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# Configure shorewall on eip/vpn nodes
class site_shorewall::eip {
include site_shorewall::defaults
include site_config::params
include site_shorewall::ip_forward
# define macro for incoming services
file { '/etc/shorewall/macro.leap_eip':
content => "PARAM - - tcp 1194
PARAM - - udp 1194
",
notify => Exec['shorewall_check'],
require => Package['shorewall']
}
shorewall::interface {
'tun0':
zone => 'eip',
options => 'tcpflags,blacklist,nosmurfs';
'tun1':
zone => 'eip',
options => 'tcpflags,blacklist,nosmurfs';
'tun2':
zone => 'eip',
options => 'tcpflags,blacklist,nosmurfs';
'tun3':
zone => 'eip',
options => 'tcpflags,blacklist,nosmurfs';
}
shorewall::zone {
'eip':
type => 'ipv4';
}
$interface = $site_config::params::interface
shorewall::masq {
"${interface}_unlimited_tcp":
interface => $interface,
source => "${site_openvpn::openvpn_unlimited_tcp_network_prefix}.0/${site_openvpn::openvpn_unlimited_tcp_cidr}";
"${interface}_unlimited_udp":
interface => $interface,
source => "${site_openvpn::openvpn_unlimited_udp_network_prefix}.0/${site_openvpn::openvpn_unlimited_udp_cidr}";
}
if ! $::ec2_instance_id {
shorewall::masq {
"${interface}_limited_tcp":
interface => $interface,
source => "${site_openvpn::openvpn_limited_tcp_network_prefix}.0/${site_openvpn::openvpn_limited_tcp_cidr}";
"${interface}_limited_udp":
interface => $interface,
source => "${site_openvpn::openvpn_limited_udp_network_prefix}.0/${site_openvpn::openvpn_limited_udp_cidr}";
}
}
shorewall::policy {
'eip-to-all':
sourcezone => 'eip',
destinationzone => 'all',
policy => 'ACCEPT',
order => 100;
}
shorewall::rule {
'net2fw-openvpn':
source => 'net',
destination => '$FW',
action => 'leap_eip(ACCEPT)',
order => 200;
'block_eip_dns_udp':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'udp',
destinationport => 'domain',
order => 300;
'block_eip_dns_tcp':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'tcp',
destinationport => 'domain',
order => 301;
'accept_all_eip_to_eip_gateway_udp_unlimited':
action => 'ACCEPT',
source => 'eip',
destination => 'eip:10.41.0.1',
proto => 'all',
order => 302;
'accept_all_eip_to_eip_gateway_tcp_unlimited':
action => 'ACCEPT',
source => 'eip',
destination => 'eip:10.42.0.1',
proto => 'all',
order => 303;
'accept_all_eip_to_eip_gateway_udp_limited':
action => 'ACCEPT',
source => 'eip',
destination => 'eip:10.43.0.1',
proto => 'all',
order => 304;
'accept_all_eip_to_eip_gateway_tcp_limited':
action => 'ACCEPT',
source => 'eip',
destination => 'eip:10.44.0.1',
order => 305;
'reject_all_other_eip_to_eip':
action => 'REJECT',
source => 'eip',
destination => 'eip',
order => 306;
# Strict egress filtering:
# SMTP (TCP 25)
# Trivial File Transfer Protocol - TFTP (UDP 69)
# MS RPC (TCP & UDP 135)
# NetBIOS/IP (TCP/UDP 139 & UDP 137, UDP 138)
# Simple Network Management Protocol – SNMP (UDP/TCP 161-162)
# SMB/IP (TCP/UDP 445)
# Syslog (UDP 514)
# Gamqowi trojan: TCP 4661
# Mneah trojan: TCP 4666
'reject_outgoing_smtp':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'tcp',
destinationport => 'smtp',
order => 401;
'reject_outgoing_tftp':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'udp',
destinationport => 'tftp',
order => 402;
'reject_outgoing_ms_rpc_tcp':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'tcp',
destinationport => '135',
order => 403;
'reject_outgoing_ms_rpc_udp':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'udp',
destinationport => '135',
order => 404;
'reject_outgoing_netbios_tcp':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'tcp',
destinationport => '139',
order => 405;
'reject_outgoing_netbios_udp':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'tcp',
destinationport => '139',
order => 406;
'reject_outgoing_netbios_2':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'udp',
destinationport => '137',
order => 407;
'reject_outgoing_netbios_3':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'udp',
destinationport => '138',
order => 408;
'reject_outgoing_snmp_udp':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'udp',
destinationport => 'snmp',
order => 409;
'reject_outgoing_snmp_tcp':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'tcp',
destinationport => 'snmp',
order => 410;
'reject_outgoing_smb_udp':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'udp',
destinationport => '445',
order => 411;
'reject_outgoing_smb_tcp':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'tcp',
destinationport => '445',
order => 412;
'reject_outgoing_syslog':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'udp',
destinationport => 'syslog',
order => 413;
'reject_outgoing_gamqowi':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'tcp',
destinationport => '4661',
order => 414;
'reject_outgoing_mneah':
action => 'REJECT',
source => 'eip',
destination => 'net',
proto => 'tcp',
destinationport => '4666',
order => 415;
}
# create dnat rule for each port
site_shorewall::dnat_rule { $site_openvpn::openvpn_ports: }
}
|
