A 100-byte packed binary structure that bundles the session's source and destination addresses and ports, protocol, state, and last-update time into one big-endian encoded blob, per the byte layout documented directly in the object's description. It exists as an efficient bulk-retrieval alternative to reading each of the individual session columns separately, useful for management tools polling many sessions at once. A monitoring tool could fetch firewallSessionPacked1 for a session and decode the first 4 bytes as the source address, the next 4 as the source port, and so on, reconstructing the full session record from a single SNMP GET.