Need help with Lab 35.2
Hello,
I need help with lab 35.2 step 2.
Upon copying the ping utility as ping-x, I ran the ping-x utility as instructed in step 2. However, it did not reproduce the expected error message "ping: socket: Operation not permitted."
Please refer to screenshot below:
Answers
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hmm there does seem to be a problem. We'll investigate
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Investigating, looks like a couple of things.
Please verify step 1 worked and installed apparmor-profiles and apparmor-utils were installed.
Thanks
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Hello @lee42x,
I have verified step 1. It worked. Both apparmor-profiles and apparmor-utils were installed with the newest versions.
Below is the screenshot for reference:
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Hi cloud4amar, This is an interesting issue, the malfunction you are seeing seems to be Ubuntu related. I was testing and not making excellent progress on Ubuntu (various versions) so I took a clean LF-Debian.11 image and that seems to work exactly as we expect. The steps for my test are:
1. sudo which ping results /usr/bin/ping
2. student$ /usr/bin/ping -c 3 -4 127.0.0.1 results, completed ping successfuly
3. sudo getcap /usr/bin/ping results, /usr/bin/ping cap_net_raw=ep
4. sudo setcap -r /usr/bin/ping results, capability removed
5. student$ /usr/bin/ping -c 3 -4 127.0.0.1 results /usr/bin/ping: socket: Operation not permittedThis is what we want, then the rest of the lab should work. I will continue sort out what is up with Ubuntu and post an update later today.
Lee
1
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