Routing only to latest peer in the config list seems to work

[Steven Honson]

Hi Danny,

Have you also changed the mask for each of the peers on your central node to /32? If not you’ll need to do this, as leaving them as /24 still effectively makes them all the same route. Ie 192.168.50.1/24 and 192.168.50.2/24 are both the same still. The “AllowedIPs" on the central node to be 192.168.50.1/32, 192.168.50.2/32 etc in your example.

You can leave the “Address” IPs with a /24 mask.

Are you able to share an updated copy of your configs?

Cheers,
Steven

> On 8 Sep 2018, at 6:36 pm, danny.korpan at mailbox.org wrote:
> 
> Hi,
>  
> I’ve changed the AllowedIPs so that everyone has it’s own dedicated IP. Still the same problem. No routing.
>  
> Kind Regards,
> Danny
>  
> Von: Ryan Whelan <rcwhelan at gmail.com> 
> Gesendet: Donnerstag, 6. September 2018 19:14
> An: danny.korpan at mailbox.org
> Cc: WireGuard mailing list <wireguard at lists.zx2c4.com>
> Betreff: Re: Routing only to latest peer in the config list seems to work
>  
> You're using the same AllowedIPs for multiple peers.
>  
> On Thu, Sep 6, 2018 at 12:15 PM <danny.korpan at mailbox.org <mailto:danny.korpan at mailbox.org>> wrote:
> Hi,
> 
> I have the problem with my wireguard server, that only the latest user
> "peer" from the server config can route/ping to the internal wireguard
> server IP or the clients in the network behind the wireguard server upon
> successful connection. All peers can connect to the server, but only the
> latest in the list last can ping other servers.
> I can't locate the error in the configs... does anybody have an idea?
> 
> My wireguard server and client version is using 0.0.20180809-wg1~xenial with
> Ubuntu 18.04.1
> 
> wg0.conf
> [Interface]
> Address = 192.168.50.1/24 <http://192.168.50.1/24>
> PostUp = iptables -A FORWARD -i wg0 -j ACCEPT; iptables -t nat -A
> POSTROUTING -o eth0 -j MASQUERADE
> PostDown = iptables -D FORWARD -i wg0 -j ACCEPT; iptables -t nat -D
> POSTROUTING -o eth0 -j MASQUERADE
> ListenPort = 51820
> PrivateKey = XXX
> 
> [Peer]
> #User 1
> PublicKey = XXX
> PresharedKey = XXX
> AllowedIPs = 192.168.50.0/24 <http://192.168.50.0/24>
> 
> [Peer]
> #User 2
> PublicKey = XXX
> PresharedKey = XXX
> #AllowedIPs = 192.168.50.0/24 <http://192.168.50.0/24>
> 
> [Peer]
> #User 3
> PublicKey = XXX
> PresharedKey = XXX
> AllowedIPs = 192.168.50.0/24 <http://192.168.50.0/24>
> 
> [Peer]
> #User 4
> PublicKey = XXX
> PresharedKey = XXX
> AllowedIPs = 192.168.50.0/24 <http://192.168.50.0/24>
> 
> 
> 
> client.config
> [Interface]
> PrivateKey = XXX
> DNS = 192.168.178.1
> Address = 192.168.50.2/24 <http://192.168.50.2/24>
> 
> [Peer]
> PublicKey = XXX
> PresharedKey = XXX
> AllowedIPs = 192.168.50.0/24 <http://192.168.50.0/24>, 190.168.178.0/24 <http://190.168.178.0/24>
> Endpoint = my.remote.server:51820
> PersistentKeepalive = 25
> 
> My sysctl.conf includes
> net.ipv4.conf.all.proxy_arp = 1
> net.ipv4.ip_forward = 1
> 
> Does anybody have an idea?
> 
> 
> Kind Regards,
> Danny
> 
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