diff options
Diffstat (limited to 'roles/common/templates')
| -rw-r--r-- | roles/common/templates/etc/fail2ban/jail.local.j2 | 2 | ||||
| -rw-r--r-- | roles/common/templates/etc/ipsec.conf.j2 | 43 | ||||
| -rw-r--r-- | roles/common/templates/etc/ipsec.secrets.j2 | 5 | ||||
| -rw-r--r-- | roles/common/templates/etc/iptables/services.j2 | 7 | ||||
| -rwxr-xr-x | roles/common/templates/etc/network/if-up.d/ipsec.j2 | 47 |
5 files changed, 103 insertions, 1 deletions
diff --git a/roles/common/templates/etc/fail2ban/jail.local.j2 b/roles/common/templates/etc/fail2ban/jail.local.j2 index f1c9833..eb6a7fb 100644 --- a/roles/common/templates/etc/fail2ban/jail.local.j2 +++ b/roles/common/templates/etc/fail2ban/jail.local.j2 @@ -14,7 +14,7 @@ chain = fail2ban action = %(action_)s # Don't ban ourselves. -ignoreip = 127.0.0.0/8 {{ groups.all | sort | join(' ') }} +ignoreip = 127.0.0.0/8 {{ ipsec_subnet }} # # JAILS diff --git a/roles/common/templates/etc/ipsec.conf.j2 b/roles/common/templates/etc/ipsec.conf.j2 new file mode 100644 index 0000000..4d6aa68 --- /dev/null +++ b/roles/common/templates/etc/ipsec.conf.j2 @@ -0,0 +1,43 @@ +# {{ ansible_managed }} +# Do NOT edit this file directly! + +config setup + charondebug = "dmn 0, lib 0, cfg 0, ike 0, enc 0, net 0" + +conn %default + keyexchange = ikev2 + keyingtries = %forever + ike = aes128gcm16-prfsha256-ecp256,aes256gcm16-prfsha384-ecp384! + esp = aes128gcm16-ecp256,aes256gcm16-ecp384! +{% if 'NATed' not in group_names %} + mobike = no +{% endif %} +{% if 'DynDNS' in group_names %} + leftallowany = yes +{% endif %} + leftauth = pubkey + left = %defaultroute + leftsubnet = {{ ipsec[inventory_hostname_short] | ipv4 }}/32 + leftcert = {{ inventory_hostname_short }}.pem + leftfirewall = yes + lefthostaccess = yes + rightauth = pubkey + auto = route + dpdaction = hold + inactivity = 30m + modeconfig = push + +{% for host in groups.all | difference([inventory_hostname]) | sort %} + +conn {{ hostvars[host].inventory_hostname_short }} + right = {{ hostvars[host].inventory_hostname }} +{% if 'DynDNS' in hostvars[host].group_names %} + rightallowany = yes +{% endif %} + rightcert = {{ hostvars[host].inventory_hostname_short }}.pem + rightsubnet = {{ ipsec[ hostvars[host].inventory_hostname_short ] | ipv4 }}/32 +{% if 'NATed' not in group_names and 'NATed' in hostvars[host].group_names %} + mobike = yes +{% endif %} + +{%- endfor %} diff --git a/roles/common/templates/etc/ipsec.secrets.j2 b/roles/common/templates/etc/ipsec.secrets.j2 new file mode 100644 index 0000000..6ed670d --- /dev/null +++ b/roles/common/templates/etc/ipsec.secrets.j2 @@ -0,0 +1,5 @@ +# {{ ansible_managed }} +# Do NOT edit this file directly! + +# Our VPN uses RSA only. +: RSA {{ inventory_hostname_short }}.key diff --git a/roles/common/templates/etc/iptables/services.j2 b/roles/common/templates/etc/iptables/services.j2 index 303fa06..6bd2533 100644 --- a/roles/common/templates/etc/iptables/services.j2 +++ b/roles/common/templates/etc/iptables/services.j2 @@ -4,6 +4,13 @@ # direction protocol destination port source port # (in|out|inout)[46]? (tcp|udp|..) (port|port:port|port,port) (port|port:port|port,port) +{% if groups.all | length > 1 %} +inout4 udp 500 500 # ISAKMP +{% if groups.NATed | length > 0 %} +inout4 udp 4500 4500 # IPSec NAT Traversal +{% endif %} +{% endif %} + out tcp 80,443 # HTTP/HTTPS out tcp 9418 # GIT out udp 53 # DNS diff --git a/roles/common/templates/etc/network/if-up.d/ipsec.j2 b/roles/common/templates/etc/network/if-up.d/ipsec.j2 new file mode 100755 index 0000000..7dd41d4 --- /dev/null +++ b/roles/common/templates/etc/network/if-up.d/ipsec.j2 @@ -0,0 +1,47 @@ +#!/bin/sh + +# A post-up/down hook to automatically create/delete a virtual subnet +# for IPSec (inet4 only). +# Copyright © 2016 Guilhem Moulin <guilhem@fripost.org> +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +set -ue +PATH=/usr/sbin:/usr/bin:/sbin:/bin + +# Ignore the loopback interface and non inet4 families. +[ "$IFACE" != lo -a "$ADDRFAM" = inet ] || exit 0 + +# Only the device with the default, globally-scoped route, is of +# interest here. +ip="$( ip -4 -o route show to default scope global \ + | sed -nr '/^default via (\S+) dev (\S+).*/ {s//\2 \1/p;q}' )" +[ "${ip% *}" = "$IFACE" ] || exit 0 +ip="${ip##* }" + +vip="{{ ipsec[inventory_hostname_short] }}" +vsubnet="{{ ipsec_subnet }}" + +case "$MODE" in + start) ip address add "$vip/32" dev "$IFACE" scope global || true + # Nullroute the subnet used for IPSec to avoid data leaks + # in the absence of xfrm lookup (i.e., when there is no + # matching IPSec Security Association). + ip route replace prohibit "$vsubnet" proto static || true + ip route replace table 220 to "$vsubnet" via "$ip" dev "$IFACE" proto static src "$vip" || true + ;; + stop) ip route del table 220 to "$vsubnet" via "$ip" dev "$IFACE" proto static src "$vip" || true + ip route del prohibit "$vsubnet" proto static || true + ip address del "$vip/32" dev "$IFACE" scope global || true +esac |