AllowedIPs

Aaron Bolton aaron at bukn.net
Sun Aug 30 21:52:36 CEST 2020


Funny you suggest that :) I just found that option a couple of hours ago 

-----Original Message-----
From: WireGuard <wireguard-bounces at lists.zx2c4.com> On Behalf Of Eddie
Sent: 30 August 2020 20:09
Cc: wireguard at lists.zx2c4.com
Subject: Re: AllowedIPs

Wouldn't using Table = off do everything you need, without touching the routing.

Cheers.

On 8/30/2020 1:56 AM, Aaron Bolton wrote:
> Yes, this does thanks
>
> I plan on using Quagga for BGP over WireGuard tunnels so I guess I 
> need to avoid wg-quick if that makes changes to the routing table and 
> firewall as I want to manage those my self
>
>> On 30 Aug 2020, at 00:16, Eric Light <eric at ericlight.com> wrote:
>>
>> I believe it's both, in a way.
>>
>> As far as wg is concerned, the AllowedIPs is effectively an ACL.  Any 
>> traffic hitting your wireguard interface from an IP not within the 
>> AllowedIPs will either be dropped on decryption, or won't even be 
>> decrypted.  (It's one of these, but I can't remember which)
>>
>> On top of that, wg-quick interprets the AllowedIPs string and does other things, such as adding appropriate network routing (the second part of your guess), as well as modifying any client firewall rules to permit the traffic.
>>
>> Hope this helps  :)
>>
>> E
>>
>> --------------------------------------------
>> Q: Why is this email five sentences or less?
>> A: http://five.sentenc.es
>>
>>> On Sun, 30 Aug 2020, at 04:07, Aaron Bolton wrote:
>>> I’m trying to understand AllowedIPs better is it effectively a ACL 
>>> that day what is allowed down the tunnel or is it mechanism to 
>>> configure what addresses get routed down the tunnel?
>>>
>>> Thanks in advance
>>>




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