1. cyberghost01/16/2012 05:05:31 AM
Homepage: http://bestvpnservice.com/providers/61/cyberghost_vpn.html

We use TZ170. My computer is Windows 7 64-bit with Client 4.2.6.0305.
My VPN connection would work with the ethernet cable plugged in, but not over wifi
I went to the network adapter settings, from the Network and sharing center, and found that I had two wireless adapters. One of them was connected to a wifi network, and the second one was disconnected. I have disabled this second one, and right away, the VPN client started to work.

2. Jono07/21/2011 04:04:47 AM

I know this is an OLD thread, but I have had the same problem and I'm using a Netgear FR114P.
I fixed it by unchecking the option to "Drop Fragmented IP Packets" on the firewall.
Hope this helps anyone that stumbles across this in the future!

3. Mani09/01/2009 06:58:57 PM

My system is behind sonicwalll. I am trying to use a software to send efaxes. I think my sonicwall is restricting me form sending faxes. please suggest what need to be checked

Mani

4. Frank Kjaer 07/11/2008 09:52:36 AM
Homepage: http://www.dkfrrakja.dk

Hi
I have same problem with a Phillps router trying to connect to the SonicWall via the VPN client. The log just keep saying :
"An incoming ISAKMP packet from "IPadress" was ignored."
"The peer is not responding to phase 1 ISAKMP requests."
Change the Phillps router to Linksys - Works fine.
SonicWall shoud drown in coffee...

5. Nikola02/14/2008 04:46:15 AM

I have similar problem. I'm trying to connect to remote Sonicwall VPN router from our corporate network which is behind NETGEAR Firewall/router. I have this error in the SonicWall VPN Client
"The peer is not responding to phase 1 ISAKMP requests."
I've tested the client form another computer that is connected directly to the internet and has real static IP and no firewalls behind. It works perfect. So I concluded that the problem is with NETGEAR's NAT or ... I don't know.

6. Jon12/09/2007 09:58:47 PM

If you are still trying to use the client through your Sysgate firewall try disabling NAT Traversal in the client!

7. Ken Yee06/11/2007 01:53:19 PM
Homepage: http://www.keysolutions.com/blogs/kenyee.nsf

Steve: no other clues. Other folks had a similar problem on SonicWall's forums, but no one had an answer. I'll chalk it up to crappy programming
I worked around my issue by punching a hole through the SonicWall firewall and setting up a Linux OpenVPN server on the other end of the hole. At least that's a standard IPSEC server

8. Steve Riggins06/11/2007 06:22:14 AM

I have a problem with SonicWall and Apple's Airport N Router - same issue, blocked at phase 1 ISAKMP. However it works with my linksys WRT54GS.

Any more clues on this problem?
steve at geeksrus dot com

9. Fred Welsh03/27/2007 06:13:34 PM
Homepage: http://nationwidevpn.com

I'm sorry Evan but I do not know how to solve your problem other than either switching the Checkpoint firewall or Sonicwall firewall, to get the VPN to work.
<a href="{ Link } Nationwide VPN</a>

10. Evan03/08/2007 09:20:03 AM

We're trying to set up a VPN between our client and us; we have a Sonicwall firewall, they have a Checkpoint one. We've had trouble making this systems get along because of the idiosyncrasies of setting up via these two firewalls. Anyone have any experience making this work?