Does anybody have a any idea of why i lost RDP ?

T

Tony Girgenti

Hello.

If i plug my computer at home (WIN XP Pro SP2) directly into the cable modem, i can VPN and RDP to my office without a problem. Office setup: (SBS2000 SBS2000 server, 2 nics, Zyxel Prestige 650 ADSL Modem, Zyxel Zywall 10 firewall 192.168.1.1, External nic: 192.168.1.2, Internal nic: 10.1.1.1, ).

I brought home a Dell server, installed SBS2003 Premium, SP1, no ISA, two nics(Internal:192.168.16.2, External:192.168.2.15), Linksys router(192.168.2.1), Belkin switch and plugged cable modem into Linksys router. I also plugged the home computer into the Belkin switch.

Everthing works fine, server and home computers can access internet and email just being plugged into switch, not really logging onto server, just staying local.

Problem: Workstation that was able to VPN/RDP, can now establish VPN but cannot RDP. Message "The client could not connect to the remote computer" comes up.
Cannot ping 192.168.1.2 after VPN is established on workstation
Cannot Open http://SBS_IP/remote in Internet Explorer after VPN established on workstation
PPTP Passthrough is enabled on Linksys router
Ports 47 and 1723 are being forwarded by Linksys router
I have run CEICW numerous times
There are no errors in the event log after attempting this

If i plug home computer workstation into Linksys router or cable modem, I can again VPN/RDP. Once i put it back to switch on network, VPN OK but cannot RDP.

I am trying to RDP to the same server that i am VPNing to.

I have included IPCONGIG /ALL for home computer, home SBS2003 server and office SBS2000 server.

I have been trying to fix this problem for weeks now. Any help would be greatly appreciated.

Thanks,
Tony

Home computer================================================
C:\Documents and Settings\Administrator>ipconfig /all
Windows IP Configuration

Host Name . . . . . . . . . . . . : TONYHOME
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : LakesideOfficeSystemsInc.local

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : LakesideOfficeSystemsInc.local
Description . . . . . . . . . . . : SiS 900 PCI Fast Ethernet Adapter
Physical Address. . . . . . . . . : 00-D0-09-AF-A1-D6
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.16.11
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.16.2
DHCP Server . . . . . . . . . . . : 192.168.16.2
DNS Servers . . . . . . . . . . . : 192.168.16.2
Primary WINS Server . . . . . . . : 192.168.16.2
Lease Obtained. . . . . . . . . . : Sunday, June 05, 2005 9:11:01 AM
Lease Expires . . . . . . . . . . : Monday, June 13, 2005 9:11:01 AM

Home server==================================================
C:\Documents and Settings\Administrator>ipconfig /all

Windows IP Configuration
Host Name . . . . . . . . . . . . : lakeside
Primary Dns Suffix . . . . . . . : LakesideOfficeSystemsInc.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : LakesideOfficeSystemsInc.local

Ethernet adapter Internal Server Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Dual Port Server Adapter
Physical Address. . . . . . . . . : 00-04-23-A5-CF-83
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.16.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.16.2
Primary WINS Server . . . . . . . : 192.168.16.2

Ethernet adapter External Network Connection 2:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Dual Port Server Adapter #2
Physical Address. . . . . . . . . : 00-04-23-A5-CF-82
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.2.15
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.2.1
DNS Servers . . . . . . . . . . . : 192.168.16.2
NetBIOS over Tcpip. . . . . . . . : Disabled

C:\Documents and Settings\Administrator>

Office server==================================================
C:\Documents and Settings\Administrator>ipconfig /all

Windows 2000 IP Configuration
Host Name . . . . . . . . . . . . : compexserver
Primary DNS Suffix . . . . . . . : compex.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : compex.local

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 3Com EtherLink III ISA
(3C509b-Combo)
Physical Address. . . . . . . . . : 00-60-08-A6-40-F6
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.1.1.1
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 10.1.1.1
Primary WINS Server . . . . . . . : 10.1.1.1

