Below is network topology for our slip
connection to our remote warehouse.
2100 <-| ---(tu0) 10.10.150.30
3.2c |----(sl0) 10.10.150.25 <-slip-> 10.10.150.24 (sl0) ---|-> Linux
2.2.6
10.10.150.29 (eth0)---|
10.10.150.26 (ethernet)->W95 PC
On the linux machine, ipforwarding is turned on, with no filtering
so it "should" be forwarding all packets from sl0 <--> eth0. But it
doesn't seem to be doing so...The DEC machine is not functioning as
a router, but rather I setup static routes for the IP's I want to
use on the remote network (specifically 10.10.150.26).
On the DEC end.
default 10.10.1.1 UG 0 8539 tu0
10 10.10.150.30 U 37 452251 tu0
10.10.150.24 10.10.150.25 UH 2 23967 sl0
10.10.150.26 10.10.150.24 UGH 0 20 sl0
10.10.150.29 10.10.150.24 UGH 0 3 sl0
localhost localhost UH 6 17514 lo0
On the Linux end.
Destination Gateway Genmask Flags Metric Ref Use
Iface
default 10.10.150.29 255.255.255.255 UGH 0 0 0
eth0
10.10.150.30 10.10.150.25 255.255.255.255 UGH 0 0 0
sl0
10.10.150.25 10.10.150.24 255.255.255.255 UGH 0 0 0
sl0
10.10.150.26 10.10.150.29 255.255.255.255 UGH 0 0 0
eth0
localnet * 255.255.0.0 U 0 0 0
eth0
loopback * 255.0.0.0 U 0 0 0
lo
The PC, uses 10.10.150.29 as it's gateway with a 255.255.0.0 netmask.
all systems have recently (within 24hr) been rebooted.
Traceroute from the DEC to the PC on the Linux's ethernet
# traceroute 10.10.150.26
traceroute to 10.10.150.26 (10.10.150.26), 30 hops max, 40 byte packets
1 10.10.150.24 (10.10.150.24) 187 ms 180 ms 180 ms
2 *
What I can do..From the DEC. I can ping 10.10.150.24 & 10.10.150.29 (the
sl0 & eth0 addresses of the linux machine). From the Linux machine, I
can ping 10.10.150.25 & 10.10.150.30 (the sl0 & tu0 address of the DEC
machine). From the remote PC, I can ping 10.10.150.24 & 10.10.150.29
(the
sl0 & eth0 addresses of the linux machine).
When I ping the 10.10.150.26, I can see the TD light blinking on the
modem
so I know it's using the sl0, but it never gets replies. :(
Just as when I ping 10.10.150.30 (or 10.10.150.25) from the PC, I get
request timed out.
What my end result I want to have work is, have the Linux machine
forward
all packets from it's sl0 <--> eth0 and the DEC NOT forward from it's
sl0
to it's tu0 (for security reasons). I don't need ip masq, as the remote
network will never see the internet, just the DEC.
Is there anything drastically wrong, esp on the DEC end?
Thanks
George Gallen
ggallen_at_slackinc.com
Received on Thu Aug 26 1999 - 15:28:24 NZST