Now to your problem.
As a general matter, much of this information can be found in the /proc filesystem, a pseudo-filesystem that gives you read (sometimes write) access to kernel internals in ways that make the internals look like files. Common apps that provide interfaces to this information are netstat, ifconfig, and ip (also known as iproute). iptables rulesets (iptables is the interface to the kernel's firewalling and NATing code) for logging packets may be needed to get some of the more fine-grained things you want to know about (e.g., retransmits).
Consulting the man pages for these apps is a good way to start to gain an understanding of how to access this information.
The information is usually kept in static, not dynamic form (for example, cumulative bytes received and transmitted, but no measure of KB/sec transmitted or received), so you'd need to poll the static values periodically (via a cron script, say) and do the math yourself.
At 04:31 PM 9/20/2004 -0700, TEJAS VORA wrote:
Hi All,
I am working on a company project and as a part of it - I have to collect and show some network information on the Monitoring utility. Please help to find out that how can I collect these information from a Linux Machine.
1. Number of active TCP connection
2. Information of Active connections (Source and Dest IP, Source and Dest Port)
3. Retransmitted packets due to Duplicate ACK and SACK
4. Connection Duration and RTT
5. Transmission Troughput (in KB/Sec)
6. Number of Newly Created TCP Connections
7. Closed TCP Connections
8. Total Data transmitted (in byte)
9. Total Data Retransmitted (in byte)
Also, does anybody have any information on Watchdaog or how to use watchdog and SOCKS and SNOOP Daemon? I am using RedHat 9.0 machine.
Any help is apreciated.
Looking for an answer.
Tejas Vora
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