Sysadmin benchmarks problem to check the Network Speed Tests

iperf uses TCP port 5001 https://www.linode.com/docs/networking/diagnostics/install-iperf-to-diagnose-network-speed-in-linux/

So you need to open up and whitelist that port in CSF Firewall's TCP_IN and TCP_OUT comma separated list of ports in /etc/csf/csf.conf config file as per outline on official Centmin Mod site at CSF Firewall - CentminMod.com LEMP Nginx web stack for CentOS

You can run these commands to backup CSF Firewall config and add port 5001 to your whitelist for TCP_IN and TCP_OUT

Code (Text):

csf --profile backup cmm-b4-iperf-whitelist
egrep '^TCP_|^TCP6_|^UDP_|^UDP6_' /etc/csf/csf.conf
sed -i "s/TCP_IN = \"/TCP_IN = \"5001,/g" /etc/csf/csf.conf
sed -i "s/TCP6_IN = \"/TCP6_IN = \"5001,/g" /etc/csf/csf.conf
sed -i "s/TCP_OUT = \"/TCP_OUT = \"5001,/g" /etc/csf/csf.conf
sed -i "s/TCP6_OUT = \"/TCP6_OUT = \"5001,/g" /etc/csf/csf.conf
egrep '^TCP_|^TCP6_|^UDP_|^UDP6_' /etc/csf/csf.conf

once you edit /etc/csf/csf.conf, you need to restart CSF Firewall

Code (Text):

csf -ra

 

You can't as you need for other end to have iperf. You can use just speedtest-cli tool sivel/speedtest-cli

download it to /usr/local/binx/speedtest-cli

Code (Text):

wget -4 -O /usr/local/bin/speedtest-cli https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest.py
chmod +x /usr/local/bin/speedtest-cli

help info

Code (Text):

speedtest-cli -h
usage: speedtest-cli [-h] [--no-download] [--no-upload] [--single] [--bytes]
                     [--share] [--simple] [--csv]
                     [--csv-delimiter CSV_DELIMITER] [--csv-header] [--json]
                     [--list] [--server SERVER] [--exclude EXCLUDE]
                     [--mini MINI] [--source SOURCE] [--timeout TIMEOUT]
                     [--secure] [--no-pre-allocate] [--version]
Command line interface for testing internet bandwidth using speedtest.net.
--------------------------------------------------------------------------
https://github.com/sivel/speedtest-cli
optional arguments:
  -h, --help            show this help message and exit
  --no-download         Do not perform download test
  --no-upload           Do not perform upload test
  --single              Only use a single connection instead of multiple. This
                        simulates a typical file transfer.
  --bytes               Display values in bytes instead of bits. Does not
                        affect the image generated by --share, nor output from
                        --json or --csv
  --share               Generate and provide a URL to the speedtest.net share
                        results image, not displayed with --csv
  --simple              Suppress verbose output, only show basic information
  --csv                 Suppress verbose output, only show basic information
                        in CSV format. Speeds listed in bit/s and not affected
                        by --bytes
  --csv-delimiter CSV_DELIMITER
                        Single character delimiter to use in CSV output.
                        Default ","
  --csv-header          Print CSV headers
  --json                Suppress verbose output, only show basic information
                        in JSON format. Speeds listed in bit/s and not
                        affected by --bytes
  --list                Display a list of speedtest.net servers sorted by
                        distance
  --server SERVER       Specify a server ID to test against. Can be supplied
                        multiple times
  --exclude EXCLUDE     Exclude a server from selection. Can be supplied
                        multiple times
  --mini MINI           URL of the Speedtest Mini server
  --source SOURCE       Source IP address to bind to
  --timeout TIMEOUT     HTTP timeout in seconds. Default 10
  --secure              Use HTTPS instead of HTTP when communicating with
                        speedtest.net operated servers
  --no-pre-allocate     Do not pre allocate upload data. Pre allocation is
                        enabled by default to improve upload performance. To
                        support systems with insufficient memory, use this
                        option to avoid a MemoryError
  --version             Show the version number and exit

To test different locations use --list to find the server ID and location you want to test and use --server SERVERID to test that location. Ensuring --secure flag is used which seems to require port 8080 TCP outbound open so CSF Firewall needs to open 8080 TCP_OUT and TCP6_OUT

Code (Text):

csf --profile backup cmm-b4-speedtest-cli
egrep '^TCP_|^TCP6_|^UDP_|^UDP6_' /etc/csf/csf.conf
sed -i "s/TCP_OUT = \"/TCP_OUT = \"8080,/g" /etc/csf/csf.conf
sed -i "s/TCP6_OUT = \"/TCP6_OUT = \"8080,/g" /etc/csf/csf.conf
egrep '^TCP_|^TCP6_|^UDP_|^UDP6_' /etc/csf/csf.conf
csf -ra

Or for testing location closest to your server use below

Code (Text):

speedtest-cli --share --secure                                
Retrieving speedtest.net configuration...
Testing from OVH SAS (xxx.xxx.xxx.xxx)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by TelKel (Laval, QC) [6.62 km]: 9.605 ms
Testing download speed................................................................................
Download: 583.80 Mbit/s
Testing upload speed................................................................................................
Upload: 240.95 Mbit/s
Share results: http://www.speedtest.net/result/9296127556.png

 

use --list and --server id flags to run 50 different speedtest-cli tests from different locations outputted by --list

Code (Text):

  --list                Display a list of speedtest.net servers sorted by
                       distance
  --server SERVER       Specify a server ID to test against. Can be supplied
                       multiple times

return first 10 results from --list

Code (Text):

speedtest-cli --list | head -n10
Retrieving speedtest.net configuration...
17567) Bell Canada (Laval, QC, Canada) [6.62 km]
 6835) TelKel (Laval, QC, Canada) [6.62 km]
  911) Fibrenoire Internet (Montreal, QC, Canada) [9.56 km]
16754) Bell Mobility (Montreal, QC, Canada) [9.56 km]
 4393) TELUS (Montreal, QC, Canada) [9.56 km]
24707) TELUS Mobility (Montreal, QC, Canada) [9.56 km]
12100) Openface Internet (Montreal, QC, Canada) [9.56 km]
 8825) Rogers (Montreal, QC, Canada) [9.56 km]
 6689) HOTServers LLC (Montreal, QC, Canada) [9.56 km]

 

think only one by one

as to locations i believe list of ordered by closest geographically to your server to furthest away so would need to dig into that and find geographic location's server ids you want to test