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nftables #41

Merged
kunsi merged 3 commits from kunsi-nftables into main 2021-06-03 12:21:09 +00:00
Conversation 1 Commits 3 Files changed 37 +370 -349
37 changed files with 370 additions and 349 deletions
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18
bundles/dhcpd/metadata.py
View file

@ -37,18 +37,20 @@ def get_static_allocations(metadata):
@metadata_reactor.provides(
'iptables/bundle_rules/dhcpd',
'nftables/rules/input/dhcpd',
)
def iptables(metadata):
def nftables(metadata):
rules = set()
for subnet in node.metadata.get('dhcpd/subnets', {}):
rules.add('iptables -A INPUT -i {} -p udp --dport 67:68 -j ACCEPT'.format(subnet))
for iface in node.metadata.get('dhcpd/subnets', {}):
rules.add(f'udp dport {{ 67, 68 }} iif {iface} accept')
return {
'iptables': {
'bundle_rules': {
# can't use port_rules here, because we're generating interface based rules.
'dhcpd': sorted(list(rules)),
'nftables': {
'rules': {
'input': {
# can't use port_rules here, because we're generating interface based rules.
'dhcpd': sorted(rules),
},
},
}
}

10
bundles/dovecot/metadata.py
View file

@ -76,13 +76,13 @@ def import_database_settings_from_postfixadmin(metadata):
@metadata_reactor.provides(
'iptables/port_rules/143',
'iptables/port_rules/993',
'iptables/port_rules/4190',
'firewall/port_rules/143',
'firewall/port_rules/993',
'firewall/port_rules/4190',
)
def iptables(metadata):
def firewall(metadata):
return {
'iptables': {
'firewall': {
'port_rules': {
# imap(s)
'143': atomic(metadata.get('dovecot/restrict-to', {'*'})),

6
bundles/icinga2/metadata.py
View file

@ -103,11 +103,11 @@ def add_users_from_json(metadata):
@metadata_reactor.provides(
'iptables/port_rules/5665',
'firewall/port_rules/5665',
)
def iptables(metadata):
def firewall(metadata):
return {
'iptables': {
'firewall': {
'port_rules': {
'5665': atomic(metadata.get('icinga2/restrict-to', set())),
},

85
bundles/iptables/files/iptables-enforce
View file

@ -1,85 +0,0 @@
#!/bin/bash
% if not node.metadata.get('iptables/enabled', True):
exit 0
% endif
lock_try=0
while ! mkdir /run/bw-iptables.lock >/dev/null 2>&1
do
((lock_try++))
if (( lock_try == 10 ))
then
echo 'FATAL: iptables-enforce: Could not get lock!' >&2
exit 1
fi
sleep 1
done
trap 'rmdir /run/bw-iptables.lock' EXIT
iptables_both()
{
iptables "$@"
ip6tables "$@"
}
iptables_both -P INPUT DROP
iptables_both -P OUTPUT ACCEPT
iptables_both -P FORWARD DROP
iptables_both -F
iptables_both -X
iptables_both -t nat -F
iptables_both -t nat -X
iptables_both -t nat -Z
iptables_both -t filter -F
iptables_both -t filter -X
iptables_both -t filter -Z
iptables_both -t mangle -F
iptables_both -t mangle -X
iptables_both -t mangle -Z
# Workaround for CVE-2019-11477, CVE-2019-11478 and CVE-2019-11479
# https://www.openwall.com/lists/oss-security/2019/06/17/5
# https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-11477.html
iptables_both -I INPUT -p tcp -m tcpmss --mss 1:500 -j DROP
# Dummy rules to make sure the conntrack table(s) will be updated.
iptables_both -I INPUT -m state --state NEW,ESTABLISHED,RELATED
iptables_both -I OUTPUT -m state --state NEW,ESTABLISHED,RELATED
iptables_both -I FORWARD -m state --state NEW,ESTABLISHED,RELATED
# open up local loopback
iptables_both -A INPUT -i lo -j ACCEPT
# Set Up counting rules
% for ip in sorted(ipv4):
iptables -A INPUT -d ${ip}
iptables -A OUTPUT -s ${ip}
% endfor
% for ip in sorted(ipv6):
ip6tables -A INPUT -d ${ip}
ip6tables -A OUTPUT -s ${ip}
% endfor
iptables -A INPUT -p ICMP --icmp-type timestamp-request -j DROP
iptables -A INPUT -p ICMP --icmp-type timestamp-reply -j DROP
# allow ICMP -- answers for IPv4 are covered by conntrack
iptables -A INPUT -p icmp -j ACCEPT
# ICMP6 is used for so many things, we should under no circumstances
# ignore it and thus should not rely on any conntrack heuristics.
ip6tables -A INPUT -p ipv6-icmp -j ACCEPT
# Allow incoming answers. Install this first (before the larger ruleset
# from /etc/network/iptables-rules.d/), so that iptables can match/exit
# early.
iptables_both -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
shopt -s nullglob
for i in /etc/iptables-rules.d/*
do
. "$i"
done
cat /etc/sysctl.d/*.conf /etc/sysctl.conf | sysctl -e -p -

