-based systems, edit /etc/default/\fIproduct\fR
for each
\fIproduct\fR
listed in the PRODUCTS setting and set
\fBstartup=0\fR\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
On other systems, use the distribution\*(Aqs service control tool (insserv, chkconfig, etc\&.) to disable startup of the products listed in the PRODUCTS setting\&.
.RE
.PP
On a laptop with both Ethernet and wireless interfaces, you will want to make both interfaces optional and set the REQUIRE_INTERFACE option to Yes in
\m[blue]\fBshorewall\&.conf\fR\m[]\&\s-2\u[1]\d\s+2(5) or
\m[blue]\fBshorewall6\&.conf\fR\m[]\&\s-2\u[1]\d\s+2
(5)\&. This causes the firewall to remain stopped until at least one of the interfaces comes up\&.
.SH "FILES"
.PP
/etc/default/shorewall\-init
(Debian\-based systems) or
/etc/sysconfig/shorewall\-init
(other distributions)
.SH "SEE ALSO"
.PP
shorewall(8)
.SH "NOTES"
.IP " 1." 4
shorewall.conf
.RS 4
\%https://shorewall.org/manpages/shorewall.conf.html
.RE