Networking Question Ip Range

[shanenin]

I have this line in my /etc/exports. this will allow all ips in my local network

/mnt/media   192.168.1.0/255.255.255.0(rw,no_root_squash)

I want to add a range of addresses in the 5. range for example, 5.18.152.214

how would I include all address starting with 5.18, or even just with 5

would this work

5.18.0/255.255.255.0

and this

5.0/255.255.255.0

edit added later//

I tried those and they did not work. I am sure they obviouly show I have no understaning of cidr. it does give you the idea of what I need to do

Edited February 1, 2006 by shanenin

[shanenin]

I noticed the subnet mask is differnt then my nomal one

ham0	  Link encap:Ethernet  HWaddr 2A:A3:28:3D:A0:CF
		  inet addr:5.18.152.214  Bcast:5.255.255.255  Mask:255.0.0.0

Edited February 1, 2006 by shanenin

[CataclysmCow]

You need to change your masks and it wouldn't be a bad idea to fill out the netID (some apps handle it, some don't).

So your 5.18.0/255.255.255.0

should be 5.18.0.0/255.255.0.0

In CIDR notation that would be 5.18.0.0/16 (or just 5.18/16)

Your 5.0/255.255.255.0

should be 5.0.0.0/255.0.0.0

In CIDR it would be 5.0.0.0/8 (or just 5/8)

Edited February 1, 2006 by CataclysmCow

[shanenin]

Thanks alot :-)

I think I am following your pattern(not really understanding the concepts) , so then this should work for a class c network

so to specify all ips starting with 192 would either be

192.0.0.0/255.0.0.0

192.0.0.0/8 (using CIDR)

then for a specifing all ips in a class c network that start with 192.168 would be

192.168.0.0/255.255.0.0

192.168.0.0/16 (using CIDR)

Edited February 1, 2006 by shanenin

[CataclysmCow]

Yes, your subnet definitions are correct, but you typically don't have 8 or 16 bit masks on Class C assignments (Class C would use /24 or higher). Classfull addressing isn't used anymore so you can pretty much just ditch the term altogether.

Edited February 1, 2006 by CataclysmCow