A No Access Shell

noaccess.c

// Compile using `gcc noaccess.c -o noaccess`
//
// Move to /usr/bin, and set as a shell for any deserving users

#include<stdio.h>

int main() {
    printf("Shell access is denied. \nConnect using -N, or keep this window open to use your tunnel.\n");

    while(1==1);
}