B ok. guide 183 page. Although (UDP) is a message-oriented, stateless protocol, it doesn’t inherently require confirmed bidirectional connections like TCP, so there is no connection state. However, FortiGate’s session table does use the proto_state= field to track the unidirectional UDP as state 0, and the bidirectional UDP as state 1.When FortiGate receives the first packet, it creates the entry and sets the state to 0. If the destination replies, FortiGate updates the state flag to 1 for the remainder of the conversation.
C is the answer.
UDP (proto 17)
Note: Even though UDP is a stateless protocol, the FortiGate still keeps track of 2 different 'states'
State
Value
UDP Reply not seen
0
UDP Reply seen
1
Answer is not C, proto_state only has 2 digits for TCP traffic !
B is correct, in proto_state=01 the 0 means that the connection is only inspected one-way (1 would be two-way) and the 1 is from the TCP state machine and stands for status ESTABLISHED.
C is the answer, Protocol refers to the Assigned IP protocol number and UDP is 17 while TCP is 06. They are just simply found in the Protocol field of the IPv4 header, UDP will be presented as 11 and TCP will be presented as 06 when they are put in Hexadecimal format.
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