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Create a netgraph bridge for jails getting full access to NAT.

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This commit is contained in:
Tom Alexander 2022-10-31 21:28:35 -04:00
parent 55c36a2bd9
commit 7bfc817894
Signed by: talexander
GPG Key ID: D3A179C9A53C0EDE
3 changed files with 29 additions and 1 deletions
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2
ansible/roles/base/tasks/freebsd.yaml
View File

@ -79,7 +79,7 @@
- name: Delete rc.conf - name: Delete rc.conf
file: file:
path: /etc/rc.conf path: /etc/rc.conf
start: absent state: absent
when: rc_conf is not defined when: rc_conf is not defined
- name: Add fstab entries - name: Add fstab entries

4
ansible/roles/firewall/files/odofreebsd_pf.conf
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@ -1,5 +1,6 @@
ext_if = "{ igb0 igb1 ix0 ix1 wlan0 }" ext_if = "{ igb0 igb1 ix0 ix1 wlan0 }"
jail_net_v4 = "10.193.223.0/24" jail_net_v4 = "10.193.223.0/24"
full_nat_v4 = "10.213.177.0/24"
dhcp = "{ bootpc, bootps }" dhcp = "{ bootpc, bootps }"
# allow = "{ host_uplink0 }" # allow = "{ host_uplink0 }"
@ -14,8 +15,10 @@ set skip on lo
# redirections # redirections
nat on $ext_if inet from $jail_net_v4 to { any, !$jail_net_v4 } tag ALLOWED -> (wlan0) nat on $ext_if inet from $jail_net_v4 to { any, !$jail_net_v4 } tag ALLOWED -> (wlan0)
nat on $ext_if inet from $full_nat_v4 to { any, !$full_nat_v4 } tag ALLOWED -> (wlan0)
rdr on host_uplink0 inet proto {tcp, udp} from any to 10.193.223.1 port 53 tag ALLOWED -> 1.1.1.1 port 53 rdr on host_uplink0 inet proto {tcp, udp} from any to 10.193.223.1 port 53 tag ALLOWED -> 1.1.1.1 port 53
rdr on host_uplink1 inet proto {tcp, udp} from any to 10.213.177.1 port 53 tag ALLOWED -> 1.1.1.1 port 53
# filtering # filtering
block log all block log all
@ -38,3 +41,4 @@ pass in on $ext_if proto udp to any port $udp_pass_in
pass quick on $ext_if proto udp from any port $dhcp to any port $dhcp pass quick on $ext_if proto udp from any port $dhcp to any port $dhcp
pass in on host_uplink0 proto udp from any to any port { 53 51820 } pass in on host_uplink0 proto udp from any to any port { 53 51820 }
pass in on host_uplink1

24
ansible/roles/jail/files/setup_netgraph_odo
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@ -7,11 +7,15 @@ cleanup() {
ngctl shutdown wg_link2: ngctl shutdown wg_link2:
ngctl shutdown wg_uplink0: ngctl shutdown wg_uplink0:
ngctl shutdown wg_bridge0: ngctl shutdown wg_bridge0:
ngctl shutdown host_link3:
ngctl shutdown host_uplink1:
ngctl shutdown host_bridge1:
} }
setup_netgraph_start() { setup_netgraph_start() {
cleanup cleanup
# Create a bridge for jails that only speak wireguard
ngctl -d -f - <<EOF ngctl -d -f - <<EOF
mkpeer . eiface hook ether mkpeer . eiface hook ether
name .:hook host_uplink0 name .:hook host_uplink0
@ -48,6 +52,26 @@ EOF
ifconfig $(ngctl msg 'wg_uplink0:' getifname | grep Args | cut -d '"' -f 2) name wg_uplink0 10.241.199.1/24 up ifconfig $(ngctl msg 'wg_uplink0:' getifname | grep Args | cut -d '"' -f 2) name wg_uplink0 10.241.199.1/24 up
ifconfig $(ngctl msg 'wg_bridge0:link2' getifname | grep Args | cut -d '"' -f 2) name wg_link2 ifconfig $(ngctl msg 'wg_bridge0:link2' getifname | grep Args | cut -d '"' -f 2) name wg_link2
# Create a bridge for jails given full access to NAT
ngctl -d -f - <<EOF
mkpeer . eiface hook ether
name .:hook host_uplink1
EOF
ngctl -d -f - <<EOF
mkpeer host_uplink1: bridge ether link0
name host_uplink1:ether host_bridge1
EOF
ngctl -d -f - <<EOF
mkpeer host_bridge1: eiface link2 ether
name host_bridge1:link2 host_link3
EOF
ifconfig $(ngctl msg 'host_uplink1:' getifname | grep Args | cut -d '"' -f 2) name host_uplink1 10.213.177.1/24 up
ifconfig $(ngctl msg 'host_bridge1:link2' getifname | grep Args | cut -d '"' -f 2) name host_link3
} }
setup_netgraph_stop() { setup_netgraph_stop() {