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
345 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 

Accepted Solution

by:
gertdesmet earned 0 total points
ID: 24304116
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

Secure Your Active Directory - April 20, 2017

Active Directory plays a critical role in your company’s IT infrastructure and keeping it secure in today’s hacker-infested world is a must.
Microsoft published 300+ pages of guidance, but who has the time, money, and resources to implement? Register now to find an easier way.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Fortigate 100D NTP Issue 4 150
Sporadic connectivity issues 6 71
setting up a wifi network with public access for a restaurant 4 80
NAT on Fortigate 2 12
In this tutorial I will show you with short command examples how to obtain a packet footprint of all traffic flowing thru your Juniper device running ScreenOS. I do not know the exact firmware requirement, but I think the fprofile command is availab…
    Over the past few years, small business and home owners have become so dependent on internet that a need for redundancy has arisen.    What happens when your small business or home / home office loses its internet connection?  The results c…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
Are you ready to implement Active Directory best practices without reading 300+ pages? You're in luck. In this webinar hosted by Skyport Systems, you gain insight into Microsoft's latest comprehensive guide, with tips on the best and easiest way…

749 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