pablogiganti
asked on
Server can ping client, but client can’t ping server
Scenario:
Windows 2003 server (IP10.0.0.100, gateway 10.0.0.138, mask 255.0.0.0) running DHCP (scope 10.0.0.1 – 10.0.0.254), DNS and Active Directory
Modem/Router SpeddTouch 510 (not 510i) (IP10.0.0.138) with DHCP and DNS turned off, working as gateway.
Windows XP client (IP10.0.0.50, gateway 10.0.0.138, mask 255.0.0.0)
Issue:
The server can ping the client (using both IP and name), but the client can’t ping the server (using neither IP nor name).
The client’s network values were entered manually because it wasn’t able to get them from the 2003 server. This IP address (10.0.0.50) is not being used (there’re only two machines connected to the network, the server and the client)
Ipconfig /all server
C:\Documents and Settings\Administrator>ipc
Windows IP Configuration
Host Name . . . . . . . . . . . . : cmr-server-002
Primary Dns Suffix . . . . . . . : cmr.com.es
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : Yes
DNS Suffix Search List. . . . . . : cmr.com.es
com.es
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VIA Rhine II Fast Ethernet Adapter
Physical Address. . . . . . . . . : 00-50-8D-4F-F5-2B
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.0.0.100
Subnet Mask . . . . . . . . . . . : 255.0.0.0
Default Gateway . . . . . . . . . : 10.0.0.138
DNS Servers . . . . . . . . . . . : 10.0.0.100
Route.exe print server
C:\Documents and Settings\Administrator>rou
IPv4 Route Table
==========================
Interface List
0x1 ..........................
0x10003 ...00 50 8d 4f f5 2b ...... VIA Rhine II Fast Ethernet Adapter
==========================
==========================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 10.0.0.138 10.0.0.100 20
10.0.0.0 255.0.0.0 10.0.0.100 10.0.0.100 20
10.0.0.100 255.255.255.255 127.0.0.1 127.0.0.1 20
10.255.255.255 255.255.255.255 10.0.0.100 10.0.0.100 20
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
224.0.0.0 240.0.0.0 10.0.0.100 10.0.0.100 20
255.255.255.255 255.255.255.255 10.0.0.100 10.0.0.100 1
Default Gateway: 10.0.0.138
==========================
Persistent Routes:
None
Ipconfig /all client
C:\Documents and Settings\pablo>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : pablo-madrid
Primary Dns Suffix . . . . . . . : cmr.com.es
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : cmr.com.es
cmr.com.es
com.es
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : cmr.com.es
Description . . . . . . . . . . . : NVIDIA nForce MCP Networking Adapter
Physical Address. . . . . . . . . : 00-04-61-4B-6D-94
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.0.0.50
Subnet Mask . . . . . . . . . . . : 255.0.0.0
Default Gateway . . . . . . . . . : 10.0.0.138
DNS Servers . . . . . . . . . . . : 80.58.0.33
80.58.32.97
10.0.0.100
Route.exe print client
C:\Documents and Settings\pablo>route print
==========================
Interface List
0x1 ..........................
0x10003 ...00 04 61 4b 6d 94 ...... NVIDIA nForce MCP Networking Adapter
==========================
==========================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 10.0.0.138 10.0.0.50 20
10.0.0.0 255.0.0.0 10.0.0.50 10.0.0.50 20
10.0.0.50 255.255.255.255 127.0.0.1 127.0.0.1 20
10.255.255.255 255.255.255.255 10.0.0.50 10.0.0.50 20
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
224.0.0.0 240.0.0.0 10.0.0.50 10.0.0.50 20
255.255.255.255 255.255.255.255 10.0.0.50 10.0.0.50 1
Default Gateway: 10.0.0.138
==========================
Persistent Routes:
None
I changed all the cables, just n case.
Any ideas?
Cheers,
Pablo
Windows 2003 server (IP10.0.0.100, gateway 10.0.0.138, mask 255.0.0.0) running DHCP (scope 10.0.0.1 – 10.0.0.254), DNS and Active Directory
Modem/Router SpeddTouch 510 (not 510i) (IP10.0.0.138) with DHCP and DNS turned off, working as gateway.
Windows XP client (IP10.0.0.50, gateway 10.0.0.138, mask 255.0.0.0)
Issue:
The server can ping the client (using both IP and name), but the client can’t ping the server (using neither IP nor name).
The client’s network values were entered manually because it wasn’t able to get them from the 2003 server. This IP address (10.0.0.50) is not being used (there’re only two machines connected to the network, the server and the client)
Ipconfig /all server
C:\Documents and Settings\Administrator>ipc
Windows IP Configuration
Host Name . . . . . . . . . . . . : cmr-server-002
Primary Dns Suffix . . . . . . . : cmr.com.es
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : Yes
DNS Suffix Search List. . . . . . : cmr.com.es
com.es
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VIA Rhine II Fast Ethernet Adapter
Physical Address. . . . . . . . . : 00-50-8D-4F-F5-2B
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.0.0.100
Subnet Mask . . . . . . . . . . . : 255.0.0.0
Default Gateway . . . . . . . . . : 10.0.0.138
DNS Servers . . . . . . . . . . . : 10.0.0.100
Route.exe print server
C:\Documents and Settings\Administrator>rou
IPv4 Route Table
==========================
Interface List
0x1 ..........................
