#NETWORK CONNECTION WINDOWS#

Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name Sample outputs: Active Internet connections (only servers) Sample outputs: Recv-Q Send-Q Local Address:Port Peer Address:Port

#NETWORK CONNECTION WINDOWS#

Or you can use the netstat command as follows:ģ96 resets received for embryonic SYN_RECV socketsĢ packets pruned from receive queue because of socket buffer overrunģ ICMP packets dropped because they were out-of-windowĢ166428 TCP sockets finished time wait in fast timerĢ773 time wait sockets recycled by time stampġ1 packets rejects in established connections because of timestampĢ98 delayed acks further delayed because of locked socketġ6413851 packets directly queued to recvmsg prequeue.Ħ27914668 packets directly received from backlogġ146535624 packets directly received from prequeueġ0588802 packets header predicted and directly queued to userĨ646100 acknowledgments not containing data receivedĥ times recovered from packet loss due to fast retransmitĥ96 times recovered from packet loss due to SACK dataĭetected reordering 4 times using time stampħ congestion windows partially recovered using Hoe heuristicĢ08 congestion windows recovered after partial ackĢ26 packets collapsed in receive queue due to low socket bufferģ4 connections reset due to unexpected dataġ84 connections reset due to early user close

tcptrack and iftop commands: Displays information about TCP connections it sees on a network interface and display bandwidth usage on an interface by host respectively.ĭisplay Currently Established, Closed, Orphaned and Waiting TCP sockets, enter:.netstat command: It can display network connections, routing tables, interfaces and much more.ss command: It dump socket (network connection) statistics such as all TCP / UDP connections, established connection per protocol (e.g., display all established ssh connections), display all the tcp sockets in various state such as ESTABLISHED or FIN-WAIT-1 and so on.Along with network connectivity, network administrators and maintenance workers also have to focus on security as a major concern, where the reliability of networking systems is closely related to protecting the data that is kept within them. IT professionals, particularly network administrators and network analysts, talk about connectivity as one piece of the network puzzle as they look at an ever greater variety of networks and the ways networking pieces go together.Īd hoc networks and vehicular networks are just two examples of new kinds of networks that work on different connectivity models. Each has its own pros and cons in terms of network connectivity. There are many different network topologies including hub, linear, tree and star designs, each of which is set up in its own way to facilitate connectivity between computers or devices.

Related terms include network topology, which refers to the structure and makeup of the network as a whole. Network connectivity is also a kind of metric to discuss how well parts of the network connect to one another.

Network connection