11
bundles/iptables/files/iptables-enforce.service
View file

@ -1,11 +0,0 @@
[Unit]
Description=Run iptables-enforce after networkd startup
Requires=network-online.target
After=network-online.target
[Service]
Type=oneshot
ExecStart=/usr/local/sbin/iptables-enforce
[Install]
WantedBy=multi-user.target

66
bundles/iptables/items.py
View file

@ -1,66 +0,0 @@
directories = {
'/etc/iptables-rules.d': {
'purge': True,
'triggers': {
'action:iptables_enforce',
},
},
}
files = {
'/etc/systemd/system/iptables-enforce.service': {
'triggers': {
'action:systemd-reload',
},
},
'/usr/local/sbin/iptables-enforce': {
'content_type': 'mako',
'context': repo.libs.tools.resolve_identifier(repo, node.name),
'mode': '0700',
'triggers': {
'action:iptables_enforce',
},
},
}
enforce_deps = {
'directory:/etc/iptables-rules.d',
'file:/usr/local/sbin/iptables-enforce',
}
for bundle, rules in node.metadata.get('iptables/bundle_rules', {}).items():
files[f'/etc/iptables-rules.d/20-{bundle}'] = {
# We must never use sorted() here. Bundles might rely on their order.
'content': '\n'.join(rules) + '\n',
'triggers': {
'action:iptables_enforce',
},
}
enforce_deps.add(f'file:/etc/iptables-rules.d/20-{bundle}')
if 'custom_rules' in node.metadata.get('iptables', {}):
files['/etc/iptables-rules.d/40-custom'] = {
'content': '\n'.join(node.metadata['iptables']['custom_rules']) + '\n',
'triggers': {
'action:iptables_enforce',
},
}
enforce_deps.add('file:/etc/iptables-rules.d/40-custom')
actions = {
'iptables_enforce': {
'command': '/usr/local/sbin/iptables-enforce',
'triggered': True,
'needs': enforce_deps,
},
}
svc_systemd = {
'iptables-enforce': {
'running': None,
'needs': {
'file:/etc/systemd/system/iptables-enforce.service',
},
},
}

61
bundles/iptables/metadata.py
View file

@ -1,61 +0,0 @@
from bundlewrap.exceptions import BundleError
defaults = {
'pacman': {
'packages': {
'iptables': {},
},
},
}
@metadata_reactor.provides(
'iptables/bundle_rules/iptables',
)
def port_rules_to_iptables(metadata):
# Using this, bundles can simply set up port based rules. This
# reactor will then take care of converting those rules to actual
# iptables rules
ruleset = set()
# Plese note we do not set any defaults for ports. Bundles are
# expected to know themselves which default to use.
for portdef, targets in metadata.get('iptables/port_rules', {}).items():
if '/' in portdef:
port, proto = portdef.split('/', 2)
if proto not in {'udp'}:
raise BundleError(f'iptables/port_rules: illegal identifier {portdef} in metadata for {node.name}')
else:
port = portdef
proto = 'tcp'
for target in targets:
if port == '*' and target == '*':
raise BundleError('iptables/port_rules: setting both port and target to * is unsupported')
comment = f'-m comment --comment "iptables port_rules {target}"'
if port != '*':
port_str = f'--dport {port}'
else:
port_str = ''
if target == '*':
ruleset.add(f'iptables_both -A INPUT -p {proto} {port_str} {comment} -j ACCEPT')
else:
resolved = repo.libs.tools.resolve_identifier(repo, target)
for address in resolved['ipv4']:
ruleset.add(f'iptables -A INPUT -p {proto} -s {address} {port_str} {comment} -j ACCEPT')
for address in resolved['ipv6']:
ruleset.add(f'ip6tables -A INPUT -p {proto} -s {address} {port_str} {comment} -j ACCEPT')
return {
'iptables': {
'bundle_rules': {
# order does not matter here.
'iptables': list(sorted(ruleset)),
},
},
}

