Hi, short NW course: every IP-NW has a NW-Address (the first one) and a broadcast (the last one) the mask defines the NW-size Mask: ff.ff.ff.0 class C, size 256 adresses (hex) => xx.yy.zz.0 network adress => xx.yy.zz.1-254 usable host range => xx.yy.zz.255 broadcast adress If you use anoter mask the range shift, but usable are always net+1 till broadcast-1 for exact infos see www.rfc-editor.org georg PS: the nework mask sometimes is written as /n i.e 255.255.255.0 =^= /24 (nr of nw-bits) -----Ursprüngliche Nachricht----- Von: Victor R. Cardona [mailto:vcardona@covad.net] Gesendet: Dienstag, 09. März 2004 00:56 An: suse-security@suse.com Cc: suse-slstd-e@suse.com Betreff: Re: [suse-security] Gateway / netmask Scott Wrobel wrote: | | I am seting up a network with a linux server and have been informed that the following netmask and gateway numbers are incompatable with each other, now i am a little confused about what i should change the last section of the gateway # to in order to make the network work better. | Current Gateway: 192.168.1.255 | Current Netmask: 255.255.255.0 | any advice will be apreceated. 192.168.1.255 is the network broadcast address. Your gateway should use an IP address between 192.168.1.1 and 192.168.1.254. The netmask is correct. Victor -- Check the headers for your unsubscription address For additional commands, e-mail: suse-security-help@suse.com Security-related bug reports go to security@suse.de, not here