Blacklisting some keycodes

[trustin]

Would it be possible to blacklist some keycodes so that certain key eventss are not sent to the remote machines?

Why? I have 'Creative Sound Blaster X7' connected to the local machine. When I turn its volume knob, it generates some keyboard events like volume up/down and mute. Such events should not be sent to the remote machines because they will change the volumes of the remote machines, which may not be the desired behavior.

[trustin]

Here's the Xev output for the volume knob events:

KeyRelease event, serial 49, synthetic NO, window 0x4200001,
    root 0xdc, subw 0x0, time 36973126, (66,88), root:(67,891),
    state 0x0, keycode 121 (keysym 0x1008ff12, XF86AudioMute), same_screen YES,
    XLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyRelease event, serial 49, synthetic NO, window 0x4200001,
    root 0xdc, subw 0x0, time 36980247, (66,88), root:(67,891),
    state 0x0, keycode 122 (keysym 0x1008ff11, XF86AudioLowerVolume), same_screen YES,
    XLookupString gives 0 bytes: 
    XFilterEvent returns: False

KeyRelease event, serial 49, synthetic NO, window 0x4200001,
    root 0xdc, subw 0x0, time 36983987, (66,88), root:(67,891),
    state 0x0, keycode 123 (keysym 0x1008ff13, XF86AudioRaiseVolume), same_screen YES,
    XLookupString gives 0 bytes: 
    XFilterEvent returns: False