Date: Mon, 3 Jan 2005 17:28:56 -0600 From: Eric F Crist <ecrist@secure-computing.net> To: Paul Schmehl <pauls@utdallas.edu> Cc: FreeBSD-Questions Questions <freebsd-questions@freebsd.org> Subject: Re: my lame attempt at a shell script... Message-ID: <3D1AE682-5DDF-11D9-B56F-000D9333E43C@secure-computing.net> In-Reply-To: <7C6BEBEDE2DB4AC7E55D6843@utd49554.utdallas.edu> References: <06DDB71C-5DB4-11D9-B56F-000D9333E43C@secure-computing.net> <15416223037.20050103193803@hexren.net> <6074EB8D-5DC6-11D9-89A5-000D93AD26C8@tntluoma.com> <F0BE3E23-5DC8-11D9-B56F-000D9333E43C@secure-computing.net> <41D9BA53.4060105@locolomo.org> <2DF07A46-5DD2-11D9-89A5-000D93AD26C8@tntluoma.com> <D7D0CFB3-5DD5-11D9-B56F-000D9333E43C@secure-computing.net> <3E8DD18E8557227C2A3C8E5A@utd49554.utdallas.edu> <AB283AB4-5DD9-11D9-B56F-000D9333E43C@secure-computing.net> <7C6BEBEDE2DB4AC7E55D6843@utd49554.utdallas.edu>
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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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