We have a problem containing port scans originating from our dial-up pool clients...Can someone advise us on what measures to take. We plan to block the whole IP block but don't know which ports to block so as not to affect the service.

We are trying to cross-connect a 7206 NPE300 router's FastEthernet with another ethernet device. but the line protocol does not come up. We tried to cross-connect the ethernet device to a 3640 router using the same cross-cable and it works.Are there ...

I have a DSL client with the following configuration,interface ATM4/ima1.5 point-to-point bandwidth 256 ip address 210.3.17.65 255.255.255.240 atm route-bridged ip pvc 0/38 encapsulation aal5snapWhen his connection goes down. He can ping the gateway...

I am unable to access a Cat6K via console. Ping/Telnet also not possible on the sc0 interface. But am able to access the msfc2 module. The console mode button is also pressed in. Am afraid to reset the whole box coz it might crash and and have no way...