I did a perfect build of CentOS 6 for ISPConfig 2 on my LAN (192.168.10.0/24) and then moved the server to my WAN (23.XXX.YYY.160/29) and changed all of the appropriate files. The server works fine on the WAN, but there is no connectivity within MY tiny little /29 subnet. In my case, my firewall/router has a public IP of 23.XXX.YYY.162/29 My webserver has a public IP of 23.XXX.YYY.165/29 Both share a gateway of 23.XXX.YYY.161/29 If I ping my firewall/router (it is pingable) from WAN, I get replies. If I ping my webserver from WAN, I get replies I can not ping my firewall/router from webserver or vice-versa! This means I have to go somewhere else to use my own webserver! HELP? ifcfg-eth0 Code: DEVICE=eth0 HWADDR=00:13:21:6a:21:fb NM_CONTROLLED=yes ONBOOT=yes IPADDR=23.XXX.YYY.165 BOOTPROTO=none NETMASK=255.255.255.248 GATEWAY=23.XXX.YYY.161 NETWORK=23.XXX.YYY.160 DNS2=8.8.4.4 TYPE=Ethernet DNS1=8.8.8.8 IPV6INIT=no USERCTL=no Code: [root@web1 network-scripts]# netstat -r Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 23.XXX.YYY.160 * 255.255.255.248 U 0 0 0 eth0 link-local * 255.255.0.0 U 0 0 0 eth0 default 23-XXX-YYY-161. 0.0.0.0 UG 0 0 0 eth0 Code: [root@web1 ~]# ping 23.XXX.YYY.162 PING 23.XXX.YYY.162 (24.156.121.162) 56(84) bytes of data. From 23.XXX.YYY.165 icmp_seq=2 Destination Host Unreachable How can it be unreachable! I shouldn't even need to have a router to send pings back and forth between two IP's on the same subnet!
