diff options
| -rw-r--r-- | puppet/manifests/setup.pp | 2 | ||||
| -rw-r--r-- | puppet/modules/site_config/manifests/firewall.pp | 62 | ||||
| -rw-r--r-- | puppet/modules/site_config/templates/ipv4firewall_up.rules.erb | 20 | ||||
| -rw-r--r-- | puppet/modules/site_config/templates/ipv6firewall_up.rules.erb | 7 | ||||
| -rw-r--r-- | puppet/modules/site_shorewall/manifests/defaults.pp | 28 | ||||
| -rw-r--r-- | puppet/modules/site_shorewall/manifests/sshd.pp | 6 |
6 files changed, 123 insertions, 2 deletions
diff --git a/puppet/manifests/setup.pp b/puppet/manifests/setup.pp index d9e5229e..84e4c056 100644 --- a/puppet/manifests/setup.pp +++ b/puppet/manifests/setup.pp @@ -9,6 +9,8 @@ include concat::setup include site_config::hosts +include site_config::initial_firewall + include site_apt package { 'facter': diff --git a/puppet/modules/site_config/manifests/firewall.pp b/puppet/modules/site_config/manifests/firewall.pp new file mode 100644 index 00000000..b9fc5ffe --- /dev/null +++ b/puppet/modules/site_config/manifests/firewall.pp @@ -0,0 +1,62 @@ +class site_config::initial_firewall { + + # This class is intended to setup an initial firewall, before shorewall is + # configured. The purpose of this is for the rare case where shorewall fails + # to start, we should not expose services to the public. + + $ssh_config = hiera('ssh') + $ssh_port = $ssh_config['port'] + + package { 'iptables': + ensure => present + } + + file { + # This firewall enables ssh access, dns lookups and web lookups (for + # package installation) but otherwise restricts all outgoing and incoming + # ports + '/etc/network/ipv4firewall_up.rules': + content => template('site_config/ipv4firewall_up.rules.erb'), + owner => root, + group => 0, + mode => '0644'; + + # This firewall denys all ipv6 traffic - we will need to change this + # when we begin to support ipv6 + '/etc/network/ipv6firewall_up.rules': + content => template('site_config/ipv6firewall_up.rules.erb'), + owner => root, + group => 0, + mode => '0644'; + + # Run the iptables-restore in if-pre-up so that the network is locked down + # until the correct interfaces and ips are connected + '/etc/network/if-pre-up.d/ipv4tables': + content => "#!/bin/sh\n/sbin/iptables-restore < /etc/network/ipv4firewall_up.rules\n", + owner => root, + group => 0, + mode => '0744'; + + # Same as above for IPv6 + '/etc/network/if-pre-up.d/ipv6tables': + content => "#!/bin/sh\n/sbin/ip6tables-restore < /etc/network/ipv6firewall_up.rules\n", + owner => root, + group => 0, + mode => '0744'; + } + + # Immediately setup these firewall rules, but only if shorewall is not running + exec { + 'default_ipv4_firewall': + command => '/sbin/iptables-restore < /etc/network/ipv4firewall_up.rules', + logoutput => true, + unless => '/sbin/shorewall status', + require => File['/etc/network/ipv4firewall_up.rules']; + + 'default_ipv6_firewall': + command => '/sbin/ip6tables-restore < /etc/network/ipv6firewall_up.rules', + logoutput => true, + unless => '/sbin/shorewall status', + require => File['/etc/network/ipv6firewall_up.rules']; + } +} diff --git a/puppet/modules/site_config/templates/ipv4firewall_up.rules.erb b/puppet/modules/site_config/templates/ipv4firewall_up.rules.erb new file mode 100644 index 00000000..c03716f3 --- /dev/null +++ b/puppet/modules/site_config/templates/ipv4firewall_up.rules.erb @@ -0,0 +1,20 @@ +# Generated by iptables-save v1.4.14 on Tue Aug 20 14:40:40 2013 +*filter +:INPUT DROP [0:0] +:FORWARD DROP [0:0] +:OUTPUT DROP [0:0] +-A INPUT -i lo -j ACCEPT +-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT +-A INPUT -p tcp -m state --state NEW,ESTABLISHED --dport <%= @ssh_port %> -j ACCEPT +-A INPUT -p udp -m udp --sport 53 -j ACCEPT +-A INPUT -p icmp -m icmp --icmp-type 8 -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT +-A INPUT -p icmp -m icmp --icmp-type 0 -m state --state RELATED,ESTABLISHED -j ACCEPT +-A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7 +-A OUTPUT -p icmp -m icmp --icmp-type 0 -m state --state RELATED,ESTABLISHED -j ACCEPT +-A OUTPUT -p icmp -m icmp --icmp-type 8 -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT +-A OUTPUT -p tcp -m state --state NEW,ESTABLISHED --sport <%= @ssh_port %> -j ACCEPT +-A OUTPUT -p tcp -m state --state NEW,ESTABLISHED --dport 80 -j ACCEPT +-A OUTPUT -p udp -m udp --dport 53 -j ACCEPT +-A OUTPUT -p udp -m udp --dport 123 -j ACCEPT +-A OUTPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7 +COMMIT diff --git a/puppet/modules/site_config/templates/ipv6firewall_up.rules.erb b/puppet/modules/site_config/templates/ipv6firewall_up.rules.erb new file mode 100644 index 00000000..e7fae52e --- /dev/null +++ b/puppet/modules/site_config/templates/ipv6firewall_up.rules.erb @@ -0,0 +1,7 @@ +# Generated by ip6tables-save v1.4.20 on Tue Aug 20 12:19:43 2013 +*filter +:INPUT DROP [24:1980] +:FORWARD DROP [0:0] +:OUTPUT DROP [14:8030] +COMMIT +# Completed on Tue Aug 20 12:19:43 2013 diff --git a/puppet/modules/site_shorewall/manifests/defaults.pp b/puppet/modules/site_shorewall/manifests/defaults.pp index c62c9307..35e47982 100644 --- a/puppet/modules/site_shorewall/manifests/defaults.pp +++ b/puppet/modules/site_shorewall/manifests/defaults.pp @@ -1,4 +1,5 @@ class site_shorewall::defaults { + include shorewall include site_config::params @@ -18,8 +19,6 @@ class site_shorewall::defaults { options => 'tcpflags,blacklist,nosmurfs'; } - shorewall::routestopped { $site_config::params::interface: } - shorewall::policy { 'fw-to-all': sourcezone => 'fw', @@ -42,5 +41,30 @@ class site_shorewall::defaults { order => 200; } + package { 'shorewall-init': + ensure => installed + } + + augeas { + # stop instead of clear firewall on shutdown + 'shorewall_SAFESTOP': + changes => 'set /files/etc/shorewall/shorewall.conf/SAFESTOP Yes', + lens => 'Shellvars.lns', + incl => '/etc/shorewall/shorewall.conf', + notify => Service[shorewall]; + # require that the interface exist + 'shorewall_REQUIRE_INTERFACE': + changes => 'set /files/etc/shorewall/shorewall.conf/REQUIRE_INTERFACE Yes', + lens => 'Shellvars.lns', + incl => '/etc/shorewall/shorewall.conf', + notify => Service[shorewall]; + # configure shorewall-init + 'shorewall-init': + changes => 'set /files/etc/default/shorewall-init/PRODUCTS shorewall', + lens => 'Shellvars.lns', + incl => '/etc/default/shorewall-init', + require => [ Package['shorewall-init'], Service['shorewall'] ] + } + include site_shorewall::sshd } diff --git a/puppet/modules/site_shorewall/manifests/sshd.pp b/puppet/modules/site_shorewall/manifests/sshd.pp index a8e09e42..88b4102c 100644 --- a/puppet/modules/site_shorewall/manifests/sshd.pp +++ b/puppet/modules/site_shorewall/manifests/sshd.pp @@ -21,4 +21,10 @@ class site_shorewall::sshd { action => 'leap_sshd(ACCEPT)', order => 200; } + + # setup a routestopped rule to allow ssh when shorewall is stopped + shorewall::routestopped { $site_config::params::interface: + options => "- tcp ${ssh_port}" + } + } |