Vagrant forward a range of ports

Question

Is there a way to forward a range of ports using vagrant 1.2.1 or higher? I know that you can forward any number of ports individually by using

config.vm.forward_port 80, 4567

Or, is the answer simply don't use vagrant to do such a thing?

Does this help? http://docs.vagrantup.com/v2/networking/forwarded_ports.html — dawud, Jun 29 '13 at 10:44
Not exactly. Wanted to know if you can specify a range of ports to be open, rather than one at a time. Perhaps I'll contact the author directly. — Acorn, Jun 30 '13 at 12:19
Since the Vagrantfile is just a Ruby script you might be able to write a for loop that executes config.vm.forward_port for every port you want. I'm not fluent in Ruby, so I can't really help you with code. — Lasar, Jul 08 '13 at 12:27

score 30 · Accepted Answer · answered Mar 13 '14 at 14:47

30

If anyone needs an example of how to do the loop in your Vagrantfile here it is:

for i in 64000..65535
    config.vm.network :forwarded_port, guest: i, host: i
end

The above loop will forward all ports between 64000 and 65535 to the exact same port on the guest (note that 64000 and 65535 are inclusive).

answered Mar 13 '14 at 14:47

ddelrio1986

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On my computer vagrant was a bit long to map 1000 ports. Unless you really need so many mapped ports, you should map 50 ports. – Antoine Aug 26 '15 at 12:17
@Antoine yes I've noticed that it is very slow as well. I normally end up just using 10 to 20 for development boxes. – ddelrio1986 Sep 17 '15 at 02:17
Extremely slow to check used ports on windows, errors out once the command line limitation kicks in. – Alexander T Mar 02 '18 at 11:25
@AlexanderT how many ports are you trying to forward? – ddelrio1986 Mar 02 '18 at 16:13
@ddelrio1986 around a thousand. – Alexander T Mar 03 '18 at 13:28
@AlexanderT ready my comment above. You would normally want to only forward 10 or so on a development box due to how slow it is to setup a port forward with Vagrant. – ddelrio1986 Mar 06 '18 at 15:18
@ddelrio1986 yeah, well it works fine on Linux. I don't think this is an unsolvable problem, just that Vagrant haven't solved it yet. – Alexander T Mar 06 '18 at 16:53

score 2 · Answer 2 · answered Jan 23 '15 at 16:01

The 'for' examples above are correct for doing an inclusive range. If you would like to forward a set of specific ports, you need to use the Ruby .each operator.

The variables can go inside or outside of the main Vagrant.configure loop.

UDP_PORTS_LIST={
  "5000" => 5000, # Some service
}

TCP_PORTS_LIST={
  "5900" => 5900, # VNC
}

The loops need to go inside the Vagrant.configure block for the VM you want to map them for (remember you can have multiple VMs in a single Vagrantfile).

UDP_PORTS_LIST.each do |guest, host|
  config.vm.network "forwarded_port", guest: "#{guest}", host: "#{host}", protocol: "udp"
end
TCP_PORTS_LIST.each do |guest, host|
  config.vm.network "forwarded_port", guest: "#{guest}", host: "#{host}", protocol: "tcp"
end

Vagrant forward a range of ports

2 Answers2