6
bundles/kodi/metadata.py
View file

@ -44,11 +44,11 @@ defaults = {
@metadata_reactor.provides(
'iptables/port_rules/8080',
'firewall/port_rules/8080',
)
def iptables(metadata):
def firewall(metadata):
return {
'iptables': {
'firewall': {
'port_rules': {
'8080': atomic(metadata.get('kodi/restrict-to', {'*'})),
},

6
bundles/mosquitto/metadata.py
View file

@ -26,9 +26,9 @@ defaults = {
@metadata_reactor.provides(
'iptables/port_rules',
'firewall/port_rules',
)
def iptables(metadata):
def firewall(metadata):
sources = metadata.get('mosquitto/restrict-to', {'*'})
result = {}
@ -36,7 +36,7 @@ def iptables(metadata):
result[listener] = atomic(sources)
return {
'iptables': {
'firewall': {
'port_rules': result,
},
}

6
bundles/netdata/metadata.py
View file

@ -19,11 +19,11 @@ defaults = {
@metadata_reactor.provides(
'iptables/port_rules/19999',
'firewall/port_rules/19999',
)
def iptables(metadata):
def firewall(metadata):
return {
'iptables': {
'firewall': {
'port_rules': {
'19999': atomic(metadata.get('netdata/restrict-to', set())),
},

6
bundles/nfs-server/metadata.py
View file

@ -10,9 +10,9 @@ defaults = {
@metadata_reactor.provides(
'iptables/port_rules',
'firewall/port_rules',
)
def iptables(metadata):
def firewall(metadata):
ips = set()
for share_items in metadata.get('nfs-server/shares', {}).values():
@ -20,7 +20,7 @@ def iptables(metadata):
ips.add(share_target)
return {
'iptables': {
'firewall': {
'port_rules': {
'111': atomic(ips),
'111/udp': atomic(ips),

72
bundles/nftables/files/nftables.conf Normal file
View file

@ -0,0 +1,72 @@
#!/usb/sbin/nft -f
flush ruleset
table inet filter {
chain input {
type filter hook input priority 0
policy drop
tcp flags syn tcp option maxseg size 1-500 drop
ct state { established, related } accept
ct state invalid drop
iif lo accept
icmp type timestamp-request drop
icmp type timestamp-reply drop
ip protocol icmp accept
ip6 nexthdr ipv6-icmp accept
% for ruleset, rules in sorted(node.metadata.get('nftables/rules/input', {}).items()):
# ${ruleset}
% for rule in rules:
${rule}
% endfor
# / ${ruleset}
% endfor
}
chain output {
type filter hook output priority 0
policy accept
}
chain forward {
type filter hook forward priority 0
policy drop
icmp type timestamp-request drop
icmp type timestamp-reply drop
% for ruleset, rules in sorted(node.metadata.get('nftables/rules/forward', {}).items()):
# ${ruleset}
% for rule in rules:
${rule}
% endfor
# / ${ruleset}
% endfor
}
}
table nat {
chain prerouting {
type nat hook prerouting priority -100
% for rule in node.metadata.get('nftables/rules/nat_prerouting', []):
${rule}
% endfor
}
chain postrouting {
type nat hook postrouting priority 100
% for rule in node.metadata.get('nftables/rules/nat_postrouting', []):
${rule}
% endfor
}
}
include "/etc/nftables-rules.d/*-*"

35
bundles/nftables/items.py Normal file
View file

@ -0,0 +1,35 @@
if node.has_bundle('pacman'):
package = 'pkg_pacman:nftables'
else:
package = 'pkg_apt:nftables'
directories = {
# used by other bundles
'/etc/nftables-rules.d': {
'purge': True,
'triggers': {
'svc_systemd:nftables:reload',
},
},
}
files = {
'/etc/nftables.conf': {
'content_type': 'mako',
'needs': {
'directory:/etc/nftables-rules.d',
},
'triggers': {
'svc_systemd:nftables:reload',
},
},
}
svc_systemd = {
'nftables': {
'needs': {
'file:/etc/nftables.conf',
package,
},
},
}

