Re: WEB CGI TCPDUMP

This is likely a permissions problem, not a tty problem. The user your webserver is running your script as does not have the permissions to read raw network data from the network card. On unixish systems, traditionally only the root user account is allowed to do so, so you might have to find a way to communicate to the sniffing process that runs as root.

Comment on Re: WEB CGI TCPDUMP Select or Download Code

Replies are listed 'Best First'.
Re^2: WEB CGI TCPDUMP by adismaug (Acolyte) on Jul 16, 2009 at 09:48 UTC
the script is running as user apache, how can i change that?	[reply]
Re^3: WEB CGI TCPDUMP by Corion (Patriarch) on Jul 16, 2009 at 10:29 UTC
You don't want to change that, seriously. Running any program as `root` is a potential security risk for the machine and other machines in the same network. Running a program that is accessible via the network as `root` is a recipe for certain disaster. Ask your security person or your system administrator about what options are available to you. I'm not exactly sure what benefit running `tcpdump` via CGI over the network has for you over simply running `tcpdump` via a `ssh` login. But if you're convinced that CGI is a must, I recommend having a cron job or daemon program that runs `tcpdump` as root and writes the output to a known, fixed location. Potentially you can submit new jobs to that program by writing a file with the job parameters to a known location where the daemon program picks them up.	[reply] [d/l] [select]