Network

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ifstat is a tool to report network interfaces bandwith just like vmstat/iostat do for other system counters. ifstat gathers these statistics from the kernel internal counters, which is highly operating system dependent.Right now, the following systems are supported: Linux >= 2.2.0 (through /proc/net/dev file). FreeBSD >= 2.2 (using the ifmib(4) interface). Solaris >= 5.6 (using the kstat(3K) interface). IRIX and OpenBSD (using the SIOCGIFDATA ioctl). Ifstat Ifstat
netstat command and shell pipe feature can be used to dig out more information about particular IP address connection. You can find out total established connections, closing connection, SYN and FIN bits and much more. You can also display summary statistics for each protocol using netstat. netstat -atp netstat -atp
Q. How do I track my network usage (network usage monitoring) and protocol wise distribution of traffic under Debian Linux? How do I get a complete picture of network activity? ntop ntop
Name ping, ping6 - send ICMP ECHO_REQUEST to network hosts Synopsis ping [ -LRUbdfnqrvVaAB] [ -c count] [ -i interval] [ -l preload] [ -p pattern] [ -s packetsize] [ -t ttl] [ -w deadline] [ -F flowlabel] [ -I interface] [ -M hint] [ -Q tos] [ -S sndbuf] [ -T timestamp option] [ -W timeout] [ hop...] destination Description ping -c 20 ping -c 20
dig dig Name dig - DNS lookup utility Synopsis