I keep trying to port forward through my TZ300 on my Xfinity home modem that is set to bridge mode, but I am unable to.
I”ve tried multiple times and gone through the wizard and all that, but I can never get it to port forward.
I”ve contacted support from xfinity and they said that the bridge mode will not block ports, so maybe i”m doing something wrong?
Is there a step-by-step for my kind of setup that differs from the normal setup?
OK, I figured it out.
I completely re-formatted my xfinity modem and started from scratch.
Went through and found that for port forwarding to work you have to go through and disable the firewalls by clicking the very small bottom check box that says to disable it. Which is apparently not the same as setting it to bridge mode, which is supposed to disable the firewall as well.
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Then after doing that on both the IPv4 and IPv6 firewalls you set it to bridge mode.
Then, and only then, does it work as it”s advertised to work.
Special thanks toBecauseI”mGood for helping me through this.
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May 17, 2019 at 08:49 UTC
I don”t like the sonicwall wizards because the names they create are less than helpful when you have a lot of NATs and exceptions.
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Apologies if this is basic but I always find checking the basics is the best place to start when troubleshooting
Check what your external IP Address is actually by browsing to https://www.whatsmyip.org/
There should be no problem if you are using a modem on the outside of your sonicwall.
Create your Internal Address Object
1: Make sure your internal host is on a fixed IP address either within the OS or by DHCP Reservation
2: Name is something sensible to you and how you run the network The host name works for me if it is just a piece of hardware or a VM. If a clustered service IP then maybe reference that instead
3: Zone = LAN
4: Type = Host
5: IP Address = the IP address of the host we are referencing
Your External Address Object will normally be X1 IP. Check it is correct or if there is a different reference or it is on a different port
Custom Service Object
1: Name: Once again something clear and maybe put the port number in the name if it is not a standard protocol port (Makes it easier for searching)
2: Check the protocol is correct (Usually TCP)
3: Set the port range (e.g. Single Port 1999-1999)
1: Check it is WAN to LAN
2: Ensure the destination is the external IP address (whichever object) references this in your setup, I assume you have a fixed IP address?
3: Ensure the service object matches the traffic type TCP,UDP and port number
4: Check the action is Allow 🙂
1: Original Source should be either “Any” or whichever restricted set of IP addresses you want to allow connections from
2: Translated Source = Original
3: Original Destination = External IP Address Object (X1 IP) ?
4: Translated Destination = your internal Target IP Address Object
5: Service Original = Your Service Object
If all this is done correctly and checked then check if there is any firewall enabled on the target host and make sure that traffic from the internet is allowed inbound