Bekijk de volledige versie : How is this possible?

28-10-2006, 10:05

I have find a new IP in asus PORT FORWARDING page, but when i telnet to the asus i see not this IP. How can i find the MAC for this IP, and how can i block it?



28-10-2006, 13:41
arp entries have a finite time to live, so after a while, they will be no longer visible. If that device doesn't communicate, you won't see it there.
Do you use DHCP in you LAN? If you do use it, there should be an entry in the syslog somewhere. Or in the DHCP leases page.

Did you enable UPNP? No wonder, eveybody on you LAN can open ports...
If YOU want to be in control, disable UPNP first.

28-10-2006, 15:09
Yes i use DHCP but in range - 255. I dont see this computer in LAN, have scan the network with many progs, but nothing.
How can i disable UPNP?

28-10-2006, 19:24
Manualy change to on a conected pc and activate upnp then disconnect and use your org. ip-adress again. I think it will erase the prob.

I think U had some pc with that ip before and it didnt closed right.
I had these myself but on a d-link.


28-10-2006, 19:31
You can disable UPNP with the Web Interface on the page "IP Config - Miscellaneous".
Do you have WLAN active? Open or with WEP or WPA-PSK?
How large is you LAN? Do you have access to all rooms/offices? Maybe somebody connected a Laptop you don't know of?

28-10-2006, 19:50
i have 45-50 PC connected via asus to internet. I set manualy IPs from 20-65, DHCP from 200-255. Dont use wireless, only WAN port. I have no access to all PCs, while the PCs are not in one building.
Is possible that the pc with IP 70 use the pc with ip 50 as proxi server and i dont see when is connected?