nettop(1) BSD General Commands Manual nettop(1)
nettop -- Display updated information about the network
nettop [-nc] [-m <mode>]
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:
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.
A list of flags and their descriptions:
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
ss [options] [ FILTER ]
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.
When no option is used ss displays a list of open non-listening TCP sockets that have established connection.
Show summary of options.
Output version information.
Do not try to resolve service names.
Try to resolve numeric address/ports.
Display both listening and non-listening (for TCP this means established connections) sockets.
Display only listening sockets (these are omitted by default).
Show timer information.
Show detailed socket information
Show socket memory usage.
Show process using socket.
Show internal TCP information.
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.
Show socket BPF filters (only administrators are allowed to get these information).
Display only IP version 4 sockets (alias for -f inet).
Display only IP version 6 sockets (alias for -f inet6).
Display PACKET sockets (alias for -f link).
Display TCP sockets.
Display UDP sockets.
Display DCCP sockets.
Display RAW sockets.
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.
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.
ip(8), /usr/share/doc/iproute-doc-3.10.0/ss.ps (package iproute-doc)
ss was written by Alexey Kuznetosv, <email@example.com>.
This manual page was written by Michael Prokop <firstname.lastname@example.org> for the Debian project (but may be used by others).