Ravi Sir's Cards › AWS
Memory of connections?
This comparison card contrasts Memory of connections. Packet-filter is described as each packet alone. It also notes no table. Stateful inspection is described as tracks connections. It also notes return traffic easier. The card pairs Packet-filter with labs teaching 5-tuple, and Stateful inspection with production defaults.
Read card text
What this card says
Memory of connections?
Packet-filter
Each packet alone; no table.
Stateful inspection
Tracks connections; return traffic easier.
Key points
Simple ACL routers; early filters.
Most modern host and cloud SGs.
Example
iptables without conntrack
Use when
Labs teaching 5-tuple.
Production defaults.