This read-create Integer32 specifies the ACL (access control list) rule number used to filter VTY login/logout connections for a given user-interface index and connection-direction (inbound/outbound/IPv4/IPv6/link-layer), as selected by the row's hpnicfVtyAccConnway index. An admin sets this to bind a specific ACL to a VTY line's access control, restricting which source addresses or MACs are permitted to establish or tear down management sessions on that VTY. For example, an admin restricting remote management to a jump host would set this object to reference an ACL numbered 2000 that permits only that host's IP, applied to the inbound connection-way entry for a given VTY user interface.