Iptables-save (8)
Summation
iptables-save [-c] [-t table]
Description
Dump with a simple syntax format to stdout (standard output).
Use the shell to provide I / 0 redirection to a file
-c, - --counters
The current value of all packets and byte counters are included in the output.
-T, - Table TableName
Only output the table of the specified table name, if no specified, all available tables will be output
Summation
iptables-restore [-c] [-n]
Description
The role of iptables-restore is to recover IP TABLE by stdin (standard input).
The I / O redirection feature provided by your shell is read from a file.
-c, - --counters
Restore the current value of all packets and byte counters
-n, --noflush
Do not delete the previous content in the table, if not specified (this parameter), iptables-restore will empty (delete) all
In the previous table.