网络测试工具¶

1. 测试udp连通性
   

   # 在一端执行
   echo "hello,udp server." | nc -u 192.168.0.100 123
   # 在另一端抓包
   tcpdump -i any udp and port 123 -X
   

2. tcping
   

   1）使用tcptraceroute实现tcping
   apt install tcptraceroute
   http://www.vdberg.org/~richard/tcpping
   Usage: tcpping [-d] [-c] [-C] [-w sec] [-q num] [-x count] ipaddress [port]
   
           -d   print timestamp before every result
           -c   print a columned result line
           -C   print in the same format as fping's -C option
           -w   wait time in seconds (defaults to 3)
           -r   repeat every n seconds (defaults to 1)
           -x   repeat n times (defaults to unlimited)
   
   See also: man tcptraceroute
   
   Usage: tcptraceroute [-nNFSAE] [-i <interface>] [-f <first ttl>]
          [-l <packet length>] [-q <number of queries>] [-t <tos>]
          [-m <max ttl>] [-pP] <source port>] [-s <source address>]
          [-w <wait time>] <host> [destination port] [packet length]
   
   2）原生
   windows(带源码）:
   https://www.elifulkerson.com/projects/tcping.php
   linux:
   https://github.com/mkirchner/tcping/
   https://codeload.github.com/mkirchner/tcping/tar.gz/refs/tags/2.1.0
   Usage: ./tcping [-q] [-f <4|6>] [-t timeout_sec] [-u timeout_usec] <host> <port>