Capture packets from IOS real machine

1. Search for and install OpenSSH in cydia
2. Enable termail to ensure that the desktop and the device are in the same LAN and log on to the server using SSH,
Like SSH root@10.10.56.191
Termail display
The authenticity of host '10. 10.56.191 (10.10.56.191) 'can't be established.
RSA key fingerprint is 75: E7: 85: A9: 6d: 31: 41: 69: C2: F7: 88: Ce: A6: AF: DC: 8B.
Are you sure you want to continue connecting (Yes/No )?
Enter yes to continue
Warning: Permanently added '10. 10.56.191 '(RSA) to the list of known hosts.
Root@10.10.56.191's password:
Enter the default password Alpine
Enter success. Enter ls to display the current folder content.

OpenSSH reference link: http://www.52cydia.com/cydia-course/72.html

Few commands can be executed here. If you want to execute Ping, curl, and so on, the system prompts that the command does not exist,
You can refer to the link to install more packages in cydia to support more commands.

Http://stefan321.iteye.com/blog/1674623

Question: Remember to select "Developer" when using cydia. If "user" is selected at the beginning ", you can go to cydia-> sources-> Settings-> developer to modify the software package. Otherwise, you cannot find these software packages.

Tcpdump nohup tcpdump-S 0-W test. pcap port 80 is recorded and stored in a local file.
For more tcpdump commands, refer to the following

Http://www.cnblogs.com/ggjucheng/archive/2012/01/14/2322659.html

There is also a illustrated packet capture process, refer to the http://blog.csdn.net/fengsh998/article/details/8677556