preventing OS fingerprint

2005-11-03 Thread Gustavo Rios
Dear gentleman, i have an obsd firewall and would like to prevent external entities discovering that firewall is openbsd, is that possible? Thanks a lot for your time and cooperation.

Re: preventing OS fingerprint

2005-11-03 Thread Hans van Leeuwen
Gustavo Rios wrote: Dear gentleman, i have an obsd firewall and would like to prevent external entities discovering that firewall is openbsd, is that possible? Thanks a lot for your time and cooperation. I use the following line in pf to prevent nmap scan, including -O: block in quick

Re: preventing OS fingerprint

2005-11-03 Thread Gustavo Rios
Right now, i am running into bussiness. I would like my client to get focused into the solution only. I don't want to give him a chance to compare my proposal to other. that's why. 2005/11/3, Hans van Leeuwen [EMAIL PROTECTED]: Gustavo Rios wrote: Dear gentleman, i have an obsd firewall

Re: preventing OS fingerprint

2005-11-03 Thread Joachim Schipper
On Thu, Nov 03, 2005 at 01:48:56PM -0200, Gustavo Rios wrote: Right now, i am running into bussiness. I would like my client to get focused into the solution only. I don't want to give him a chance to compare my proposal to other. that's why. Now *there*'s a noble goal... Anyway, you do

Re: preventing OS fingerprint

2005-11-03 Thread ober
Gustavo Rios wrote: Dear gentleman, i have an obsd firewall and would like to prevent external entities discovering that firewall is openbsd, is that possible? Thanks a lot for your time and cooperation. Or you can take the complicated approach and use the Wafter. A kernel module to do

[Straying OT] Re: preventing OS fingerprint

2005-11-03 Thread Nico Meijer
Hi Gustavo, Right now, i am running into bussiness. I would like my client to get focused into the solution only. I don't want to give him a chance to compare my proposal to other. In the years I have been in business myself, I have noticed that unless you are as open as you can be about what

Re: preventing OS fingerprint

2005-11-03 Thread Jasper Lievisse Adriaanse
On Thu, 03 Nov 2005 16:32:13 +0100 Hans van Leeuwen [EMAIL PROTECTED] wrote: Gustavo Rios wrote: Dear gentleman, i have an obsd firewall and would like to prevent external entities discovering that firewall is openbsd, is that possible? Thanks a lot for your time and cooperation.

Re: preventing OS fingerprint

2005-11-03 Thread Shane J Pearson
Hi Damien, On 04/11/2005, at 9:56 AM, Damien Miller wrote: why care? fingerprinting is such a non-issue, and spending effort to avoid it is just security through obscurity. Ignoring whether blocking NMAP scans is effective or not... I agree that it is not good to rely on obscurity. But I