[Cerowrt-devel] vpn fw question

[Dave Taht]

On Thu, Oct 2, 2014 at 6:32 PM, Eric S. Johansson <esj at eggo.org> wrote:
> I was trying to setup my cerowrt box as an openvpn client. everything seems
> to be working. The VPN link comes up, tun0 is created. I can access machines
> on the far end of the link from the AP and vice versa. the openwrt
> incantation for the vpn says to create an interface called vpn0
>
> network.vpn0=interface
> network.vpn0.proto=none
> network.vpn0.ifname=tun0

You just add the appropriate commands to /etc/config/openvpn,
or so I thought.

>
> ifconfig says  tun0 exists  but no vpn0. fw3 reload says:
>
> Warning: Section @zone[1] (lan) cannot resolve device of network 'lan'
> Warning: Section @zone[2] (guest) cannot resolve device of network 'guest'

Not a problem, I think.

> sometimes it says: Warning: Section @zone[1] (lan) cannot resolve device of
> network 'vpn0'
>
> tcpdump sees the ICMP request at se00 and tun0 but not at the remote target.
> this leads me to believe that it's probably a firewall problem but I don't
> know where the logs are.

logread.

> This brings me to one of the problem with had making changes in cerowrt,
> namely, how the $##$& do you debug this thing? I've had to reflash this box
> way too many times because I did something that effectively bricked it.
> right now, I would settle for knowing where to find where logs are put.

logread
dmesg

They are not written to flash or ram by default so as to never run you out
of either.

>
> thanks
> --- eric
>
>
>
>
>
>
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-- 
Dave Täht

https://www.bufferbloat.net/projects/make-wifi-fast