Subj : FreeBSD 4.3-RC buffer issue
To   : Brad Laue
From : Tobias Ernst
Date : Sun Apr 15 2001 12:47 pm

Hallo Brad!

 TE>> I am not sure at all what this error means, I am not an 
 TE>> experienced nmap user. This error seems to continue ad 
 TE>> inifinitum with increasing sleep intervals.

 BL> That's precisely the error I get - interesting that it's 

Hmm, you spoke of buffer underruns, while I saw "permission denied" !?!?

 BL> not limited to the last few cvsups. Is that FreeBSD 4.1.x? 

No. As I mentioned it is a 4.3-BETA cvsupped on March 13.

 BL> One curiosity is, you're able to scan using the PPPoE 
 BL> interface, and not the LAN, while the
 BL> reverse is true in my case. I wonder if it has to do with 
 BL> the existence of multiple network cards, or multiple types of them?

Could be. I have a total of three cards in here, here is what my ifconfig -a 
says in the order in which it says it:

fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255
        inet 192.168.1.254 netmask 0xffffff00 broadcast 192.168.1.255
        ether 00:90:27:2d:96:6f 
        media: autoselect (100baseTX <full-duplex>) status: active
        supported media: autoselect 100baseTX <full-duplex> 100baseTX 
10baseT/UTP <full-duplex> 10baseT/UTP

(^^^ This is the device with which I get the permission denied type errors)

lnc0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 192.168.3.1 netmask 0xffffff00 broadcast 192.168.3.255
        ether 00:00:21:62:91:94 

(^^^  I currently have no computers on this subnet, but I could test it within 
two or three days)

lp0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500

(^^^ Not used by me, I should remove this from the kernel config ...)

ed0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        ether 00:00:b4:3f:3e:7f 

(^^^  This NIC is only used for PPPOE, not for "normal" TCP/IP. It is the 
device tun0 binds to via ppp.)

ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
isp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
isp1: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
isp2: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
isp3: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
ipr0: flags=2810<POINTOPOINT,SIMPLEX,LINK1> mtu 1500
ipr1: flags=2810<POINTOPOINT,SIMPLEX,LINK1> mtu 1500
ipr2: flags=2810<POINTOPOINT,SIMPLEX,LINK1> mtu 1500
ipr3: flags=2810<POINTOPOINT,SIMPLEX,LINK1> mtu 1500

(^^^  Hevanes, I should finally remove the sppp and i4b stuff from my config. I 
have not even a ISDN card left in this machine ...)

lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
        inet 127.0.0.1 netmask 0xff000000 
tun0: flags=8151<UP,POINTOPOINT,RUNNING,PROMISC,MULTICAST> mtu 1492
        inet 217.80.51.112 --> 62.225.245.157 netmask 0xffffff00 
        Opened by PID 97730

(^^^ those two are obvious)

Viele Gr��e,
Tobias

--- Msged/LNX TE 06 (pre)
 * Origin: Running Redhat Linux (2:2476/418)

.