https://www.seenlyst.com/blog/geo-blocking-ufw-iptables/
https://blog.reverside.ch/UFW-GeoIP-and-how-to-get-there/

IPtables https://ithelp.ithome.com.tw/articles/10312284

https://cylab.be/blog/330/benchmark-linux-systems-with-sysbench?accept-cookies=1

CPU speed:
    events per second:   924.48

General statistics:
    total time:                          10.0006s
    total number of events:              9247

Latency (ms):
         min:                                    0.97
         avg:                                    1.08
         max:                                    1.70
         95th percentile:                        1.34
         sum:                                 9990.05

Threads fairness:
    events (avg/stddev):           9247.0000/0.00
    execution time (avg/stddev):   9.9901/0.00

CPU speed:
    events per second:  1778.18

General statistics:
    total time:                          10.0008s
    total number of events:              17787

Latency (ms):
         min:                                    0.97
         avg:                                    1.12
         max:                                    3.35
         95th percentile:                        1.37
         sum:                                19973.12

Threads fairness:
    events (avg/stddev):           8893.5000/61.50
    execution time (avg/stddev):   9.9866/0.00

Total operations: 33993717 (3398575.78 per second)

33196.99 MiB transferred (3318.92 MiB/sec)


General statistics:
    total time:                          10.0003s
    total number of events:              33993717

Latency (ms):
         min:                                    0.00
         avg:                                    0.00
         max:                                  229.62
         95th percentile:                        0.00
         sum:                                 4694.85

Threads fairness:
    events (avg/stddev):           33993717.0000/0.00
    execution time (avg/stddev):   4.6949/0.00

Throughput:
    read, MiB/s:                  21.05
    written, MiB/s:               0.00

Throughput:
    read, MiB/s:                  0.00
    written, MiB/s:               126.66

Throughput:
    read, MiB/s:                  393.88
    written, MiB/s:               0.00

Throughput:
    read, MiB/s:                  0.00
    written, MiB/s:               463.07

https://cylab.be/blog/330/benchmark-linux-systems-with-sysbench?accept-cookies=1

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