This is strange and I am lost for words on it. I have worked a great
deal putting Red Hat Linux 7.0 and earlier on computers connected to
internal private networks and onto cable modems.
I am now working on building and networking a Red Hat 7.2 computer for
the company's new mail and web server. I have 6 Ip addresses
subnetted for the company. ANd on the inside network they run a class
A private addressing.
The external Real world IPs that I have are:
188.8.131.52 to 184.108.40.206 this is a /29 subnet which is
also have two more out side IPs 220.127.116.11 /30 to 18.104.22.168 /30
Inside uses a 10.10.10.1 to 10.10.10.254
The Linux box would be on the outside, currently on the 22.214.171.124
IP address. Its gateway is 126.96.36.199 - our ISDN router
the subnet is 255.255.255.252
dns on 188.8.131.52
I had two card in it, then took one out. Using 3com 3c905b cards.
With just the one netcard, I tried it on the 184.108.40.206 /29 network.
I could ping local host and ping the IP 220.127.116.11 but could not
ping the router or anything else. I installed rh 7.2 with "no
firewall" and I can not get it to see the Internet.
I even tried to put it inside our network on 10.10.10.17 and all
proper configurations for the internal network as I do with all the
windows machines. It did not like the 10.10.10.17 ip and also does
not like the /29 subnet with my 6 usable Ip addresses.
Any clues or suggestions?
I bet if I took it home to my cable modem and set it up, it would
Never seen anything like this.