I am on Ubuntu 20.04 and I have enable UFW as a killswitch to work with my wireguard vpn. My current rules work perfectly, except that traffic between my ubuntu host and my debian 10.5 virtualbox guest is blocked.
How can I unblock host / guest traffic?
My current UFW Rules are:
[ 1] 22/tcp ALLOW IN Anywhere
[ 2] Anywhere ALLOW OUT Anywhere on wg-client1 (out)
[ 3] 80/tcp ALLOW IN Anywhere
[ 4] 443/tcp ALLOW IN Anywhere
[ 5] Anywhere on wg-client1 ALLOW IN Anywhere
[ 6] 94.121.83.88 ALLOW OUT Anywhere (out)
[ 7] 21/tcp ALLOW IN Anywhere
[ 8] 53 ALLOW OUT Anywhere (out)
[ 9] 9418/tcp ALLOW IN Anywhere
I previously tried the following that all failed (i.e. when I ping guest ip192.168.0.84, I get ping: sendmsg: Operation not permitted)
[10] 22/tcp ALLOW IN 10.10.10.2
[11] 22/tcp ALLOW IN 192.168.0.0/24
[12] Anywhere ALLOW IN 192.168.0.0/24
[13] 192.168.0.0/24 ALLOW IN Anywhere
[14] 192.168.0.0/24 22 ALLOW IN Anywhere
[15] Anywhere ALLOW IN 192.168.0.0/24 22
I also use masquerade to put all traffic through the vpn. My ifconfig -a output is:
enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.18 netmask 255.255.255.0 broadcast 192.168.0.255
ether b4:a9:fc:b0:b0:d1 txqueuelen 1000 (Ethernet)
RX packets 668474 bytes 477052588 (477.0 MB)
RX errors 0 dropped 1 overruns 0 frame 0
TX packets 945227 bytes 553827446 (553.8 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 1000 (Local Loopback)
RX packets 2106 bytes 198789 (198.7 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2106 bytes 198789 (198.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vboxnet0: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether 0a:00:27:00:00:00 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vboxnet1: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether 0a:00:27:00:00:01 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wg-client1: flags=209<UP,POINTOPOINT,RUNNING,NOARP> mtu 1420
inet 10.10.10.2 netmask 255.255.255.255 destination 10.10.10.2
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC)
RX packets 565766 bytes 350115976 (350.1 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 451704 bytes 440547648 (440.5 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlp0s10f2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.6 netmask 255.255.255.0 broadcast 192.168.0.255
ether 34:cf:f6:61:c0:38 txqueuelen 1000 (Ethernet)
RX packets 433847 bytes 102427035 (102.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 94319 bytes 29872001 (29.8 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
It should be noted that my debian guest has two network interfaces, 1 static 192.168.0.84 and one dynamic so that I can use multiple wifi networks.
# The primary network interface
auto enp0s3
iface enp0s3 inet static
address 192.168.0.84
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.0.255
#dynamic gateway for Internet access on random networks
auto enp0s8
iface enp0s8 inet dhcp
thx
UPDATE
I finally figured out my sys logs and I noticed this:
[UFW BLOCK] IN= OUT=wlp0s10f2 SRC=192.168.0.255 DST=192.168.0.84 ....
So of course, I checked the vbox manager and for my bridged connection adapters, I only have 2 options: wlp0s10f2 or enp3s0 (ethernet)
Even though ifocnfig -a shows wg-client1 as network interface, I don't have wg-client1 as an available interface in virtualbox.
I played with different rules to allow 22/tcp from wlp0s10f2 on wg-client1, but haven't been successful.
Any tips?
