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IP Header has a length of 24 bytes

By TimHg ·
Previous (unanswered) question has similar problem to me so I thought I'd repost (with higher points !!)-

IP Header has a length of 24 Bytes
a Cisco router sends an UDP request, the length of its IP-header is strictly 20 bytes, to a windows2000server.
Within the UDP answer,my windows2000 server sends an IP-header with a length of 24 bytes
because it adds 4 bytes for "options = no options" to the router.
therefor my firewall rejects this answer because of a security lack.
now my question:where / how can I configure the TCP/IP options in that way, that my header will not exceed a length of 20 bytes.

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IP Header has a length of 24 bytes

by IT_Instructor In reply to IP Header has a length of ...

Tim,

Have a look at this (rather lengthy)

http://support.microsoft.com/support/kb/articles/q224/8/29.asp?LN=EN-US&SD=gn&FR=0&qry=tcp%20options&rnk=6&src=DHCS_MSPSS_gn_SRCH&SPR=WIN2000

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IP Header has a length of 24 bytes

by Shanghai Sam In reply to IP Header has a length of ...

Poster rated this answer

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IP Header has a length of 24 bytes

by IT_Instructor In reply to IP Header has a length of ...

Tim,

Have a look at this (rather lengthy)

http://support.microsoft.com/support/kb/articles/q224/8/29.asp?LN=EN-US&SD=gn&FR=0&qry=tcp%20options&rnk=6&src=DHCS_MSPSS_gn_SRCH&SPR=WIN2000

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IP Header has a length of 24 bytes

by Shanghai Sam In reply to IP Header has a length of ...

Link didn't work

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IP Header has a length of 24 bytes

by jwilczyn In reply to IP Header has a length of ...

You may need to make changes to Cisco Internetwork Operating System (IOS). Please check MS-Q249067
http://support.microsoft.com/support/kb/articles/Q249/0/67.ASP
Check also MS-Q249125
http://support.microsoft.com/support/kb/articles/Q249/1/25.ASP
Good luck

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IP Header has a length of 24 bytes

by jwilczyn In reply to IP Header has a length of ...

How to Configure IPSec Tunneling in Windows 2000 MS-Q252735
http://support.microsoft.com/support/kb/articles/q252/7/35.asp?LN=EN-US&SD=gn&FR=0&qry=IP%20Header%20&rnk=31&src=DHCS_MSPSS_gn_SRCH&SPR=WIN2000
TCP/IP & NBT Configuration Parameters for Windows NT and Windows 2000 MS-Q120642
http://support.microsoft.com/support/kb/articles/q120/6/42.asp?LN=EN-US&SD=gn&FR=0&qry=IP%20Header%20&rnk=26&src=DHCS_MSPSS_gn_SRCH&SPR=WIN2000

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IP Header has a length of 24 bytes

by jwilczyn In reply to IP Header has a length of ...

It may help too: IPSec and L2TP Implementation in Windows 2000
http://support.microsoft.com/support/kb/articles/q265/1/12.asp?LN=EN-US&SD=gn&FR=0&qry=configure%20the%20TCP/IP%20options%20&rnk=13&src=DHCS_MSPSS_gn_SRCH&SPR=WIN2000

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IP Header has a length of 24 bytes

by Shanghai Sam In reply to IP Header has a length of ...

Poster rated this answer

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IP Header has a length of 24 bytes

by dmiles In reply to IP Header has a length of ...

You may find help from the following site:
Configuring IP Multicast Routing
http://www.cisco.com/univercd/cc/td/doc/product/software/ios113ed/113ed_cr/np1_c/1cmulti.htm

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IP Header has a length of 24 bytes

by Shanghai Sam In reply to IP Header has a length of ...

Link didn't work

A very short, simple answer telling how to turn off TCP option in NT 4 (or at least restrict to 20 bytes somehow)is what I need.

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