Solved

Why is my Zywall-2 firewall behind a cable modem with static ip adress failing to connect to internet?

Posted on 2009-05-05
1
339 Views
Last Modified: 2013-12-14
Hello,

As stated in the title, I am unable to connect to the internet through my Zywall 2 Firewall behind a cable modem.

I switched from an ipcop firewall installed on an old computer to the Zywall last saturday. Connection worked fine with static ip with ipcop and also with the ZyWall until monday 5pm.
 The firewall is at a remote office I couldn't reach it remotely via https. I went on site this morning and couldnt log into it from the lan so I reset it to factory defaults and reconfigured it the same way but it fails to connect to anything. Can't ping outside, it doesn't synch with NTP, etc...I checked and re-checked the settings.

Now if I set the WAN connection of the firewall to DHCP, I get an ip adress and the connection works fine. I have contacted the ISP who is telling me everything is ok on their side and that it should also work with the static ip. I also noticed that the wan led on the firewall keeps blinking really fast and never stops even when changing wan settings from static to DHCP. But still it doesn't work with my static ip.

My setup is simple and as following :

Cable Modem

Zywall 2 Firewall
LAN 192.168.1.1 static
WAN 2xx.xxx.xxx.xxx static
SUBNET 255.255.255.192
GATEWAY 2xx.xxx.xxx.xxx
DNS 2xx.xxx.xxx.xxx
DNS2 2xx.xxx.xxx.xxx

Windows 2003 SBS with Exchange server
DNS, DHCP
192.168.1.2 static

Thanks in advance,
gert
0
Comment
Question by:gertdesmet
1 Comment
 

Accepted Solution

by:
gertdesmet earned 0 total points
Comment Utility
Just got a call back from a technician at the ISP who told me its an issue with their modem cable and zyxell firewalls...... Something about the mac adress not beeing recognized by the zyxel. He did something on their side, I restarted the Firewall and it worked right away.

Sorry for bothering :)

gert
0

Featured Post

How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

Join & Write a Comment

I found an issue or “bug” in the SonicOS platform (the firmware controlling SonicWALL security appliances) that has to do with renaming Default Service Objects, which then causes a portion of the system to become uncontrollable and unstable. BACK…
Sometimes you have to pull out old tricks to get a new firewall to work… While we were installing a new Sonicwall at a customers site we found that sites they were able to visit before were not working.  It seemed random and we could not understa…
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…

772 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now