I have a problem with LAN configuration on linux (Red Hat 7.2).
I had applied istruction of my linux guide, but I have note a right result
I have 1 server and 2 clients for my home LAN.
I had configured manually follows files (on server):

/etc/hosts
#Do not remove the following line, or various program
#that require network functionality will fail.
127.0.0.1 localhost loopback
192.168.1.0 server.riv66.com server
192.168.1.11 pos1.riv66.com pos1
192.168.1.12 pos2.riv66.com pos2
/etc/host.conf
order hosts,bind
multi on
/etc/resolv.conf
domain riv66.com
search riv66.com
name server 192.168.1.0
When I try to ping from server:
[root@server root]# ping -c 3 pos1
PING pos1.riv66.com (192.168.1.11) from 192.168.1.0 : 56(84) bytes of data.
From server.riv66.com (192.168.1.0) : Destination Host Unreachable
From server.riv66.com (192.168.1.0) : Destination Host Unreachable
From server.riv66.com (192.168.1.0) : Destination Host Unreachable

--- pos1.riv66.com ping statistics ---
3 packets trasmitted, 0 packets received, +3 errors, 100% packets loss
I had configured pos1's firewall to receive all ICMP packets.

When i ping from client:
[root@pos1 root]# ping -bc 3 server
WARNING: pinging a broadcast address
PING server.riv66.com (192.168.1.0) from 192.168.1.10 : 56(84) bytes of data.
Warning: time of day goes back, taking countermeasures.
64 bytes from 192.168.1.10: icmp_seq=0 ttl=255 time=1.353 msec
64 bytes from 192.168.1.10: icmp_seq=1 ttl=255 time=84 usec
64 bytes from 192.168.1.10: icmp_seq=2 ttl=255 time=77 usec

--- server.riv66.com ping statistics ---
3 packets trasmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/mdev = 0.077/0.504/1.353/0.600 ms
but, when i try to telnet from client to server:
[root@pos1 root]# telnet server
Trying 192.168.1.0 ...
telnet: connect to address 192.168.1.0: Network is unreachable
How is possible?

Please help I cannot configure my LAN.
I have spent many time for that, with bad results.
Thanks