What are the different packet states recognized by the connection tracking iptables extension?
What are the different packet states recognized by the connection tracking iptables extension?
Homework Answers
Packet States :
INVALID
The packet is associated with no known connection.
NEW The packet has started a new connection or otherwise
associated with a connection which has not seen packets in
both directions.
ESTABLISHED
The packet is associated with a connection which has seen
packets in both directions.
RELATED
The packet is starting a new connection, but is associated
with an existing connection, such as an FTP data transfer or
an ICMP error.
UNTRACKED
The packet is not tracked at all, which happens if you
explicitly untrack it by using -j CT --notrack in the raw
table.
SNAT A virtual state, matching if the original source
address
differs from the reply destination.
DNAT A virtual state, matching if the original destination
differs
from the reply source.
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What are the different packet states recognized by the
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