91
bundles/nftables/metadata.py Normal file
View file

@ -0,0 +1,91 @@
from bundlewrap.exceptions import BundleError
defaults = {
'apt': {
'packages': {
'nftables': {},
# XXX remove after all systems have been migrated
},
},
'pacman': {
'packages': {
'nftables': {},
'iptables-nft': {
# uninstalls iptables automatically
'needed_by': {
'pkg_pacman:nftables',
},
},
},
},
}
if not node.has_bundle('vmhost'):
# see comment in bundles/vmhost/items.py
defaults['apt']['packages']['iptables'] = {
'installed': False,
'needed_by': {
'pkg_apt:nftables',
},
}
@metadata_reactor.provides(
'nftables/rules/input/port_rules',
)
def port_rules_to_nftables(metadata):
# Using this, bundles can simply set up port based rules. This
# reactor will then take care of converting those rules to actual
# nftables rules
ruleset = set()
# Plese note we do not set any defaults for ports. Bundles are
# expected to know themselves which default to use.
for portdef, targets in metadata.get('firewall/port_rules', {}).items():
if '/' in portdef:
port, proto = portdef.split('/', 2)
if proto not in {'udp'}:
raise BundleError(f'firewall/port_rules: illegal identifier {portdef} in metadata for {node.name}')
else:
port = portdef
proto = 'tcp'
for target in targets:
if port == '*' and target == '*':
raise BundleError('firewall/port_rules: setting both port and target to * is unsupported')
comment = f'# port_rules {target}'
if port != '*':
if ':' in port:
parts = port.split(':')
port_str = f'dport {{ {parts[0]}-{parts[1]} }} '
else:
port_str = f'dport {port} '
prefix = ''
else:
port_str = ''
prefix = 'meta l4proto '
if target == '*':
ruleset.add(f'{prefix}{proto} {port_str}accept {comment}')
else:
resolved = repo.libs.tools.resolve_identifier(repo, target)
for address in resolved['ipv4']:
ruleset.add(f'{prefix}{proto} {port_str}ip saddr {address} accept {comment}')
for address in resolved['ipv6']:
ruleset.add(f'{prefix}{proto} {port_str}ip6 saddr {address} accept {comment}')
return {
'nftables': {
'rules': {
# order does not matter here.
'input': {
'port_rules': sorted(ruleset),
},
},
},
}

8
bundles/nginx/metadata.py
View file

@ -169,12 +169,12 @@ def monitoring(metadata):
@metadata_reactor.provides(
'iptables/port_rules/80',
'iptables/port_rules/443',
'firewall/port_rules/80',
'firewall/port_rules/443',
)
def iptables(metadata):
def firewall(metadata):
return {
'iptables': {
'firewall': {
'port_rules': {
'80': atomic(metadata.get('nginx/restrict-to', {'*'})),
'443': atomic(metadata.get('nginx/restrict-to', {'*'})),

6
bundles/oidentd/metadata.py
View file

@ -10,11 +10,11 @@ defaults = {
@metadata_reactor.provides(
'iptables/port_rules/113',
'firewall/port_rules/113',
)
def iptables(metadata):
def firewall(metadata):
return {
'iptables': {
'firewall': {
'port_rules': {
'113': atomic(metadata.get('oidentd/restrict-to', {'*'})),
},

6
bundles/openssh/metadata.py
View file

@ -16,11 +16,11 @@ defaults = {
}
@metadata_reactor.provides(
'iptables/port_rules/22',
'firewall/port_rules/22',
)
def iptables(metadata):
def firewall(metadata):
return {
'iptables': {
'firewall': {
'port_rules': {
'22': atomic(metadata.get('openssh/restrict-to', {'*'})),
},

2
bundles/postfix/files/main.cf
View file

@ -18,7 +18,7 @@ alias_maps = hash:/etc/aliases
relayhost = ${node.metadata['postfix']['relayhost']}
% endif
% if node.has_bundle('postfixadmin') or node.has_bundle('iptables'):
% if node.has_bundle('postfixadmin') or node.has_bundle('nftables'):
inet_interfaces = all
% else:
inet_interfaces = 127.0.0.1

