Question about Cyberguard SG300 (00852503000366) Firewall

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Need to network SG300 Firewall and Qwest (Motorola) 3347-02 Modem

I need some help getting an SG300 Firewall/VPN and a Qwest 3347-02 Modem to play nicely with each other.

Currently the modem has an external static IP (192.168.0.12) and also has an internal IP on our local network (let's say 10.10.1.1). The Firewall is setup with an internal IP of 10.10.1.2 (for example).

How do I configure the modem to forward all the traffic to the Firewall?
How do I configure the firewall to see out to the internet?

Please help - I need the assistance of your wonderful network savy brains. Many thanks!!

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The modem needed to be set to a 192.168.x.x network, and the SG300 Firewall WAN port needed to be set to a dummy IP on the same network for it's IP, and the specific 192.168.x.x address for the gateway and DNS.

Posted on Nov 11, 2008

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If your home / business connection is a 20mb but your VPN is a 1MB connection, then your speed is going to be less then 1mb once you connect through the VPN.

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192.168.1.X is a local ip address ,, i trust that thhe vpn is in seperate places and is done with the wan ip over an internet connection?????

OK maybe the problem isnt on your side but the main office building,, when connecting , have someone looked for repeated attemps to connect by observing the fire wall,, if it appears to be blocked byu the firewall simply diasable any and try it out.. If it works then all you need to do is set the firewall correctly..

I was reading the ip address in your original post and those are local address,s are you certin the VPN is correct ???? did you use the correct STATIC IP ADDRESS ASSIGNED BY YOUR ISP??

Jan 20, 2008 | Cyberguard SG300 (00852503000366) Firewall

1 Answer

Hello. It appears my router is blocking VPN access to the office server. I can connect using the ethernet cable so have isolated the problem to the router firewall. How do I get around this? Thanks


Hi
I will make a couple of assumptions on you setup. First, you have some type of highspeed internet. You have a retail type router/firewall plugged into your internet modem. You are using a VPN Client software installed on a PC or Laptop. By stating that when you connected using your Ethernet cable, you were plugged directly into the Internet modem.

Basically, what you have here is a configuration issue with your Router/Firewall. I use the Cisco VPN Client Software from home. This software uses UDP over TCP port 10000. Your VPN Client will use something along this line as well. So, you need to do one of two things here. Determine what Protocol and Port your VPN software uses. Login into you Router/Firewall and add that to your outbound allowed traffic. Or login into your Router/Firewall and configure it to allow all outbound traffic.

If you are not sure how to do this, the documentation that came with your Router should contain a Tech Support number to call. They can walk you through this in short order. Otherwise, post your EXACT make and model of your Router/Firewall and I will try to get the information for you.

Hope this helps.
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Cable modem connection keeps repeating checking and then down over and over, tried a different router works fine, tried a different modem same issue


I had a similar problem a while back when I bought a new cable modem. I didn't realise that my cable provider needed to have the serial number of my cable modem configured on their system.

I ended up calling them to ask them about the problem.

There is no way I could have solved it without calling them.

I think it is to do with stopping unauthorised users from connecting to the cable.

I remember they wanted my name, age and grandma's inside leg measurement before they would help me.

So if you have nothing to hide just give them a ring and make them help you. This is what you pay them for after all.

:)

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Locked out of HTTP inside port on SG300 - telnet works


I was unable to supply a link to the manual for this product so I downloaded it to one of my sites to make it available to you. Here is the link:

http://www.dscmain.com/snaplink/sg_314_ug_revA.pdf

Please let me know if this helps...
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Feb 12, 2008 | Cyberguard SG300 (00852503000366) Firewall

1 Answer

Cyberguard SG300


From the main configuration screen select Network Setup, and then click on the Connections Tab. In the tabline below that click on Aliases.

At this point you input the Alias IP address and the netmask and add it, selecting port 25. The firewall now knows that it is to forward all traffic on port 25 to the computer that has the IP address you put in.

You should be aware that doing the above opens a direct access point into your network! Port 25 is the port used for SMTP (Sendmail) and it is the most vulnerable and most hacked service on the Internet! You should seriously consider not doing this.

A better option would be to goto the DMZ tab and configure a DMZ net on your firewall - you will need to obtain a second routable IP address from your ISP to do this though. By creating the DMZ and then routing port 25 to a machine inside the DMZ you isolate the machine running SMTP from all of the other machines inside your protected network and so make a compromise much less likely.

All of the systems inside your protected network will still have demand access to the machine in our DMZ, but the machine in your DMZ would be unable to initialize access to the protected network, which is a much safer setup.

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