0x10003 ...00 50 8d 4f f5 2b ...... VIA Rhine II Fast Ethernet Adapter
==========================
==========================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 10.0.0.138 10.0.0.100 20
10.0.0.0 255.0.0.0 10.0.0.100 10.0.0.100 20
10.0.0.100 255.255.255.255 127.0.0.1 127.0.0.1 20
10.255.255.255 255.255.255.255 10.0.0.100 10.0.0.100 20
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
224.0.0.0 240.0.0.0 10.0.0.100 10.0.0.100 20
255.255.255.255 255.255.255.255 10.0.0.100 10.0.0.100 1
Default Gateway: 10.0.0.138
==========================
Persistent Routes:
None
Ipconfig /all client
C:\Documents and Settings\pablo>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : pablo-madrid
Primary Dns Suffix . . . . . . . : cmr.com.es
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : cmr.com.es
cmr.com.es
com.es
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : cmr.com.es
Description . . . . . . . . . . . : NVIDIA nForce MCP Networking Adapter
Physical Address. . . . . . . . . : 00-04-61-4B-6D-94
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 10.0.0.50
Subnet Mask . . . . . . . . . . . : 255.0.0.0
Default Gateway . . . . . . . . . : 10.0.0.138
DNS Servers . . . . . . . . . . . : 80.58.0.33
80.58.32.97
10.0.0.100
Route.exe print client
C:\Documents and Settings\pablo>route print
==========================
Interface List
0x1 ..........................
0x10003 ...00 04 61 4b 6d 94 ...... NVIDIA nForce MCP Networking Adapter
==========================
==========================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 10.0.0.138 10.0.0.50 20
10.0.0.0 255.0.0.0 10.0.0.50 10.0.0.50 20
10.0.0.50 255.255.255.255 127.0.0.1 127.0.0.1 20
10.255.255.255 255.255.255.255 10.0.0.50 10.0.0.50 20
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
224.0.0.0 240.0.0.0 10.0.0.50 10.0.0.50 20
255.255.255.255 255.255.255.255 10.0.0.50 10.0.0.50 1
Default Gateway: 10.0.0.138
==========================
Persistent Routes:
None
I changed all the cables, just n case.
Any ideas?
Cheers,
Pablo
adamdrayer
That's really strange. Try running "arp -a" on the client and see if the server shows up.
ASKER
Hi adamdrayer,
Thanks for your reply.
Yes, it’s very strange. Here’s the arp –a result:
C:\Documents and Settings\pablo>arp -a
Interface: 10.0.0.50 --- 0x10003
Internet Address Physical Address Type
10.0.0.138 00-90-d0-75-81-c8 dynamic
Could it be the static routing of the SpeedTouch?
It was a SpeedTouch originally bought in the UK, and later brought to Spain. For it to work in Spain I had to use a Spanish installer software provided by telephonic (the ISP) and nothing against the Spaniards, but it messed everything up and all the IPs changed to things like 172.26.0.1, 172.26.0.2, etc. and the IP of the SpeedTouch (Gateway) changed as well to something I can’t remember.
Then, I simply stopped using the DHCP and the DNS servers of the SpeedTouch (started working on their on after this software installation) and set up the DHCP server on the W2003 server with a scope 172.26.0.1 - 172.26.0.254.
Everything was ok until suddenly -- it wasn’t ok anymore :(
So I changed things to the way is showed above. I don’t think it really matters as I understand that I can do whatever I want with my intranet (use whatever IP range I want).
Here’s the SpeedTouch’s IP address table & route table:
IP address table
Intf Address/Netmask Type Translation
eth0 172.26.0.1/16 Extra none
eth0 10.0.0.138/8 Extra none
cip0 217.127.196.87/26 CIP pat
loop 127.0.0.1/8 Auto none
IP route table
Destination Source Gateway Intf
172.26.0.0/16 172.26.0.0/16 172.26.0.1 eth0
10.0.0.0/8 10.0.0.0/8 10.0.0.138 eth0
255.255.255.255/32 any 10.0.0.138 eth0
172.26.0.1/32 any 172.26.0.1 eth0
10.0.0.138/32 any 10.0.0.138 eth0
217.127.196.87/32 any 217.127.196.87 cip0
127.0.0.1/32 any 127.0.0.1 loop
217.127.196.64/26 any 217.127.196.87 cip0
172.26.0.0/16 any 172.26.0.1 eth0
10.0.0.0/8 any 10.0.0.138 eth0
224.0.0.0/4 any 172.26.0.1* eth0
default any 217.127.196.66 cip0
Any Suggestions……?
Cheers,
Pablo
Thanks for your reply.
