Re: nmap v6.00 - problems if a wlan interface is installed/activated

[Daniel Miller <bonsaiviking () gmail com>]

Confirmed, I just updated to a 3.0 kernel (3.2.0-24), and this problem
presents on an old svn build of 5.61test5 with wlan0 in monitor mode:

$ nmap --iflist -ddd

Starting Nmap 5.61TEST5 ( http://nmap.org ) at 2012-05-26 19:37 CDT
Fetchfile found /usr/local/bin/../share/nmap/nmap-services
PORTS: Using top 1000 ports found open (TCP:1000, UDP:0, SCTP:0)
INTERFACES: NONE FOUND(!)
Reason: getinterfaces_dnet: intf_loop() failed
ROUTES: NONE FOUND(!)
Reason: getsysroutes_dnet: sysroutes_dnet_find_interfaces() failed


If needed, I can do a debug build and step through this, but I'd
rather not, if someone can identify the issue first.

Dan

On Sat, May 26, 2012 at 6:41 AM, Tom Eichstaedt <wintermute () tom-e de> wrote:
> Hi all,
>
>
> nmap v6.00 has problems if a wlan interface is installed/activated.
> OS: GNU/Linux 3.0
>
>
> My findings (nmap 5.51 vs nmap 6.00):
>
> =======================================================================
>
> (1) nmap 5.51 with deactivated wlan interface (--iflist):
>
> Starting Nmap 5.51 ( http://nmap.org ) at 2012-05-24 12:59 CEST
> ************************INTERFACES************************
> DEV   (SHORT) IP/MASK          TYPE        UP MTU   MAC
> lo    (lo)    127.0.0.1/8      loopback    up 16436
> lan-1 (lan-1) 10.100.0.10/24   ethernet    up 1500  00:30:18:4B:9E:CD
> wan-1 (wan-1) 192.168.2.1/24   ethernet    up 1500  00:30:18:4B:9E:CC
> ppp0  (ppp0)  xxx.xxx.xxx.xxx/32 point2point up 1492
>
> **************************ROUTES**************************
> DST/MASK         DEV   GATEWAY
> 217.0.118.108/32 ppp0
> 10.100.0.0/24    lan-1
> 192.168.2.0/24   wan-1
> 0.0.0.0/0        ppp0  xxx.xxx.xxx.xxx
>
> =======================================================================
>
> (2) nmap 6.00 with deactivated wlan interface (--iflist):
>
> Starting Nmap 6.00 ( http://nmap.org ) at 2012-05-24 13:10 CEST
> ************************INTERFACES************************
> DEV      (SHORT)    IP/MASK          TYPE        UP   MTU   MAC
> lo       (lo)       127.0.0.1/8      loopback    up   16436
> lan-1    (lan-1)    10.100.0.10/24   ethernet    up   1500 00:30:18:4B:9E:CD
> wan-1    (wan-1)    192.168.2.1/24   ethernet    up   1500 00:30:18:4B:9E:CC
> unused-1 (unused-1) (null)/0         ethernet    down 1500 00:30:18:4B:9E:CB
> unused-2 (unused-2) (null)/0         ethernet    down 1500 00:30:18:4B:9E:CA
> wlan-1   (wlan-1)   (null)/0         ethernet    down 1500 00:1D:0F:FE:BF:C4
> ppp0     (ppp0)     91.57.179.165/32 point2point up   1492
>
> ROUTES: NONE FOUND(!)
>
> =======================================================================
>
> (3) nmap 5.51 with activated wlan interface in master mode (--iflist):
>
> Starting Nmap 5.51 ( http://nmap.org ) at 2012-05-24 13:06 CEST
> ************************INTERFACES************************
> DEV    (SHORT)  IP/MASK          TYPE        UP MTU   MAC
> lo     (lo)     127.0.0.1/8      loopback    up 16436
> lan-1  (lan-1)  10.100.0.10/24   ethernet    up 1500  00:30:18:4B:9E:CD
> wan-1  (wan-1)  192.168.2.1/24   ethernet    up 1500  00:30:18:4B:9E:CC
> wlan-1 (wlan-1) 10.100.1.10/24   ethernet    up 1500  00:1D:0F:FE:BF:C4
> ppp0   (ppp0)   xxx.xxx.xxx.xxx/32 point2point up 1492
>
> **************************ROUTES**************************
> DST/MASK         DEV    GATEWAY
> 217.0.118.108/32 ppp0
> 10.100.0.0/24    lan-1
> 10.100.1.0/24    wlan-1
> 192.168.2.0/24   wan-1
> 0.0.0.0/0        ppp0   xxx.xxx.xxx.xxx
>
> =========================================================================
>
> (4) nmap 6.00 with activated wlan interface in master mode (--iflist):
>
> Starting Nmap 6.00 ( http://nmap.org ) at 2012-05-24 13:09 CEST
> INTERFACES: NONE FOUND(!)
> ROUTES: NONE FOUND(!)
>
> =========================================================================
>
>
> As you can see, nmap 5.51 works well in any case (1 and 3).
> In the second case (2) nmap 6.00 finds no routes (but works).
> In the last case (4) nmap 6.00 finds no routes and no interfaces.
>
> Other people with totally different hardware seem to have exactly
> the same problem: http://talk.maemo.org/archive/index.php/t-48673.html
>
> I hope my findings will help you to solve the problem.
> If you need further information, please let me know.
>
>
> Cheers, Tom
>
>
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