Cisco Systems VPN dial connects, but does not work

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Subject Author Date
VPN dial connects, but does not work walterbyrd 05-29-08
Posted by Merv on June 5, 2008, 3:32 pm
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Are you using a Cisco VPN client - if so what version ?

Do you know what the equipment that you connect to a t the other end
is ?

If you are getting a succesful connection then your PC should be given
an IP address assignment by the VPN server - depending on the VPN
lcient you should be able to display that

Also you should tale a lookat your PC routing table before and after
making the VPN connection using the DOS cmd route print - you should
see that the default route changes after the connection is made - is
that occuring


Posted by walterbyrd on June 19, 2008, 3:46 pm
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Similar problem, different VPN client. I am now trying Juniper's VPN
client. This time, I can not even log in.

I am told I need to have port 500 open. But I am using comcast, and
that port seems to be closed. I downloaded a free utility called
"Advanced Port Scanner 1.3." According to this utility, the only
ports I have open are: 25, 80, 135, 139, and 445.

I called comcast, and comcast assured me that comcast does not block
VPN traffic. Comcast told me that the only ports that comcast blocks
are 67, 68, 135, 137,138,139,445,512,520,1080.

I tried telnetting to port 500, and got this:

>telnet localhost 500
Connecting To localhost...Could not open a connection to host on port
500 : Connect failed

Posted by News Reader on June 19, 2008, 5:26 pm
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walterbyrd wrote:
>
> I tried telnetting to port 500, and got this:
>
>> telnet localhost 500
> Connecting To localhost...Could not open a connection to host on port
> 500 : Connect failed

Walter:

Keep in mind that I'm only seeing your post, and not those preceding it
(deleted per my subscription settings).

Is the result not what you would expect given that ISAKMP is on "UDP"
port 500, and Telnet uses TCP?

TCP port 500 would not be open.

Best Regards,
News Reader

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