tcpdump: no suitable device found

[mondal]

Hi All,

I am trying to run tcpdump command as root ,it is working fine . I want to give 'oracle' user
to run the command . I changed the permission of tcpdump command as -rwxr-xr-x . When I am running the command I am getting the below error.

nuh501:/home/root # /usr/local/sbin/tcpdump host nuh501
tcpdump: no suitable device found

[Jim Walls]

You can only run tcpdump as root because other users do not have permission to access the underlying network devices.

It is also good from a security perspective since it limits access to people with the proper authority to snoop network connections.

[Kapil Jha]

Reading packets from a network interface may require that you have special privileges:


You must be root or tcpdump must be installed setuid to root.


From Man page....

BR,
Kapil+

[mondal]

Hi All ,

Thanks for the information . If I am providing the user details and command alias
in /etc/sudoers file it will work?

[SoorajCleris]

It is not that the permission of the command .. but the data which it access.. still , may be need to check . Never run as non root.

Regards,
Sooraj

[Jim Walls]

Yes, you should be able to run it from a non-privileged login using sudo.