How to use "su" to do a tcpdump on terminal on a mac


I'm taking a networking class taught in linux, and I'm using the terminal shell on my Mac at home to practice.

One assignment talks about tcpdump and asks us to first use the "su" command. When I do, I'm asked for a password. I don't know what password to use. Does anyone have any ideas how to find out what password to use?


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tcpdump is a privaleged command....

whoever maintains the machine has to provide you with a means to run tcpdump....

Is it your machine....?  You should have a way to log on as root....

When you say "terminal shell on my Mac" is tcpdump on your mac?

su asks for root's(superuser) password. Do You know it?
The root password is not standard -- what's the sense in having a password have to ask whoever configured the machine -- or boot single user mode and change it (but that might take a password).  If you have to ask, you probably shouldn't be doing this....

You should ask whoever came up with the assignment.

Note  tools like ethereal can analyze pcap files after their snooped.
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There is no root password by default, you have to set one.

sudo passwd root
<enter new password twice>
su -
<enter password you set>

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ask root password from Linux class people or ask them to give tcpdump permission to your user
kara334Author Commented:
Thank you. This was actually my own Mac, and a root password had never been set.

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