Network connection troubles from a few external host to box with current RELENG_7

[Tom Evans]

On Thu, 2007-10-25 at 12:38 +0200, Mathias Picker wrote:
> I have upgraded a server from 6-stable to RELENG_7 a few weeks ago. Everything seemed to run fine, only one friend of mine couldn't connect to it with his OS X pc (no ssh, no http, ping works, though) (other machines (windows) from inside his net could connect ok).
> 
> No I have a small registration application up:
> http://strongdesk.com/oracle/recruitmentday/register/ and have people call oracle support that they cannot see that site. One oracle employee with an windows xp box cannot connect, too.
> 
> I have allready undone any performance / hardening sysctl settings, still, some people cannot connect...
> 
> Has anyone heard of this? Or is it just this machine?
> 
> (nmap does not guess the os, is that normal for 7.0?)
> 
> Any help (and debugging tips other than comparing packet dumps...)
> apreciated.
> 
> Thanks, Mathias
> 
> P.S.:uname and ifconfig
> 
> 1% uname -a
> FreeBSD 1.strongdesk.com 7.0-BETA1 FreeBSD 7.0-BETA1 #3: Wed Oct 24
> 17:59:25 CEST 2007
> hermannf at 1.strongdesk.com:/usr/obj/usr/src/sys/STRONGDESK  i386
> 
> 1% ifconfig vr0
> vr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
> 1500
>         options=8<VLAN_MTU>
>         ether 00:11:09:7c:b5:0f
>         inet 213.239.214.227 netmask 0xffffffe0 broadcast
> 213.239.214.255
>         maclabel biba/equal(equal-equal),mls/equal(equal-equal)
>         media: Ethernet autoselect (100baseTX <full-duplex>)
>         status: active
> 

Perhaps related:
http://lists.freebsd.org/pipermail/freebsd-net/2007-October/015712.html

Tom
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