Randomization of TCP sequence - HPUX 11.23

[Keith_105]

I know that "random TCP sequence" is turned on by default on HPUX 11i, however, I would need to know if "random tcp sequence" is turned on by default on HPUX 11.23 as well?

Or is there any network or Kernel parameters on HPUX 11.23 I can check with?

Please help, and thanks in advance.

[Steven E. Protter]

Shalom,

ndd will diplay network configuration. Default is stored in /etc/rc.config.d/nddconf

kctune is used to display and modify kernel parameters. sam has an easier to user interface for this.

SEP

[Keith_105]

Thank you for your advice.

On the HPUX 11.23 box, I have been going through the ndd supported parameters and Kernel parameters (using SAM), however, I could not find any particular parameter related to "Random TCP Sequence", do you know which parameter I should be looking for?

Thank you.

[VK2COT]

Hello,

Have you checked:

ndd -get /dev/tcp tcp_isn_passphrase

That is the parameter you want.

Cheers,

VK2COT