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Troubleshoot port forwarding. Could it be ISP blocking incoming connections?

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http://serverfault.com – Had a new Axis IP camera delivered yesterday. Plugged into Cisco E2400 Wireless Router but having problems. Example topology: WAN IP: 10.10.10.10 (example) Cisco Router: 192.168.1.1 Axis Camera: 192.168.1.10:80 Port forwarding rules set up on router External Port: 999 Internal Port: 80 Protocol: TCP & UDP Device IP: 192.168.1.10:80 Enabled: True Trying to connect from within the lan to 192.168.1.1:80 from within browser - Works properly. Trying to connect from within the lan to 10:10:10:10:999 from within browser - Works properly. Trying to connect from outside the L (HowTos)

u85500's picture
Submitted by u85500 on 11/29/2012

Stories similar to Troubleshoot port forwarding. Could it be ISP blocking incoming connections?

I have one adsl modem/router which is not "top" of the line and it lack allot of options which I need. I was able to acquire one Cisco router recently which has all options that I need ( like DMZ, VPN, port forwarding, etc). I'm interested, if I connect the old modem/router to new Cisco router using bridge mode, will I be able to use all the features on the Cisco?

Greetings to all

Friends people with more knowledge than me ( and sense) can help to troubleshoot it. When one should try to connect to port 3306 of particular ip here e.g. 345.56.67.87 it should be redirected to port 3306 of internal machine. This is the scene : How can I access the particular port of the machine which is behind the router . i.e.

Home Net Topology

ISP/WAN > Modem > Router (linksys) >Router(CISCO 851W) > (serial cable) 2008 R2

I have the loopback cable connected from my server to the CISCO router. The router is connected to the router in the office with a crossover cable. It is connected to Lan port 4 (Linksys) and the cable is plugged in to the WAN port(CISCO).

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I have one machine (A) connecting directly to the internet, and another (B) connecting to the internet through a sky router.

If I listen for a connection on A, and connect to it with B, it works.

I'm having a bit of trouble understanding which networking solution to use for my problem:

I have a home network which includes several computers behind a router either directly through the router or through switches.

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Remote SSH login not working 1 year 15 weeks ago

I have a PC behind a router with port forwarding setup Port 22 for SSH which works perfectly - I can login and everything. What I am trying to do is let this PC connect to a VPN and only allow traffic on local network or via the VPN connection (for internet access). This is also working great. As soon as the VPN connection is broken, the PC has no connection to internet.

I have a regular Linksys wireless router. I'm doing port forwarding for an internal server. All goes well when I use external IP address of wireless router but no connection is established when I use FQDN instead of external IP address. My DNS works and I checked it by nslookup. That's so weird.

SSH and router port forwarding 41 weeks 5 days ago

Hi All,

SSH is timing out when I try to connect on my local system using my external IP/hostname. Using SSH from a remote system to the local system works, as does connecting using my local network IP.

I need to open port 8069 on external IP. from router point, internal-ip and port 8069 was set (to forward to that local ip). So it should be possible to connect from external-ip:8069 to internal-ip:8069? But for some reason it is not working. Locally I can connect to with internal-ip:8069 to openerp server (through browser or gtk client). Do I miss something?