No VPN connection get errors:721 and 800

Greetings Everyone,
I have SBS 2003 Standard Edition. The server has two nic's for NAT on the
RRAS. One nic is for an External IP address of 192.168.1.10 and the other
nic is for an internal IP address of 192.168.16.2. The router is a linksys
WRT54G3 that gets the DHCP address resolved by TZO.com to a friendly name
for all services to the IP address without any problems except the VPN
connection. I keep getting errors:721, or 800 when attempting to connect
with XP Professional machines. I have all of the following Ports forwarding
to the External nic 192.168.1.10, these are the settings 25 SMTP TCP,80
http,110 pop3,443 https, 500 ipsec,1723 PPTP,3389 Terminal Services,4125
RWW. I double checked the check list in server management and enabled VPN to
the appropriate users. I went into Server Management.I double checked the
settiings inside RRAS for the internal and external nics and the NAT/Firewal
is showing SMTP,RDP,HTTPS,VPN PPTP,HTTP,RWW settings all checked on the
external nic.When attempting with an domain administrator account I still
get those error:721,and 800 . What am I doing wrong????? I greatly
appriciate your assistance fixing this issue. Thank you.

Joey

Try connecting the actual IP address instead of the dns name for the VPN
connection to see if it is a name resolution problem or not. It would also
be best to try and use PPTP before attempting to use L2TP due to the
complexity of L2TP working over NAT and requiring computer certificates for
authentication. On a client computer, configure the VPN connectoid to use
PPTP as the type of VPN under networking. Also make sure that any
router/firewall in the VPN connection path is configured to allow protocol
47/GRE which commonly is referred to as PPTP pass through. --- Steve


"Joe" <jbcandullo(nospam)@mmadisonservices.com> wrote in message
news:(E-Mail Removed)...
> Greetings Everyone,
> I have SBS 2003 Standard Edition. The server has two nic's for NAT on the
> RRAS. One nic is for an External IP address of 192.168.1.10 and the other
> nic is for an internal IP address of 192.168.16.2. The router is a linksys
> WRT54G3 that gets the DHCP address resolved by TZO.com to a friendly name
> for all services to the IP address without any problems except the VPN
> connection. I keep getting errors:721, or 800 when attempting to connect
> with XP Professional machines. I have all of the following Ports
> forwarding to the External nic 192.168.1.10, these are the settings 25
> SMTP TCP,80 http,110 pop3,443 https, 500 ipsec,1723 PPTP,3389 Terminal
> Services,4125 RWW. I double checked the check list in server management
> and enabled VPN to the appropriate users. I went into Server Management.I
> double checked the settiings inside RRAS for the internal and external
> nics and the NAT/Firewal is showing SMTP,RDP,HTTPS,VPN PPTP,HTTP,RWW
> settings all checked on the external nic.When attempting with an domain
> administrator account I still get those error:721,and 800 . What am I
> doing wrong????? I greatly appriciate your assistance fixing this issue.
> Thank you.
>
> Joey
>

Hey Everyone,
Thanks for the replies, I found out it was a bug in the Linksys WRT54GS
routers firmware preventing the PPTP pass through. As soon as I flashed the
firmware she worked. Thanks again.
Joey

"Steven L Umbach" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> Try connecting the actual IP address instead of the dns name for the VPN
> connection to see if it is a name resolution problem or not. It would also
> be best to try and use PPTP before attempting to use L2TP due to the
> complexity of L2TP working over NAT and requiring computer certificates
> for authentication. On a client computer, configure the VPN connectoid to
> use PPTP as the type of VPN under networking. Also make sure that any
> router/firewall in the VPN connection path is configured to allow protocol
> 47/GRE which commonly is referred to as PPTP pass through. --- Steve
>
>
> "Joe" <jbcandullo(nospam)@mmadisonservices.com> wrote in message
> news:(E-Mail Removed)...
>> Greetings Everyone,
>> I have SBS 2003 Standard Edition. The server has two nic's for NAT on the
>> RRAS. One nic is for an External IP address of 192.168.1.10 and the other
>> nic is for an internal IP address of 192.168.16.2. The router is a
>> linksys WRT54G3 that gets the DHCP address resolved by TZO.com to a
>> friendly name for all services to the IP address without any problems
>> except the VPN connection. I keep getting errors:721, or 800 when
>> attempting to connect with XP Professional machines. I have all of the
>> following Ports forwarding to the External nic 192.168.1.10, these are
>> the settings 25 SMTP TCP,80 http,110 pop3,443 https, 500 ipsec,1723
>> PPTP,3389 Terminal Services,4125 RWW. I double checked the check list in
>> server management and enabled VPN to the appropriate users. I went into
>> Server Management.I double checked the settiings inside RRAS for the
>> internal and external nics and the NAT/Firewal is showing
>> SMTP,RDP,HTTPS,VPN PPTP,HTTP,RWW settings all checked on the external
>> nic.When attempting with an domain administrator account I still get
>> those error:721,and 800 . What am I doing wrong????? I greatly appriciate
>> your assistance fixing this issue. Thank you.
>>
>> Joey
>>
>
>