my lame attempt at a shell script...
Eric F Crist
ecrist at secure-computing.net
Mon Jan 3 15:29:18 PST 2005
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
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
media: Ethernet autoselect (100baseTX <full-duplex>)
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.
Eric F Crist "I am so smart, S.M.R.T!"
Secure Computing Networks -Homer J Simpson
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