Ethernet adapter External:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/100+ Management Adapter
Physical Address. . . . . . . . . : 00-90-27-9D-64-11
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 10.1.1.1
 
R

Robin Walker [MVP]

Tony Girgenti said:
I brought home a Dell server, installed SBS2003 Premium, SP1, no ISA,
two nics(Internal:192.168.16.2, External:192.168.2.15), Linksys
router(192.168.2.1), Belkin switch and plugged cable modem into
Linksys router. I also plugged the home computer into the Belkin
switch.
Click to expand...

That is a curious configuration. Why do you not just plug both home PCs
into the Linksys router?
Problem: Workstation that was able to VPN/RDP, can now establish VPN
but cannot RDP. Message "The client could not connect to the remote
computer" comes up.
Cannot ping 192.168.1.2 after VPN is established on workstation
Cannot Open http://SBS_IP/remote in Internet Explorer after VPN
established on workstation
Click to expand...

I think we need to see the "ipconfig /all" details for the VPN connection
itself when the VPN is connected, so as to understand the routing. How have
you configured the VPN server to allocate IP addresses and subnets to
connecting clients?
If i plug home computer workstation into Linksys router or cable
modem, I can again VPN/RDP. Once i put it back to switch on
network, VPN OK but cannot RDP.
Click to expand...

How are you initiating the RDP connection? By IP address or by DNS name?
Home server==================================================

Ethernet adapter Internal Server Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Dual Port
Server Adapter
Physical Address. . . . . . . . . : 00-04-23-A5-CF-83
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.16.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.16.2
Primary WINS Server . . . . . . . : 192.168.16.2

Ethernet adapter External Network Connection 2:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Dual Port
Server Adapter #2
Physical Address. . . . . . . . . : 00-04-23-A5-CF-82
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.2.15
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.2.1
DNS Servers . . . . . . . . . . . : 192.168.16.2
Click to expand...

Curious: you have the DNS server set up to be the IP address of the internal
LAN NIC. How does this PC ever get DNS information from the internet?
Office server==================================================
Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 3Com EtherLink III ISA
(3C509b-Combo)
Physical Address. . . . . . . . . : 00-60-08-A6-40-F6
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.1.1.1
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 10.1.1.1
Primary WINS Server . . . . . . . : 10.1.1.1

Ethernet adapter External:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/100+
Management Adapter
Physical Address. . . . . . . . . : 00-90-27-9D-64-11
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 10.1.1.1
Click to expand...

Curious again: you have the DNS server set up to be the IP address of the
internal LAN NIC. How does this PC ever get DNS information from the
internet?
 
T

Tony Girgenti

Hello Robin.

I guess that would be easy enough to resolve my own problem.

If i was to set up a system like this for a client, and i have already using
SBS2000, and they had say 10 to 15 users, would i plug all of them into the
router and throw the switch out ? Don't we lose the lose the security of
the ISA2004 firewall ?

Thanks,
Tony
 
M

Matt Gibson

Just curious, why arn't you running ISA?

Matt GIbson - GSEC
Hello.

If i plug my computer at home (WIN XP Pro SP2) directly into the cable
modem, i can VPN and RDP to my office without a problem. Office setup:
(SBS2000 SBS2000 server, 2 nics, Zyxel Prestige 650 ADSL Modem, Zyxel Zywall
10 firewall 192.168.1.1, External nic: 192.168.1.2, Internal nic:
10.1.1.1, ).

I brought home a Dell server, installed SBS2003 Premium, SP1, no ISA, two
nics(Internal:192.168.16.2, External:192.168.2.15), Linksys
router(192.168.2.1), Belkin switch and plugged cable modem into Linksys
router. I also plugged the home computer into the Belkin switch.

Everthing works fine, server and home computers can access internet and
email just being plugged into switch, not really logging onto server, just
staying local.

