Potential Firewall or NAT Loopback Issue?

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bigwophh
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Joined: 13 Nov 2013
Posts: 1

PostPosted: Wed Nov 13, 2013 18:11    Post subject: Potential Firewall or NAT Loopback Issue? Reply with quote
I’m having a strange problem and am hoping someone can help. I’ve got a Linksys WRT610N running with this firmware:

DD-WRT Kong Mod USB/FTP/SAMBA3/OpenVPN/Proxy Build 20500

I have a few ports being forwarded to a couple of webcams and a DVR system on the network, at IP addresses 192.168.1.23 / .25 / and .141.

When I try to access the webcams or DVR from the outside world, everything works fine.

When I try to hit the devices from the internal network, however, I can’t connect, whether I type their local IP addresses into the browser or if I use their DDNS addresses.

I CAN connect to other local IP addresses, though.

It seems that I can’t connect to any local IP addresses, that also have ports being forward to them.

Any ideas?
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phuzi0n
DD-WRT Guru


Joined: 10 Oct 2006
Posts: 10143

PostPosted: Wed Nov 13, 2013 21:41    Post subject: Reply with quote
Sounds like the devices themselves are blocking access from the local network.
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