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Docker

193 bytes added, 23:10, 22 June 2018

→‎IPtables modifications

:[[File:ClipCapIt-180623-010335.PNG|800px]]

 <pre>-A POSTROUTING -s 192.168.123.0/24 -d 224.0.0.0/24 -j RETURN-A POSTROUTING -s 192.168.123.0/24 -d 255.255.255.255/32 -j RETURN-A POSTROUTING -s 192.168.123.0/24 ! -d 192.168.123.0/24 -p tcp -j MASQUERADE --DNS and DCHP packages from the Virtual Bridges are allowed to-ports 1024-65535-A POSTROUTING -s 192.168.123.0/24 ! -d 192.168.123.0/24 -p udp -j MASQUERADE --be sent to-ports 1024-65535-A POSTROUTING -s 192.168.123.0/24 ! -d 192.168.123the host machine.0/24 -j MASQUERADE</pre> 

<pre>

-A INPUT -i virbr1 -p udp -m udp --dport 53 -j ACCEPT

</pre>

The host machine is allowed to send DHCP packages to the virtual bridges in order to configure them.

<pre>

-A OUTPUT -o virbr1 -p udp -m udp --dport 68 -j ACCEPT

-A FORWARD -o virbrDocker -j REJECT --reject-with icmp-port-unreachable

-A FORWARD -i virbrDocker -j REJECT --reject-with icmp-port-unreachable

</pre>

 

<pre>

-A POSTROUTING -s 192.168.123.0/24 -d 224.0.0.0/24 -j RETURN

-A POSTROUTING -s 192.168.123.0/24 -d 255.255.255.255/32 -j RETURN

-A POSTROUTING -s 192.168.123.0/24 ! -d 192.168.123.0/24 -p tcp -j MASQUERADE --to-ports 1024-65535

-A POSTROUTING -s 192.168.123.0/24 ! -d 192.168.123.0/24 -p udp -j MASQUERADE --to-ports 1024-65535

-A POSTROUTING -s 192.168.123.0/24 ! -d 192.168.123.0/24 -j MASQUERADE

</pre>

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Adam

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