"Whoever wrote MobaXterm hated Emacs users." -- David Nichols
The default keyboard bindings for MobaXterm are not Emacs-friendly, but they're mostly easy to fix.
Click the Settings icon on the toolbar.
Click the X11 tab, and make sure "Unix-compatible keyboard" is unchecked.
Click the Misc tab, then click "Edit keyboard Shortcuts."
Change the shortcut for "Save terminal output" from Ctrl-S to Ctrl-Alt-S.
Change the shortcut for "Find in terminal" from Ctrl-F to Alt-F.
The X font set included with MobaXterm does not appear to support Asian languages, even in UTF-8 mode.
The terminal screen binds Backspace to Ctrl-H, and the setting of the "Unix-compatible keyboard" option does not change this. If you plan to run Emacs in text mode (instead of in an X window) you will need to run the command 'stty erase ^H' first.