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|
class firewall::implementations::shorewall(
$device = lookup('firewall::device', undef, undef, 'eth0'),
$zone = lookup('firewall::zone', undef, undef, '-'),
$local_net = lookup('firewall::local_net', undef, undef, false),
$device_options = lookup('firewall::device_options', undef, undef, 'tcpflags,blacklist,routefilter,nosmurfs,logmartians'),
$vm_address = lookup('firewall::vm_address', undef, undef, '192.168.0.0/24'),
$vm_device = lookup('firewall::vm_device', undef, undef, false),
$ssh = lookup('firewall::ssh', undef, undef, 'ACCEPT'),
) {
class { 'shorewall': }
$rfc1918 = $local_net ? {
true => true,
false => false,
default => false,
}
$real_subnet_device = $vm_device ? {
false => $device,
default => $vm_device,
}
$real_masq_interface = $vm_device ? {
false => "${device}:!${vm_address}",
default => "${device}",
}
#
# Zones
#
shorewall::zone { 'vm':
type => 'ipv4',
order => '2',
}
shorewall::zone { 'net':
type => 'ipv4',
order => '3',
}
shorewall::zone { 'loc':
type => 'ipv4',
order => 4,
}
#
# Interfaces
#
shorewall::interface { "${device}":
zone => $zone,
rfc1918 => $rfc1918,
options => $device_options,
}
if $vm_device != false {
shorewall::interface { "${vm_device}":
zone => $zone,
rfc1918 => $rfc1918,
options => $device_options,
}
}
#
# Hosts
#
shorewall::host { "${real_subnet_device}-subnet":
name => "${real_subnet_device}:${vm_address}",
zone => 'vm',
options => '',
order => '1',
}
if $zone == '-' {
shorewall::host { "${device}":
name => "${device}:0.0.0.0/0",
zone => 'net',
options => '',
order => '2',
}
}
#
# Policy
#
shorewall::policy { 'vm-net':
sourcezone => 'vm',
destinationzone => 'net',
policy => 'ACCEPT',
order => 1,
}
shorewall::policy { 'fw-net':
sourcezone => '$FW',
destinationzone => 'net',
policy => 'ACCEPT',
order => 2,
}
shorewall::policy { 'fw-vm':
sourcezone => '$FW',
destinationzone => 'vm',
policy => 'ACCEPT',
order => 3,
}
shorewall::policy { 'vm-fw':
sourcezone => 'vm',
destinationzone => '$FW',
policy => 'ACCEPT',
order => 4,
}
shorewall::policy { 'net-all':
sourcezone => 'net',
destinationzone => 'all',
policy => 'DROP',
order => 5,
}
shorewall::policy { 'all-all':
sourcezone => 'all',
destinationzone => 'all',
policy => 'REJECT',
order => 90,
}
#
# Masq
#
shorewall::masq { "${device}":
interface => "${real_masq_interface}",
source => "${vm_address}",
order => '1',
}
#
# Rules
#
shorewall::rule { 'ssh':
action => "SSH/${ssh}",
source => 'net',
destination => '$FW',
proto => '-',
destinationport => '-',
ratelimit => '-',
order => 100,
}
shorewall::rule { 'ping':
action => 'Ping/ACCEPT',
source => 'net',
destination => '$FW',
proto => '-',
destinationport => '-',
ratelimit => '-',
order => 101,
}
shorewall::rule { 'http':
action => 'HTTP/ACCEPT',
source => 'net',
destination => '$FW',
proto => '-',
destinationport => '-',
ratelimit => '-',
order => 102,
}
# SSL computational DoS mitigation
# See http://vincent.bernat.im/en/blog/2011-ssl-dos-mitigation.html
shorewall::rule { 'https':
action => 'HTTPS/ACCEPT',
source => 'net',
destination => '$FW',
proto => '-',
destinationport => '-',
ratelimit => lookup("firewall::ssl_ratelimit", undef, undef, '-'),
order => 103,
}
#$munin_port = $node_munin_port ? {
# '' => "4900",
# default => "$node_munin_port",
#}
#shorewall::rule { "munin":
# action => 'ACCEPT',
# source => 'net',
# destination => '$FW',
# proto => 'tcp',
# destinationport => "$munin_port",
# ratelimit => '-',
# order => 104,
#}
if $local_net == true {
class { "firewall::local": }
}
}
|
