I perfomed a UDP port scan against my own computer I found p
I perfomed a UDP port scan against my own computer. I found port 68 UDP open. Considering that port 68 was identified to be open by my port scans, what attempt could an attacker take to hack this.
Solution
Possible attacks on port 68: The base DHCP doesn\'t include any mechanism for authentication. Because of this varies attacks may possible.
Communication from clients to server DHCP are broadcast. Because this, is possible to attacker (DHCP Fake) send a ACK packet and it is faster than real DHCP Server and fool DHCP client.
PACKETS USED IN DHCP SESSION
CLIENT TO NET --> Discovery DHCP SERVER (BROADCAST)
DHCP SERVER TO CLIENT --> OFFER DHCP (UNICAST)
CLIENT TO DHCP SERVER --> REQUEST (BROADCAST)
DHCP SERVER TO CLIENT --> ACK (UNICAST)
| Port | Protocol | Service | Details |
| 68 | UDP | bootp client | Bootstrap protocol client. Used by client machines to obtain dynamic IP addressing information from a DHCP server. |
