A value of readWriteAll(4) allows the community to
read and write all objects in the MIB. A value of
readWrite(3) allows the community to read and write all
objects except the adptrCommunityTable, which it cannot
access at all. A value of readOnly(2) allows the
community to read all objects except the
adptrCommunityTable. A value of other(1) allows the
community no access.