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Fragment offset

I am designing packets to test IDS rules, how does one go about setting an offset of 2 or some other random number? I am currently using sendip to accomplish this task, I am assuming it will be the same for all other packet crafting utilities?

Thanks
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progjm
Asked:
progjm
1 Solution
 
Dave HoweSoftware and Hardware EngineerCommented:
for fragments, its not the offset that counts (although NEGATIVE offsets can have significant benefits in rule penetration) but the final packet after reconstruction.

for tools like nemesis, you can usually supply the offset as a command line parameter, passing the actual payload as a file reference. that makes both trivially scriptable.
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