Yes, it’s very strange. Here’s the arp –a result:
C:\Documents and Settings\pablo>arp -a
Interface: 10.0.0.50 --- 0x10003
Internet Address Physical Address Type
10.0.0.138 00-90-d0-75-81-c8 dynamic
Could it be the static routing of the SpeedTouch?
It was a SpeedTouch originally bought in the UK, and later brought to Spain. For it to work in Spain I had to use a Spanish installer software provided by telephonic (the ISP) and nothing against the Spaniards, but it messed everything up and all the IPs changed to things like 172.26.0.1, 172.26.0.2, etc. and the IP of the SpeedTouch (Gateway) changed as well to something I can’t remember.
Then, I simply stopped using the DHCP and the DNS servers of the SpeedTouch (started working on their on after this software installation) and set up the DHCP server on the W2003 server with a scope 172.26.0.1 - 172.26.0.254.
Everything was ok until suddenly -- it wasn’t ok anymore :(
So I changed things to the way is showed above. I don’t think it really matters as I understand that I can do whatever I want with my intranet (use whatever IP range I want).
Here’s the SpeedTouch’s IP address table & route table:
IP address table
Intf Address/Netmask Type Translation
eth0 172.26.0.1/16 Extra none
eth0 10.0.0.138/8 Extra none
cip0 217.127.196.87/26 CIP pat
loop 127.0.0.1/8 Auto none
IP route table
Destination Source Gateway Intf
172.26.0.0/16 172.26.0.0/16 172.26.0.1 eth0
10.0.0.0/8 10.0.0.0/8 10.0.0.138 eth0
255.255.255.255/32 any 10.0.0.138 eth0
172.26.0.1/32 any 172.26.0.1 eth0
10.0.0.138/32 any 10.0.0.138 eth0
217.127.196.87/32 any 217.127.196.87 cip0
127.0.0.1/32 any 127.0.0.1 loop
217.127.196.64/26 any 217.127.196.87 cip0
172.26.0.0/16 any 172.26.0.1 eth0
10.0.0.0/8 any 10.0.0.138 eth0
224.0.0.0/4 any 172.26.0.1* eth0
default any 217.127.196.66 cip0
Any Suggestions……?
Cheers,
Pablo
SOLUTION
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Except the server's and gateway's addresses from dhcp scope:
10.0.0.100 and 10.0.0.138
Try first to make the workstation get the address from dhcp. Disable any firewall on the workstation, it's very important.
10.0.0.100 and 10.0.0.138
Try first to make the workstation get the address from dhcp. Disable any firewall on the workstation, it's very important.
ASKER
Hi crissand,
Thanks for your reply. I did those exceptions from the beginning. I forgot to mention them.
The client can’t get anything (DHCP included) from the server.
Also, I disabled the windows firewall on both machines. But now that you mention it, the problem could have started when I did a windows XP update.
A ‘wonderful’ windows firewall appeared on the control panel. That’s the one I turned off, unless it stays on somehow.
How can I know if that’s the case?
Adam,
I installed WinPcap as you suggested. It seems to be a bit too advanced for me, as I can’t see any GUI because it probably works from command line or something like that.
However, something quite strange happen today. I did a reconcile scopes and a computer with IP 10.0.0.1 appeared. After the reconciliation, it now appears under the address lease with IP 10.0.0.1 name 10.0.0.1.
What’s that????
I ping it from the server and the client, but there’s no reply.
At some point I set up the server on that address but it didn’t work, so I change it to 10.0.0.100. Could have the DHCP server gone mad?
I wouldn’t mind uninstall it and install it again (I’ve done it a few times already). But, how can I make sure I’m getting read of all the settings, IP databases, etc. (a clean install, in other words)?
Cheers,
Pablo.
Thanks for your reply. I did those exceptions from the beginning. I forgot to mention them.
The client can’t get anything (DHCP included) from the server.
Also, I disabled the windows firewall on both machines. But now that you mention it, the problem could have started when I did a windows XP update.
A ‘wonderful’ windows firewall appeared on the control panel. That’s the one I turned off, unless it stays on somehow.
How can I know if that’s the case?
Adam,
I installed WinPcap as you suggested. It seems to be a bit too advanced for me, as I can’t see any GUI because it probably works from command line or something like that.
However, something quite strange happen today. I did a reconcile scopes and a computer with IP 10.0.0.1 appeared. After the reconciliation, it now appears under the address lease with IP 10.0.0.1 name 10.0.0.1.
What’s that????
I ping it from the server and the client, but there’s no reply.
At some point I set up the server on that address but it didn’t work, so I change it to 10.0.0.100. Could have the DHCP server gone mad?
I wouldn’t mind uninstall it and install it again (I’ve done it a few times already). But, how can I make sure I’m getting read of all the settings, IP databases, etc. (a clean install, in other words)?
Cheers,
Pablo.
ASKER CERTIFIED SOLUTION
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This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
WinPcap is just the driver, there should be 2 programs you can install from that site... the other one is the actualy program wit the GUI... but it looks like crissand's got this one, so I'm just gonna monitor and think about it