10
bundles/postfix/metadata.py
View file

@ -100,11 +100,11 @@ def letsencrypt(metadata):
@metadata_reactor.provides(
'iptables/port_rules/25',
'iptables/port_rules/587',
'iptables/port_rules/2525',
'firewall/port_rules/25',
'firewall/port_rules/587',
'firewall/port_rules/2525',
)
def iptables(metadata):
def firewall(metadata):
if node.has_bundle('postfixadmin'):
default = {'*'}
else:
@ -119,7 +119,7 @@ def iptables(metadata):
rules['2525'] = atomic(metadata.get('postfix/restrict-to', default))
return {
'iptables': {
'firewall': {
'port_rules': rules,
},
}

6
bundles/powerdns/metadata.py
View file

@ -182,11 +182,11 @@ def hosts_entries_for_all_dns_servers(metadata):
@metadata_reactor.provides(
'iptables/port_rules',
'firewall/port_rules',
)
def iptables(metadata):
def firewall(metadata):
return {
'iptables': {
'firewall': {
'port_rules': {
'53': atomic(metadata.get('powerdns/restrict-to', {'*'})),
'53/udp': atomic(metadata.get('powerdns/restrict-to', {'*'})),

4
bundles/pppd/files/ip-down
View file

@ -1,6 +1,6 @@
#!/bin/bash
rm /etc/iptables-rules.d/90-pppd
rm /etc/nftables-rules.d/90-pppd
rm /etc/sysctl.d/90-pppd.conf
/usr/local/sbin/iptables-enforce
systemctl reload nftables

4
bundles/pppd/files/ip-up
View file

@ -2,9 +2,9 @@
INTERFACE=$1
echo "iptables -t nat -A POSTROUTING -o $INTERFACE -j MASQUERADE" > /etc/iptables-rules.d/90-pppd
echo "add rule nat postrouting oif $INTERFACE masquerade" > /etc/nftables-rules.d/90-pppd
echo "net.ipv6.conf.$INTERFACE.accept_ra=2" > /etc/sysctl.d/90-pppd.conf
/usr/local/sbin/iptables-enforce
systemctl reload nftables
rdisc6 $INTERFACE

6
bundles/pppd/items.py
View file

@ -32,7 +32,7 @@ directories = {
}
files = {
'/etc/iptables-rules.d/90-pppd': {
'/etc/nftables-rules.d/90-pppd': {
'content_type': 'any',
},
'/etc/ppp/chap-secrets': {
@ -53,11 +53,11 @@ files = {
'svc_systemd:pppoe:restart',
},
},
'/etc/ppp/ip-down.d/iptables': {
'/etc/ppp/ip-down.d/nftables': {
'source': 'ip-down',
'mode': '0755',
},
'/etc/ppp/ip-up.d/iptables': {
'/etc/ppp/ip-up.d/nftables': {
'source': 'ip-up',
'mode': '0755',
},

6
bundles/transmission/metadata.py
View file

@ -50,11 +50,11 @@ if node.has_bundle('telegraf'):
@metadata_reactor.provides(
'iptables/port_rules',
'firewall/port_rules',
)
def iptables(metadata):
def firewall(metadata):
return {
'iptables': {
'firewall': {
'port_rules': {
str(metadata.get('transmission/config/peer-port')): atomic({'*'}),
str(metadata.get('transmission/config/peer-port')) + '/udp': atomic({'*'}),

4
bundles/unbound/files/unbound.conf
View file

@ -10,8 +10,8 @@ server:
num-threads: ${threads}
% if node.has_bundle('iptables') and not node.has_bundle('vmhost'):
# Use iptables to manage access to this service
% if node.has_bundle('nftables') and not node.has_bundle('vmhost'):
# Use nftables to manage access to this service
interface: 0.0.0.0
interface: ::0
access-control: 0.0.0.0/0 allow

6
bundles/unbound/metadata.py
View file

@ -56,11 +56,11 @@ def cpu_cores_to_config_values(metadata):
@metadata_reactor.provides(
'iptables/port_rules',
'firewall/port_rules',
)
def iptables(metadata):
def firewall(metadata):
return {
'iptables': {
'firewall': {
'port_rules': {
'53': atomic(metadata.get('unbound/restrict-to', set())),
'53/udp': atomic(metadata.get('unbound/restrict-to', set())),

