You say your router forwards port 5555 to port 80 on the pc, if that is
the case, then you need a rule to map port 80 on 192.168.1.71 to
192.168.70.140. Something like
iptables -t nat -A PREROUTING -i wlan0 -d 192.168.1.71 --dport 80 -j
DNAT --to 192.168.70.140
make sure that your FORWARD rule allows it through. You also probably
need to add this depending on your routing tables
iptables -t nat -A POSTROUTING -i wlan0 -d 192.168.70.140 --dport 80 -j
SNAT --to 192.168.1.71
to handle the reverse case and route the packets back out.
I'm half asleep so i'd test these fully first :)
John
--
www.pricegoblin.co.uk
On 11/04/2012 04:03, Al Grant wrote:
Hiya All,
I am after a little guidance please on the following problem:
My topology is as follows:
inet----router 192.168.1.254-------wlan0 192.168.1.71&& eth0
192.168.70.121------ip camera 192.168.70.140:80
Note:
(1) eth0 and wlan0 are on a PC running Ubuntu.
(2) Port 5555 on the router is forwarded to 80 on 192.168.1.71
(2) in sysctl I have set sysctl net.ipv4.ip_forward=1
Now what I need to do is to be able to access the IP camera from the inet.
So I have tried adding IPTables:
iptables -t nat -A PREROUTING -i wlan0 -d 192.168.1.71 -p tcp --dport
5555 -j DNAT --to 192.168.70.140:80
Now this should allow me to access the camera by pointing a web
browser to the real world public ip on port 5555, however I get page
cannot be displayed.
I have verified that:
1. That camera is accessable from the Ubuntu computer via web browser and ping
Various people have suggsted I may need to modify conntrack and others
have suggested I may need a second rule.
Can anyone please help?
Thanks in advance
AL
--
"Beat it punk!"
- Clint Eastwood
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