Exec () error

[james_cwy]

I have been trying to run p0f all this while and still am working on it.

I used this command:
exec('bash -c "exec nohup setsid /www/htdocs/main/testsystem/start-p0f.sh > /root/UMThesis/p0fout.txt 2>&1 &"');

Looked promising at first but I got this error and have no idea why it had happened.

• p0f
  p0f - passive os fingerprinting utility, version 2.0.3
  (C) M. Zalewski <[e-mail]>, W. Stearns <[e-mail]>
  [-] ERROR: pcap_open_live failed: socket: Operation not permitted

I have tried changing to nobody setting the special flags at all the files I think that I sould change but still get this error.

How do I solve this?
Hope someone can guide and advise me.

Thanks
James

[dalecosp]

This is definitely a permissions issue. In order to open a UNIX socket (and therefore run p0f), you must be root, and this script is not being run as root ... as least that's my best guess.

[james_cwy]

I think this should be the case.

Then what should I change to run as root?

Then shell script?, the p0f program?

Which files then should I change?

Any ideas?

Thanks
James

[dalecosp]

3 things I'd try....

1. Run the shell script from the command line as root.

2. Run the shell script from root's crontab.

3. Install "sudo(8)" and give that a try.