Mailing List Archive

how is the IP ID field of recent linux-2.6
Hi there.

I was trying to remmember how is the IP ID field set on linux machines...
I remmembered doing some nmaps to my boxes, and IP ID was allways zero...

can anyone confirm this?
is IP ID on recent linux-2.6 allways zero?

greets to all,


--
Miguel Sousa Filipe


--
Miguel Sousa Filipe

--
gentoo-security@gentoo.org mailing list
Re: how is the IP ID field of recent linux-2.6 [ In reply to ]
> Hi there.
>
> I was trying to remmember how is the IP ID field set on linux machines...
> I remmembered doing some nmaps to my boxes, and IP ID was allways zero...
>
> can anyone confirm this?
> is IP ID on recent linux-2.6 allways zero?
>

A scan of localhost on one of my boxes using 2.6.10 (with no active packet
filtering) reveals:

Running: Linux 2.4.X|2.5.X|2.6.X
OS details: Linux 2.5.25 - 2.6.3 or Gentoo 1.2 Linux 2.4.19 rc1-rc7)
Uptime 3.573 days (since Mon Jan 3 04:41:25 2005)
TCP Sequence Prediction: Class=random positive increments
Difficulty=1061991 (Good luck!)
IPID Sequence Generation: All zeros

HTH,

--Kerin Francis Millar


--
gentoo-security@gentoo.org mailing list