Problem: Workstation that was able to VPN/RDP, can now establish VPN but
cannot RDP. Message "The client could not connect to the remote computer"
comes up.
Cannot ping 192.168.1.2 after VPN is established on workstation
Cannot Open http://SBS_IP/remote in Internet Explorer after VPN
established on workstation
PPTP Passthrough is enabled on Linksys router
Ports 47 and 1723 are being forwarded by Linksys router
I have run CEICW numerous times
There are no errors in the event log after attempting this

If i plug home computer workstation into Linksys router or cable modem, I
can again VPN/RDP. Once i put it back to switch on network, VPN OK but
cannot RDP.

I am trying to RDP to the same server that i am VPNing to.

I have included IPCONGIG /ALL for home computer, home SBS2003 server and
office SBS2000 server.

I have been trying to fix this problem for weeks now. Any help would be
greatly appreciated.

Thanks,
Tony

Home computer================================================
C:\Documents and Settings\Administrator>ipconfig /all
Windows IP Configuration

Host Name . . . . . . . . . . . . : TONYHOME
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : LakesideOfficeSystemsInc.local

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : LakesideOfficeSystemsInc.local
Description . . . . . . . . . . . : SiS 900 PCI Fast Ethernet
Adapter
Physical Address. . . . . . . . . : 00-D0-09-AF-A1-D6
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.16.11
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.16.2
DHCP Server . . . . . . . . . . . : 192.168.16.2
DNS Servers . . . . . . . . . . . : 192.168.16.2
Primary WINS Server . . . . . . . : 192.168.16.2
Lease Obtained. . . . . . . . . . : Sunday, June 05, 2005 9:11:01 AM
Lease Expires . . . . . . . . . . : Monday, June 13, 2005 9:11:01 AM

Home server==================================================
C:\Documents and Settings\Administrator>ipconfig /all

Windows IP Configuration
Host Name . . . . . . . . . . . . : lakeside
Primary Dns Suffix . . . . . . . : LakesideOfficeSystemsInc.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : LakesideOfficeSystemsInc.local

Ethernet adapter Internal Server Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Dual Port Server
Adapter
Physical Address. . . . . . . . . : 00-04-23-A5-CF-83
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.16.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.16.2
Primary WINS Server . . . . . . . : 192.168.16.2

Ethernet adapter External Network Connection 2:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Dual Port Server
Adapter #2
Physical Address. . . . . . . . . : 00-04-23-A5-CF-82
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.2.15
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.2.1
DNS Servers . . . . . . . . . . . : 192.168.16.2
NetBIOS over Tcpip. . . . . . . . : Disabled

C:\Documents and Settings\Administrator>

Office server==================================================
C:\Documents and Settings\Administrator>ipconfig /all

Windows 2000 IP Configuration
Host Name . . . . . . . . . . . . : compexserver
Primary DNS Suffix . . . . . . . : compex.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : compex.local

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 3Com EtherLink III ISA
(3C509b-Combo)
Physical Address. . . . . . . . . : 00-60-08-A6-40-F6
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.1.1.1
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 10.1.1.1
Primary WINS Server . . . . . . . : 10.1.1.1

Ethernet adapter External:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/100+ Management
Adapter
Physical Address. . . . . . . . . : 00-90-27-9D-64-11
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 10.1.1.1
 
T

Tony Girgenti

Hi Matt.

I wanted to get this situation straightened first. I just didn't want to make this problem any worse by installing ISA and then trying to troubleshoot through another layer of security.

This server is not in a production environment yet. I wanted to get it up and running and maybe learn something along the way.

Thanks,
Tony

Just curious, why arn't you running ISA?

Matt GIbson - GSEC
Hello.

If i plug my computer at home (WIN XP Pro SP2) directly into the cable
modem, i can VPN and RDP to my office without a problem. Office setup:
(SBS2000 SBS2000 server, 2 nics, Zyxel Prestige 650 ADSL Modem, Zyxel Zywall
10 firewall 192.168.1.1, External nic: 192.168.1.2, Internal nic:
10.1.1.1, ).

