Other Help Topics :: Possible internet vulnerability?

The ShieldsUp scanner
https://www.grc.com/x/ne.dll?bh0bkyd2

has detected that my computer (DSL 3) has port 68 open. (bootstrap protocol)

https://www.grc.com/port_68.htm

I've yet to have any trouble from this, but could future hackers get in through it?

(oh, and for those of you with windows, go to sheildsup and see what it finds)

From what I understand port 68 must be left open to have a dynamic IP addres received through DHCP. And that it is quite normal.

Port 68 is from the pump -i eth0 used to fetch an IP.

If that is a concern to you then add

pkill pump

to your /opt/bootlocal.sh after obtaining your IP.
Port 68 will be closed.

Wow, that was quick!

Quote (Jason W @ June 04 2008,03:00)

From what I understand port 68 must be left open to have a dynamic IP addres received through DHCP. And that it is quite normal.

If DHCP get-address is all its for, that sounds safe enough.

Quote (roberts @ June 04 2008,03:02)

Port 68 is from the pump -i eth0 used to fetch an IP.
If that is a concern to you then add
pkill pump
to your /opt/bootlocal.sh after obtaining your IP.
Port 68 will be closed.

I might go ahead and kill the pump anyway, though, since I use
an arcane dialup modem for internet, and set my lan address
with ifconfig eth0 192.168.x.x

Thanx

You could also add "nodhcp" to boot codes to stop pump from starting at all.

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