Share the Tips mentioned in a recent linux penetration test case

The target Intranet environment is harsh,
Dmz environment. Isolated from the Internet. The DNS is blocked, and all kinds of failures.
It may be caused by apache configuration or system monitoring. The reused rootkit will be disconnected once every 1 minute and cannot be forwarded through the wget port. The large tools can be downloaded normally.
So with the solution below, let's look at the figure and talk about it.
 


 
Www.2cto.com local segmentation, webshell upload, merge, install. It was finally uploaded.
Rpm installs various lib library files that indicate missing arm and legs. This is beyond the scope of the discussion. The kernel is too old.
Why not use split? Because split only supports text and binary files. OVER