21
bundles/vmhost/items.py
View file

@ -3,3 +3,24 @@ files = {
'mode': '0755',
},
}
if node.has_bundle('nftables'):
# libvirt on debian depends on either iptables or firewalld. Since
# we're managing firewall rules using bundlewrap, we don't want either
# of thos to interfere. So we install firewalld, then ensure it is
# never running. After that, we ensure the bundlewrap managed rules
# are active.
svc_systemd['firewalld'] = {
'running': False,
'enabled': False,
'masked': True,
'needs': {
'pkg_apt:firewalld',
},
'needed_by': {
'svc_systemd:nftables',
},
'triggers': {
'svc_systemd:nftables:reload',
},
}

7
bundles/vmhost/metadata.py
View file

@ -28,3 +28,10 @@ if node.os == 'debian' and node.os_version[0] < 11:
if node.has_bundle('zfs'):
defaults['apt']['packages']['libvirt-daemon-driver-storage-zfs'] = {}
if node.has_bundle('nftables'):
defaults['apt']['packages']['firewalld'] = {
'needed_by': {
'pkg_apt:libvirt-daemon-system',
},
}

6
bundles/webfs/metadata.py
View file

@ -16,11 +16,11 @@ defaults = {
@metadata_reactor.provides(
'iptables/port_rules',
'firewall/port_rules',
)
def iptables(metadata):
def firewall(metadata):
return {
'iptables': {
'firewall': {
'port_rules': {
str(metadata.get('webfs/port')): atomic(metadata.get('webfs/restrict-to', {'*'})),
},

14
bundles/wide-dhcp6c/metadata.py
View file

@ -4,12 +4,14 @@ defaults = {
'wide-dhcpv6-client': {},
},
},
'iptables': {
'bundle_rules': {
'wide-dhcp6c': [
'ip6tables -A INPUT -p udp -s ff00::/12 -j ACCEPT',
'ip6tables -A INPUT -p udp -s fe80::/10 -j ACCEPT',
],
'nftables': {
'rules': {
'input': {
'wide-dhcp6c': [
'udp dport { 546, 547 } ip6 saddr ff00::/12 accept',
'udp dport { 546, 547 } ip6 saddr fe80::/10 accept',
],
},
},
},
'icinga2_api': {

20
bundles/wireguard/metadata.py
View file

@ -18,12 +18,14 @@ defaults = {
},
},
},
'iptables': {
'bundle_rules': {
'wireguard': [
'iptables_both -A FORWARD -i wg0 -j ACCEPT',
'iptables_both -A FORWARD -o wg0 -j ACCEPT',
],
'nftables': {
'rules': {
'forward': {
'wireguard': [
'iif wg0 accept',
'oif wg0 accept',
],
},
},
},
'wireguard': {
@ -149,9 +151,9 @@ def icinga2(metadata):
@metadata_reactor.provides(
'iptables/port_rules',
'firewall/port_rules',
)
def iptables(metadata):
def firewall(metadata):
sources = set(metadata.get('wireguard/restrict-to', set()))
for peer_name in metadata.get('wireguard/peers'):
try:
@ -162,7 +164,7 @@ def iptables(metadata):
sources.add(peer_name)
return {
'iptables': {
'firewall': {
'port_rules': {
'51820/udp': atomic(sources),
},

4
groups/os.py
View file

@ -20,7 +20,7 @@ groups['linux'] = {
'bundles': {
'basic',
'cron',
'iptables',
'nftables',
'openssh',
'postfix',
'sshmon',
@ -39,7 +39,7 @@ groups['linux'] = {
'backup-client': {
'server': 'franzi-home.kunbox.net:2022',
},
'iptables': {
'firewall': {
'port_rules': {
'*': {
'ovh.icinga2',

2
nodes/home/nas.py
View file

@ -55,7 +55,7 @@ nodes['home.nas'] = {
'groups': {
'nas': {},
},
'iptables': {
'firewall': {
'port_rules': {
'4679': { # Dell ULNM
'172.19.136.0/25',

