Re: [gentoo-user] Configuring hostapd

[Fernando Rodriguez]

On Sunday, August 02, 2015 1:29:50 PM Mick wrote:
> On Sunday 02 Aug 2015 01:50:21 Fernando Rodriguez wrote:
> > Hello,
> >
> > After installing hostapd I can successfully connect to the AP, I can get
> > DHCP from it, but I cannot access the network through it (neither lan or
> > internet).
>
> This sounds like a (network) routing problem, rather than a hostapd issue.

It looks like that, but if I stop iptables completely on the router all 
unicast traffic still works in the lan (both wired and through an external AP), 
so if I connect to the hostapd AP with iptables off, shouldn't I at the very 
least be able to ping the wireless interface on the router?

I also tried with only the following rule which enables internet access to all 
wired workstations and through external AP:

iptables -t nat -A POSTROUTING -o enp0s8 -j MASQUERADE


> > This is an existing router box so iptables and everything else
> > is already properly configured.
> >
> > I'm using this minimal config:
> >
> > interface=wlp0s10
> > #driver=nl80211
> > hw_mode=g
> > channel=6
> > #ieee80211d=1
> > #country_code=FR
> > #ieee80211n=1
> > #wmm_enabled=1
> >
> > ssid=LinuxAP
> > auth_algs=1
> > wpa=2
> > wpa_key_mgmt=WPA-PSK
> > rsn_pairwise=CCMP
> > wpa_passphrase=hello linux ap
> >
> > iw list shows the following supported modes:
> > * IBSS
> > * managed
> > * AP
> > * AP/VLAN
> > * monitor
> >
> > The ebuild warns that in order for hostapd to work I need to set the card
> > in master mode (the wiki makes no mention of it).
>
> I think this is a matter of nomenclature.  Your AP & AP/VLAN would/should be
> the equivalent to master mode.
>
>
> > But when I try to do
> > that (either through the net init scripts or through iwconfig) I get the
> > following error:
> >
> > Error for wireless request "Set Mode" (8B06) :
> >     SET failed on device wlp0s10 ; Invalid argument.
>
> Did you try setting it up as AP, or AP/VLAN to see if it works?  In the
latter 
> you will also need to setting a route for the AP VLAN to access the default
> (V)LAN and Internet.

I did, same error. But I found that this is an issue with mac80211 based 
drivers, they can only be set to master mode through the nl80211 interface 
which is what hostapd uses. So from what I understand, as long as iw list 
shows AP mode I'm good and the ebuild warning is outdated. I believe you just 
net to enable the netlink use flag (which I did) for it to work.

http://linuxwireless.org/en/users/Documentation/hostapd/

Thanks,

-- 
Fernando Rodriguez