METHOD AND DEVICE FOR PREVENTING SERVICE ILLEGAL ACCESS

摘要

The present invention is applicable in the field of network access control. Provided are a method and device for preventing service illegal access. The method comprises: receiving a service access request packet, where the packet comprises an access-requested server domain name and an access-requested server IP address; looking up an IP address that corresponds to the access-requested server domain name; determining whether or not the access-requested IP address is consistent with the IP address that is looked up; and if the access-requested IP address and the IP address that is looked up are inconsistent, then interrupting the service access request. Embodiments of the present invention compare the IP address that is looked up with the IP address of the access-requested server that is comprised in the packet, thus effectively determining a service access request having an illegally modified packet, thus interrupting the service access request. This effectively solves the problem that a gateway device is prevented from billing for a charged service because a user has illegally modified a domain name in a packet.