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тАО12-22-2008 01:12 AM
тАО12-22-2008 01:12 AM
I want to set tcp_isn_passphrase parameter value to 0 for tcp.
I am using ndd -set /dev/tcp tcp_isn_passphrase 0
command to set it to 0.
But this value is not reflected in nddconf file.
When I manually chenged NDD_VALUE[5]=0,
and run following command
ndd -get /dev/tcp tcp_isn_passphrase
it give result 1.
i want to know , do i need to reboot the machine to get values reflected in nddconf file ,
or there is any other to achieve the same .
Thanks in advance .
Solved! Go to Solution.
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тАО12-22-2008 03:53 AM
тАО12-22-2008 03:53 AM
Solutionwhen you do ndd -set /dev/tcp tcp_isn_passphrase 0
it set a isn passphrase to the string "0".
Once enabled there is no way to disable tcp_isn_passphrase,
so when you do ndd -get /dev/tcp tcp_isn_passphrase
it answeres 1 which means that tcp_isn_passphrase had been set.
- it never shows the value for security considerations-
So even if you reboot , and with tcp_isn_passphrase set to 0 in nddconf,
ndd -get /dev/tcp tcp_isn_passphrase will always return 1
To disable tcp_isn_passphrase, you need to remove it from nddconf and reboot.
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тАО12-22-2008 04:02 AM
тАО12-22-2008 04:02 AM
Re: nddconf More random tcp sequence tcp_isn_passphrase
change the value manually in the nddconf file. Doing it on the fly as you did, does not change nddconf
Use the same format as other parameters.
Reboot is not required.
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тАО12-22-2008 10:47 PM
тАО12-22-2008 10:47 PM
Re: nddconf More random tcp sequence tcp_isn_passphrase
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тАО01-06-2009 10:17 AM
тАО01-06-2009 10:17 AM
Re: nddconf More random tcp sequence tcp_isn_passphrase
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тАО01-06-2009 09:34 PM
тАО01-06-2009 09:34 PM
Re: nddconf More random tcp sequence tcp_isn_passphrase
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тАО01-07-2009 12:46 AM
тАО01-07-2009 12:46 AM
Re: nddconf More random tcp sequence tcp_isn_passphrase
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тАО01-07-2009 01:10 AM
тАО01-07-2009 01:10 AM
Re: nddconf More random tcp sequence tcp_isn_passphrase
No no, I want to check if tcp_isn_passphrase is set or not.
I didn't know how to set and unset the value
tcp_isn_passphrase.
Actually , the result of
ndd -get /dev/tcp tcp_isn_passphrase is 1 thet means it is set to some value. Not necessary to ZERO 0.
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тАО01-07-2009 02:01 AM
тАО01-07-2009 02:01 AM
Re: nddconf More random tcp sequence tcp_isn_passphrase
ndd -get /dev/tcp tcp_isn_passphrase
1 -> means is set whatever value it is and
can't be reset
ndd -get /dev/tcp tcp_isn_passphrase
0 -> means is not set
as soon as a ndd -set /dev/tcp tcp_isn_passphrase anything
is made, it sets the passphrase to "anything"
and there is not way to reset it
so ndd -get /dev/tcp tcp_isn_passphrase will answer 1
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тАО01-07-2009 02:23 AM
тАО01-07-2009 02:23 AM