sudo sh <<'END_IFTOP'
    filter="not (src net (10 or 172.16/12 or 192.168/16) and dst net (10 or 172.16/12 or 192.168/16))"
    iftop -i enp1s0 -f "$filter" -t -L1 2> /dev/null |
    awk '$1 == "Cumulative" {print $5}' > $HOME/output.file
END_IFTOP