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03-23-2000 08:03 AM
03-23-2000 08:03 AM
Sequential port
Hello-
I'm trying to secure my HP-UX environment and I ran a scanner (Cybercop) on my
machine that told me that my server spawns it's listening ports in sequential
order. Is there any way that I can fix this? I'd appreciate any help?
Thank you,
Christine
I'm trying to secure my HP-UX environment and I ran a scanner (Cybercop) on my
machine that told me that my server spawns it's listening ports in sequential
order. Is there any way that I can fix this? I'd appreciate any help?
Thank you,
Christine
1 REPLY 1
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03-23-2000 08:27 AM
03-23-2000 08:27 AM
Re: Sequential port
You can use nettune on HPUX 10.20 to change the tcp_random_seq. The default is
0.
mowgli $ nettune -h tcp_random_seq
tcp_random_seq:
When set to one (1), TCP randomizes initial connection sequence numbers. When
set to two (2), a more sophisticated randomizer is used. When set to zero (0),
normal time-based, linearly increasing sequence numbers are used as described
in RFC 793. The default is disabled (0).
0.
mowgli $ nettune -h tcp_random_seq
tcp_random_seq:
When set to one (1), TCP randomizes initial connection sequence numbers. When
set to two (2), a more sophisticated randomizer is used. When set to zero (0),
normal time-based, linearly increasing sequence numbers are used as described
in RFC 793. The default is disabled (0).
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