12.1 allowcom (IPC)

1. Syntax
   allowcom -ipc$\mid$-unix$\mid$-sem$\mid$-msg$\mid$-msgq$\mid$-shm$\mid$-pipe to domain [r],[w];
2. Meaning
   Allow to communicate with to domain by specified IPC.
   If to domain is self, this means IPC within domain. If to domain is * the domain can IPC to every domain. -ipc is allowing all kinds of IPCs, it is simplified configuration. If you want to specify specific kind of ipc, you can use following. -unix is unix domain socket, -sem is semaphore, -msg is message, -msgq is message queue, -shm is shared memory, -pipe is pipe.