37
nodes/home/router.py
View file

@ -94,24 +94,27 @@ nodes['home.router'] = {
'vars.notification.sms': True
},
'iptables': {
'custom_rules': [
# This is a router. Allow forwarding traffic for internal networks.
'iptables_both -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT',
'iptables_both -A FORWARD -i enp1s0.23 -o ppp0 -j ACCEPT',
'iptables_both -A FORWARD -i enp1s0.42 -j ACCEPT',
'nftables': {
'rules': {
'forward': {
'router': [
# This is a router. Allow forwarding traffic for internal networks.
'ct state { related, established } accept',
'iif enp1s0.23 oif ppp0 accept',
'iif enp1s0.42 accept',
# External port 2022 should be home.nas
'iptables -t nat -A PREROUTING -p tcp --dport 2022 -j DNAT --to 172.19.138.20:22',
'iptables -A FORWARD -p tcp -d 172.19.138.20 --dport 22 -j ACCEPT',
# use MASQUERADE for tun0 (c3voc)
'iptables -t nat -A POSTROUTING -o tun0 -j MASQUERADE',
# yaaaaay, IPv6! No NAT!
'ip6tables -A FORWARD -p ipv6-icmp -j ACCEPT',
'ip6tables -A FORWARD -p tcp --dport 22 -j ACCEPT',
],
# yaaaaay, IPv6! No NAT!
'ip6 nexthdr ipv6-icmp accept',
'tcp dport 22 accept',
],
},
'nat_prerouting': [
'tcp dport 2022 dnat 172.19.138.20:22',
],
'nat_postrouting': [
'oif tun0 masquerade',
],
},
},
'netdata': {
'restrict-to': {

17
nodes/htz-cloud/miniserver.py
View file

@ -83,13 +83,6 @@ nodes['htz-cloud.miniserver'] = {
'icinga_options': {
'vars.notification.sms': False,
},
'iptables': {
'custom_rules': [
'iptables_both -A INPUT -p udp --dport 60000:61000 -j ACCEPT', # mosh
'iptables_both -A INPUT -p tcp --dport 9001 -j ACCEPT', # weechat
],
},
'letsencrypt': {
'concat_and_deploy': {
'sophie-weechat': {
@ -151,6 +144,16 @@ nodes['htz-cloud.miniserver'] = {
'bot_token': '""',
},
},
'nftables': {
'rules': {
'input': {
'sophie-weechat': [
'udp dport { 60000-61000 } accept',
'tcp dport 9001 accept',
],
},
},
},
'nginx': {
'vhosts': {
#'dimension.sophies-kitchen.eu': {

42
nodes/htz/ex42-1048908.py
View file

@ -137,24 +137,6 @@ nodes['htz.ex42-1048908'] = {
'icinga_options': {
'pretty_name': 'kunsmann.eu',
},
'iptables': {
# TODO move to bundles
'custom_rules': [
'iptables_both -A INPUT -p udp --dport 60000:61000 -j ACCEPT', # mosh
'iptables_both -A INPUT -p tcp --dport 9001 -j ACCEPT', # weechat
# libvirt rules. These are also added by libvirt itself,
# but they would be overridden by our own iptables
# management.
'iptables -A INPUT -i virbr0 -p udp --dport 53 -j ACCEPT',
'iptables -A INPUT -i virbr0 -p tcp --dport 53 -j ACCEPT',
'iptables -A INPUT -i virbr0 -p udp --dport 67:68 -j ACCEPT',
'iptables -A INPUT -i virbr0 -p tcp --dport 67:68 -j ACCEPT',
'iptables -A FORWARD -i virbr0 -j ACCEPT',
'iptables -A FORWARD -o virbr0 -j ACCEPT',
'iptables -t nat -A POSTROUTING -o enp0s31f6 -j MASQUERADE',
],
},
'letsencrypt': {
'concat_and_deploy': {
'kunsi-weechat': {
@ -247,6 +229,30 @@ nodes['htz.ex42-1048908'] = {
'@.*:franzi\\\\.business',
},
},
'nftables': {
'rules': {
'input': {
'kunsi-weechat': [
'udp dport { 60000-61000 } accept',
'tcp dport 9001 accept',
],
'libvirt': [
'tcp dport 53 iif virbr0 accept',
'udp dport 53 iif virbr0 accept',
'udp dport { 67, 68 } iif virbr0 accept',
],
},
'forward': {
'libvirt': [
'iif virbr0 accept',
'oif virbr0 accept',
],
},
'nat_postrouting': {
'oif enp0s31f6 masquerade',
},
},
},
'nginx': {
'vhosts': {
# TODO maybe some of this can be moved to a bundle?

2
nodes/kunsi-t470.py
View file

@ -31,7 +31,7 @@ nodes['kunsi-t470'] = {
},
# there is also wlp4s0, but that's managed by netctl
},
'iptables': {
'firewall': {
'port_rules': {
# For the occasional file-share using `python -m http.server`
'8000': {'*'},