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nettop(1) [osx man page]

nettop(1)						    BSD General Commands Manual 						 nettop(1)

nettop -- Display updated information about the network SYNOPSIS
nettop [-nc] [-m <mode>] DESCRIPTION
The nettop program displays a list of sockets or routes. The counts for network structures are updated periodically. While the program is running the following keys may be used: q Quit Up Arrow Scroll up Down Arrow Scroll down Right Arrow Scroll Right Left Arrow Scroll Left d Toggle delta output r Redraw screen p Toggle human readable numbers e Expand all c Collapse all h Bring up the help menu j Bring up the column selection menu. In this mode you can enable/disable columns and change their order. OPTIONS
A list of flags and their descriptions: -m <mode> Specify the mode. By default, nettop will monitor TCP and UDP sockets. The following modes are supported: tcp Only TCP sockets will be monitored udp Only UDP sockets will be monitored route Instead of sockets, the routing table will be monitored -n Disable address to name resolution -c Less intensive use of the CPU - draws less often Darwin May 31, 2019 Darwin

Check Out this Related Man Page

SS(8)							      System Manager's Manual							     SS(8)

ss - another utility to investigate sockets SYNOPSIS
ss [options] [ FILTER ] DESCRIPTION
ss is used to dump socket statistics. It allows showing information similar to netstat. It can display more TCP and state informations than other tools. OPTIONS
When no option is used ss displays a list of open non-listening TCP sockets that have established connection. -h, --help Show summary of options. -V, --version Output version information. -n, --numeric Do not try to resolve service names. -r, --resolve Try to resolve numeric address/ports. -a, --all Display both listening and non-listening (for TCP this means established connections) sockets. -l, --listening Display only listening sockets (these are omitted by default). -o, --options Show timer information. -e, --extended Show detailed socket information -m, --memory Show socket memory usage. -p, --processes Show process using socket. -i, --info Show internal TCP information. -s, --summary Print summary statistics. This option does not parse socket lists obtaining summary from various sources. It is useful when amount of sockets is so huge that parsing /proc/net/tcp is painful. -b, --bpf Show socket BPF filters (only administrators are allowed to get these information). -4, --ipv4 Display only IP version 4 sockets (alias for -f inet). -6, --ipv6 Display only IP version 6 sockets (alias for -f inet6). -0, --packet Display PACKET sockets (alias for -f link). -t, --tcp Display TCP sockets. -u, --udp Display UDP sockets. -d, --dccp Display DCCP sockets. -w, --raw Display RAW sockets. -x, --unix Display Unix domain sockets (alias for -f unix). -f FAMILY, --family=FAMILY Display sockets of type FAMILY. Currently the following families are supported: unix, inet, inet6, link, netlink. -A QUERY, --query=QUERY, --socket=QUERY List of socket tables to dump, separated by commas. The following identifiers are understood: all, inet, tcp, udp, raw, unix, packet, netlink, unix_dgram, unix_stream, packet_raw, packet_dgram. -D FILE, --diag=FILE Do not display anything, just dump raw information about TCP sockets to FILE after applying filters. If FILE is - stdout is used. -F FILE, --filter=FILE Read filter information from FILE. Each line of FILE is interpreted like single command line option. If FILE is - stdin is used. FILTER := [ state TCP-STATE ] [ EXPRESSION ] Please take a look at the official documentation (Debian package iproute-doc) for details regarding filters. USAGE EXAMPLES
ss -t -a Display all TCP sockets. ss -u -a Display all UDP sockets. ss -o state established '( dport = :ssh or sport = :ssh )' Display all established ssh connections. ss -x src /tmp/.X11-unix/* Find all local processes connected to X server. ss -o state fin-wait-1 '( sport = :http or sport = :https )' dst 193.233.7/24 List all the tcp sockets in state FIN-WAIT-1 for our apache to network 193.233.7/24 and look at their timers. SEE ALSO
ip(8), /usr/share/doc/iproute-doc-3.10.0/ (package iproute-doc) AUTHOR
ss was written by Alexey Kuznetosv, <>. This manual page was written by Michael Prokop <> for the Debian project (but may be used by others). SS(8)
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