Re: my lame attempt at a shell script...

[Eric F Crist]

A couple more questions, then I'm done. Promise.

I need to verify whether or not there is an entry for grog_firewall_oif and grog_firewall_iif in /etc/rc.conf. If not, I want to exit with an error.

Also, a little more advanced, I need to pull information from an ifconfig output. I need to pull network numbers for both the internal interface, as well as external interface. For example,

vr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 192.168.1.5 netmask 0xffffff00 broadcast 192.168.1.255
        inet6 fe80::20e:a6ff:feb9:2d3d%vr0 prefixlen 64 scopeid 0x3
        ether 00:0e:a6:b9:2d:3d
        media: Ethernet autoselect (100baseTX <full-duplex>)
        status: active

I don't actually need my own address, I need to be able to figure out that the system, based on the above output, is on the 192.168.1.0/24 network. This will be input into my firewall rulesets.

I imagine that there's a util or command around that can do this, or I can code out the math, but there's got to be an easier way.

Thanks again.
_______________________________________________________
Eric F Crist                  "I am so smart, S.M.R.T!"
Secure Computing Networks              -Homer J Simpson

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