Process in jail can use netstat to see connection

Jens Kasten <[email protected]>
Newsgroups gmane.linux.rsbac
Message-ID <[email protected]>
Hi list,

I was writting a small script to check if a service alive.
Copy to the server and put in the crontab.
Then I got an email that the service in my case ssh is not running.
Looking but was running.
Ah ok cron is running in a rsbac_jail.
So with ps, lsof or others only stuff from cron can seen.
But when i put netstat in the script an let cron execute it I see all 
like connection.
For my sufficient to check if the ssh is running, but after pgrep or ps 
fails
I was expected that netstat also fails.

This is my jail setup.
|Jail ID: 165| Program: cron| PID: 3899| Jail IP: 0.0.0.0
|Jail Flags: allow-external-ipc, allow-dev-get-status, allow-dev-read, 
allow-dev-mod-system, allow-inet-raw, allow-all-net-family, 
allow-dev-write
|Jail SCD Get: sysfs
|Jail SCD Modify: priority, rlimit, mlock

Deliver netstat a result because of (allow-inet-raw, 
allow-all-net-family)?


-- 
Mit freundlichen Grüßen

Jens Kasten


http://www.kasten-edv.de
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