| Server IP : 216.250.13.251 / Your IP : 216.73.216.164 Web Server : nginx/1.24.0 System : Linux gunay 6.8.0-134-generic #134-Ubuntu SMP PREEMPT_DYNAMIC Fri Jun 26 18:43:11 UTC 2026 x86_64 User : root ( 0) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : OFF Directory : /proc/thread-self/root/usr/share/doc/bpfcc-tools/examples/tracing/ |
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Demonstrations of tcpv4connect.py, the Linux eBPF/bcc version. This example traces the kernel function performing active TCP IPv4 connections (eg, via a connect() syscall; accept() are passive connections). Some example output (IP addresses changed to protect the innocent): # ./tcpv4connect.py PID COMM SADDR DADDR DPORT 1479 telnet 127.0.0.1 127.0.0.1 23 1469 curl 10.201.219.236 54.245.105.25 80 1469 curl 10.201.219.236 54.67.101.145 80 This output shows three connections, one from a "telnet" process and two from "curl". The output details shows the source address, destination address, and destination port. This traces attempted connections: these may have failed. The overhead of this tool should be negligible, since it is only tracing the kernel function performing a connect. It is not tracing every packet and then filtering. This is provided as a basic example of TCP tracing. See tools/tcpconnect for a more featured version of this example (a tool).