-aShows all connections, including listening ports.
-eShows Ethernet statistics, such as the number of bytes of data
received and sent (can be combined with the –s option).
-nShows addresses and port numbers in numeric form.
-oShows the owning process ID associated with each connection.
-p protoShows only the connections for the protocol specified by proto
(for example, TCP).
-rShows the routing table (the same information you get with the
ROUTE PRINT command in Windows).
-sShows per-protocol statistics.
Network Monitoring Tools
Many tools are available for ...
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