I am having issues with tcpdump in terminal

Question

I always end up with this error message, "tcpdump: ioctl(SIOCIFCREATE): Operation not permitted" Any ideas to what I am doing wrong. I am running this on OS X Yosemite.

You need to include code so we know what is causing the error, check here for some advice: http://stackoverflow.com/help/mcve — Evan Frisch, Dec 03 '15 at 20:24

score 21 · Accepted Answer · answered Dec 03 '15 at 21:01

21

Any ideas to what I am doing wrong

Not running tcpdump as root. On Yosemite and later, tcpdump captures on the "any" device by default, and setting up an "any" device requires root privileges - not just the ability to open the BPF devices.

answered Dec 03 '15 at 21:01

3

this is the answer, i.e. `sudo tcpdump` – Anentropic Sep 25 '18 at 14:32

score 2 · Answer 2 · answered Dec 01 '22 at 17:18

2

Run sudo tcpdump.

You have to run it as a root because of macos security.

answered Dec 01 '22 at 17:18

simPod

11,498
17
86
139

I am having issues with tcpdump in terminal

2 Answers2