In local network environments like internet cafes, the biggest headache is virus infection and propagation. Internet cafe router viruses are precisely the kind of trouble network administrators frequently encounter. To address this frustration, setting up antivirus measures on internet cafe routers has become a hot topic. A virus on a single client machine can potentially spread to all clients throughout the internet cafe.
So, can the internet cafe router, as a critical device in the network, block the spread of viruses?
The answer is yes. Refer to the instructions below:
First, create access lists at both the inbound and outbound interfaces of the router to control the entry and exit of viruses. These access control lists are port-based (for example, ports 135, 136, 445, 4444, etc.). Typically, administrators can view the packet counts to adjust their order; placing the rules that translate the most packets first can improve speed.
Router(Config)#Access-list110denytcpanyanyeq135
Router(Config)#Access-list110denyudpanyanyeq135
Router(Config)#Access-list110denytcpanyanyeq136
Router(Config)#Access-list110denyudpanyanyeq136
Router(Config)#Access-list110denytcpanyanyeq445
Router(Config)#Access-list110denyudpanyanyeq445
Router(Config)#Access-list110denytcpanyanyeq4444
Router(Config)#Access-list110denyudpanyanyeq4444
Following the method above, simply apply the list to the corresponding interface.
Another measure is router optimization. Keep the services running on the router to a minimum; enable only the necessary services based on your needs, and disable any unnecessary ones. This not only saves memory but, more importantly, enhances security.
Setting up internet cafe routers to prevent virus propagation and infection requires not only understanding virus characteristics but also knowing how to configure them