Hi,
I new to this list and probably making a stupid mistake but after trying (and reading the docs) for 2 days I'm desparate to get this working.
This is what I want :
|--------------| |------------------|
|---------| 192.168.0.33 |embedded | 10.x.x.x 10.x.x.x. |host |
|webcam |----------------------|router |-----------------------------| |
|---------| 192.168.0.13 | |ppp0 gprs | |
eth0| -------------| |------------------|
I want to 'transparent' reach the webcam through the grps connection from the host, on the embedded box I use the rules :
iptables -t nat -A PREROUTING -i ppp0 -p tcp -d <ppp0 ip> --dport 80 -j DNAT --to 192.168.0.33:80
iptables -A FORWARD -i ppp0 -o eth0 -p tcp -d 192.168.0.33 --dport 80 -j ACCEPT
With this setup I can see traffic, by led indication on the webcam, if I request http://<ppp0 ip> from the host. Unfortunatly packets aren't coming back. I tried MASQUERADING rules and SNAT but no suc6 either.
my embedded box settings :
root@openembedded:~# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
127.0.0.1 * 255.255.255.255 UH 0 0 0 lo
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
10.0.0.0 * 255.0.0.0 U 0 0 0 ppp0
default 10.7.20.6 0.0.0.0 UG 0 0 0 ppp0
root@openembedded:~# ifconfig
eth0 Link encap:Ethernet HWaddr 00:11:22:56:42:AB
inet addr:192.168.0.13 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:794 errors:1 dropped:1 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:65934 (64.3 KiB) TX bytes:508 (508.0 B)
Interrupt:7 Base address:0x300lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)ppp0 Link encap:Point-Point Protocol
inet addr:10.7.20.6 P-t-P:10.6.0.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:51 errors:0 dropped:0 overruns:0 frame:0
TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:3786 (3.6 KiB) TX bytes:3642 (3.5 KiB)and finally :
root@openembedded:~# iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination
Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT tcp -- anywhere 192.168.0.33 tcp dpt:www
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
root@openembedded:~# iptables -L -t nat
Chain PREROUTING (policy ACCEPT)
target prot opt source destination
DNAT tcp -- anywhere 10.7.20.6 tcp dpt:www to:192.
168.0.33
Chain POSTROUTING (policy ACCEPT) target prot opt source destination
Chain OUTPUT (policy ACCEPT) target prot opt source destination
Please let me know if this setup should work, I'm starting to doubt everything including my own sanity...
thanks,
Jeroen
