Difference between DHCP and Static IP Address?

Question

So there is some suspicious activity going on in my internet so I decided to check connected devices to my Wi-Fi. I discovered something called 'Client 6' which I know is not mine because everything else is accounted for. Everything is connected to DHCP and this 'Client 6' is the only thing connected to 'Static'. Can someone explains what this means?

Answer 1

Hi There,

If it were me I would give the ISP a call and ask them about the "client 6" that is connected to the router.

They will be able to explain or tell you how to fix the problem.



You might try rebooting the modem/router and see if the "client 6" is still there.

Another thing you can try is to change the password on the router and see if it is still there. Of course this means changing the password on any other equipment in the house....might be a pain to do but might be worth a try.



If the ISP cannot help and rebooting and changing the password does not help then there is always MAC address filtering on the router.



Hope this helps,

Al

Answer 2

1

Answer 3

To advance further on the previous answer, there is a difference between a static IP and a DHCP (dynamic) address and a DHCP Reservation.



As aptly described by 'I Like Stories', a static IP address is one which has been manually configured on the client device.



No two devices on the network may have the same IP address otherwise it would be ambiguous as to what device another is communicating with and may send data elsewhere and is thus not permitted. DHCP was developed to make management simple.



A DHCP server will lease out IP address to client devices that request an IP address. To avoid IP addresses conflicting with one another the DHCP server holds a table of all the IP addresses it has leased.



It is posible to create a DHCP reservation to reserve a particular IP address. The effect thereof is that the DHCP will not issue that IP address except to the device specified (by MAC address). DHCP reservations will show up on the DHCP table as the DHCP server is reserving a leased address.



The reason why a static IP typically does not appear on the DHCP table is that the DHCP server is not usually aware of a static device (since it is manually configured client side) except to the extent that it may not lease that address, for a conflict would occur and thus it takes note of the bad address.

Answer 4

DHCP = dynamic host configuration protocol. Devices using DHCP send a message to the network asking to an IP address when they boot up. The DHCP server (usually in the router) will respond with an IP address for the device, default gateway address and DNS server addresses, which the device uses for it's IP configuration.



Static IP addressing just means that the device in question was manually configured with an IP address and doesn't request one when booting up.



Question is, what are you looking at on the router to see this? The DHCP table? If so, a static IP address wouldn't typically show up in the DHCP table.

Answer 5

Static you can't change DHCP is good better say you're getting DDoS'd you can change it Satic you cant change your ip.