iftop: display bandwidth usage on an interface by host

Synopsis: iftop -h  [-npblNBP] [-i interface] [-f filter code]
                               [-F net/mask] [-G net6/mask6]

   -h                  display this message
   -n                  don't do hostname lookups
   -N                  don't convert port numbers to services
   -p                  run in promiscuous mode (show traffic between other
                       hosts on the same network segment)
   -b                  don't display a bar graph of traffic
   -B                  Display bandwidth in bytes
   -i interface        listen on named interface
   -f filter code      use filter code to select packets to count
                       (default: none, but only IP packets are counted)
   -F net/mask         show traffic flows in/out of IPv4 network
   -G net6/mask6       show traffic flows in/out of IPv6 network
   -l                  display and count link-local IPv6 traffic (default: off)
   -P                  show ports as well as hosts
   -m limit            sets the upper limit for the bandwidth scale
   -c config file      specifies an alternative configuration file
   -t                  use text interface without ncurses

   Sorting orders:
   -o 2s                Sort by first column (2s traffic average)
   -o 10s               Sort by second column (10s traffic average) [default]
   -o 40s               Sort by third column (40s traffic average)
   -o source            Sort by source address
   -o destination       Sort by destination address

   The following options are only available in combination with -t
   -s num              print one single text output afer num seconds, then quit
   -L num              number of lines to print

iftop, version 1.0pre4
copyright (c) 2002 Paul Warren <pdw@ex-parrot.com> and contributors

<VirtualHost *:443>
 DocumentRoot /var/www/html
 ServerName   pan.voidspace.cn
    SSLEngine on
    SSLCertificateFile "/root/.acme.sh/voidspace.cn_ecc/*****.cer"
    SSLCertificateKeyFile "/root/.acme.sh/*****.key"
    ErrorLog /var/www/logs/443panerror.log
    CustomLog /var/www/logs/443panaccess.log combined
    <Directory /var/www/html>  
            Options Indexes FollowSymLinks  
            AllowOverride All  
            Require all granted  
    </Directory>  
    SSLProxyEngine On
    ProxyPreserveHost On
    SSLProxyVerify none
    # 不验证后端服务器的证书
    SSLProxyCheckPeerCN off
    SSLProxyCheckPeerName off
    SSLProxyCheckPeerExpire off
    AllowEncodedSlashes NoDecode
    ProxyPass "/" "https://127.0.0.1:5212/" nocanon

</VirtualHost>

server{
    listen 443 ssl;
    listen [::]:443 ssl;
    listen 777 ssl;
    listen [::]:777 ssl;
    #对应你的域名
    server_name tasks.voidspace.cn;
    gzip on;
    gzip_comp_level 4;
    gzip_types application/javascript text/css application/json;
    gzip_vary on;
    gzip_static on;
    ssl_certificate /home/orangepi/.acme.sh/*****.cer;
    ssl_certificate_key /home/orangepi/.acme.sh/*****.key;
    ssl_session_timeout 5m;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:HIGH:!aNULL:!MD5:!RC4:!DHE;
    ssl_prefer_server_ciphers on;
    #如果是静态文件,直接指向目录,如果是动态应用,用proxy_pass转发一下
    location / {
        proxy_redirect     off;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
        proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
        proxy_max_temp_file_size 0;
        proxy_connect_timeout      600;
        proxy_send_timeout         600;
        proxy_read_timeout         600;
        proxy_buffer_size          4k;
        proxy_buffers              4 32k;
        proxy_busy_buffers_size    64k;
        proxy_temp_file_write_size 64k;
        proxy_pass http://localhost:58088;
    }
}