A method, apparatus and computer program product for preventing infection propagation in a DMVPN is presented. An infected spoke router site is isolated from the DMVPN network such that the spoke router may (bi-directionally) completely or partially limit communicating with any network devices (including the hub router, any other spoke routers etc.) within the DMVPN which prevents the DMVPN melt-down, isolates a worm-infected spoke router site from the rest of the DMVPN and restricts the spread of the worm within the DMVPN network.