Hi,
I've just had a set-top box installed (by NTL) to give me a broadband
connection, but I'm clearly out of my depth.
My set-up is
+---------------+ +----------------+ +-------------+
| my net | +-----+ | firewall | | NTL |
| 192.168.0.x |--| hub |---| eth0 | | |
| (several) | +-----+ | 192.168.0.254 | | |
+---------------+ |================| | |
| eth1 |-------| |
| e.g.10.64.14.5 | +-------------+
+----------------+
My own network is working fine - all the boxes talk to each other, using
/etc/hosts for name lookups. The firewall is running LFS-3.3.
My connection to NTL is using dhcp (I'm running dhclient-3.0pl1). I get
assigned an address (10.64.14.5 at the moment) when I bring up the
interface and I can see the lease data in
/var/state/dhcp/dhclient.leases being updated at intervals. This same
file shows the router is 10.64.14.1 and the dhcp-server is 10.0.138.70 .
The first stage of making the connection usable is to register with
NTL. Stuff on google suggests that all http requests are diverted to the
sign-up server at this point, for a page start.html. I tried to use lynx
to get this page, but it failed. Examination shows that I cannot ping
any of the NTL addresses from the firewall. I'm using iptables, so I
cleared out all the tables and re-enabled ip-forwarding in case the
firewall script was the problem (I'm guessing this is safe for the
moment because of the lack of connectivity).
The routing table from netstat -rn shows
Dest Gateway Genmask Flags MSS Window irtt Iface
192.168.0.0 0.0.0.0 255.255.255.0 U 40 0 0 eth0
10.64.14.0 0.0.0.0 255.255.255.0 U 40 0 0 eth1
0.0.0.0 10.64.14.1 0.0.0.0 UG 40 0 0 eth1
If I try to ping 10.64.14.1 (or any other NTL IP) I get
root@mybox~# ping -c 2 10.64.14.1
PING 10.64.14.1 (10.64.14.1): 56 octets data
--- 10.64.14.1 ping statistics ---
2 packets transmitted, 0 packets received, 100% packet loss
If I try to ping 10.64.14.255, only my firewall (10.64.14.5) responds -
even if I give it a bigger count (on the internal network, only one box
responds for counts of 1 or 2, but they all respond for counts of 5 or
more).
I'm hoping this is something fairly obvious. Any suggestions, please ?
Ken
--
Out of the darkness a voice spake unto me, saying "smile, things could be
worse". So I smiled, and lo, things became worse.
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