>From note 2 your router is forwarding port 5555 to port 80 on the PCs' wlan0. But your rule on the pc again forwards from 5555 to the camera. But by now your dport would 80 not 5555. try correcting this or just adjust your router to forward straight to the camera ------Original Message------ From: Al Grant Sender: netfilter-owner@xxxxxxxxxxxxxxx To: netfilter Subject: IPTables Sent: Apr 11, 2012 5:03 AM 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 -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html ÿôèº{.nÇ+?·?®??+%?Ëÿ±éݶ¥?wÿº{.nÇ+?·§z×â?׫þ)í?æèw* jg¬±¨ ¶????Ý¢jÿ¾«þG«?éÿ¢¸ ¢·¦j:+v?¨?wèjØm¶?ÿþø ¯ù ®w¥þ?àþf£¢·h??â?úÿ?Ù¥
