Solved

Fragment offset

Posted on 2010-11-30
1
671 Views
Last Modified: 2013-11-29
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
0
Comment
Question by:progjm
1 Comment
 
LVL 33

Accepted Solution

by:
Dave Howe earned 500 total points
ID: 34244359
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.
0

Featured Post

VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Data breaches are on the rise, and companies are preparing by boosting their cybersecurity budgets. According to the Cybersecurity Market Report (http://www.cybersecurityventures.com/cybersecurity-market-report), worldwide spending on cybersecurity …
It’s the first day of March, the weather is starting to warm up and the excitement of the upcoming St. Patrick’s Day holiday can be felt throughout the world.
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, just open a new email message. In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

765 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question