I brought home a Dell server, installed SBS2003 Premium, SP1, no ISA, two
nics(Internal:192.168.16.2, External:192.168.2.15), Linksys
router(192.168.2.1), Belkin switch and plugged cable modem into Linksys
router. I also plugged the home computer into the Belkin switch.

Everthing works fine, server and home computers can access internet and
email just being plugged into switch, not really logging onto server, just
staying local.

Problem: Workstation that was able to VPN/RDP, can now establish VPN but
cannot RDP. Message "The client could not connect to the remote computer"
comes up.
Cannot ping 192.168.1.2 after VPN is established on workstation
Cannot Open http://SBS_IP/remote in Internet Explorer after VPN
established on workstation
PPTP Passthrough is enabled on Linksys router
Ports 47 and 1723 are being forwarded by Linksys router
I have run CEICW numerous times
There are no errors in the event log after attempting this

If i plug home computer workstation into Linksys router or cable modem, I
can again VPN/RDP. Once i put it back to switch on network, VPN OK but
cannot RDP.

I am trying to RDP to the same server that i am VPNing to.

I have included IPCONGIG /ALL for home computer, home SBS2003 server and
office SBS2000 server.

I have been trying to fix this problem for weeks now. Any help would be
greatly appreciated.

Thanks,
Tony

Home computer================================================
C:\Documents and Settings\Administrator>ipconfig /all
Windows IP Configuration

Host Name . . . . . . . . . . . . : TONYHOME
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : LakesideOfficeSystemsInc.local

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : LakesideOfficeSystemsInc.local
Description . . . . . . . . . . . : SiS 900 PCI Fast Ethernet
Adapter
Physical Address. . . . . . . . . : 00-D0-09-AF-A1-D6
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.16.11
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.16.2
DHCP Server . . . . . . . . . . . : 192.168.16.2
DNS Servers . . . . . . . . . . . : 192.168.16.2
Primary WINS Server . . . . . . . : 192.168.16.2
Lease Obtained. . . . . . . . . . : Sunday, June 05, 2005 9:11:01 AM
Lease Expires . . . . . . . . . . : Monday, June 13, 2005 9:11:01 AM

Home server==================================================
C:\Documents and Settings\Administrator>ipconfig /all

Windows IP Configuration
Host Name . . . . . . . . . . . . : lakeside
Primary Dns Suffix . . . . . . . : LakesideOfficeSystemsInc.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : LakesideOfficeSystemsInc.local

Ethernet adapter Internal Server Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Dual Port Server
Adapter
Physical Address. . . . . . . . . : 00-04-23-A5-CF-83
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.16.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.16.2
Primary WINS Server . . . . . . . : 192.168.16.2

Ethernet adapter External Network Connection 2:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Dual Port Server
Adapter #2
Physical Address. . . . . . . . . : 00-04-23-A5-CF-82
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.2.15
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.2.1
DNS Servers . . . . . . . . . . . : 192.168.16.2
NetBIOS over Tcpip. . . . . . . . : Disabled

C:\Documents and Settings\Administrator>

Office server==================================================
C:\Documents and Settings\Administrator>ipconfig /all

Windows 2000 IP Configuration
Host Name . . . . . . . . . . . . : compexserver
Primary DNS Suffix . . . . . . . : compex.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : compex.local

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 3Com EtherLink III ISA
(3C509b-Combo)
Physical Address. . . . . . . . . : 00-60-08-A6-40-F6
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.1.1.1
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 10.1.1.1
Primary WINS Server . . . . . . . : 10.1.1.1

Ethernet adapter External:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/100+ Management
Adapter
Physical Address. . . . . . . . . : 00-90-27-9D-64-11
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 10.1.1.1
 

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