<div>
if you look <a href="http://en.wikipedia.org/wiki/User_Datagram_Protocol" rel="ugc">here</a> you will see that the 5th and sixth byte are the length. this is 0x0055 which in decimal is 85<br />
<br />
the double byte pairs are, in order:<br />
0x041A (source port) = 1050<br />
0x00A1 (dest port) = 161 (SNMP)<br />
0x0055 (length) 85<br />
oxDB51 (checksum) = 56145 (although this doesn't matter, and should be left in hex)
</div>


if you look here [http://en.wikipedia.org/wiki/User_Datagram_Protocol] you will see that the 5th and sixth byte are the length. this is 0x0055 which in decimal is 85

the double byte pairs are, in order:
0x041A (source port) = 1050
0x00A1 (dest port) = 161 (SNMP)
0x0055 (length) 85
oxDB51 (checksum) = 56145 (although this doesn't matter, and should be left in hex)

<div>
Thank you, but how does it convert to 85 please?
</div>


Thank you, but how does it convert to 85 please?

<div>
<div class="content wysiwyg-content">
I'm studying for my GSEC exam and one practice question has me stumped! &nbsp;It should be easy but I'm just not grasping it.<br />
<br />
The questions is What is the length in bytes of the UDP datagram in this UDP header?<br />
<br />
04 1a 00 a1 00 55 db 51<br />
<br />
I know 00 55 is the datagram. &nbsp;And I know the answer is 85. &nbsp;However, I have no idea why the answer is 85.<br />
<br />
This should be a hex to decimal conversion correct?<br />
<br />
Thank you!!
</div>
</div>


I'm studying for my GSEC exam and one practice question has me stumped!  It should be easy but I'm just not grasping it.

The questions is What is the length in bytes of the UDP datagram in this UDP header?

04 1a 00 a1 00 55 db 51

I know 00 55 is the datagram.  And I know the answer is 85.  However, I have no idea why the answer is 85.

This should be a hex to decimal conversion correct?

Thank you!!

How to convert UDP header to Decimal

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.