PHines
18-04-2005, 10:31
My first post, so I guess I should start by saying "hello!" But, I'm afraid this is not just a social call - I also have a problem that I hope someone can help me with (ain't that always the way :-)
I've been helping a friend who's uses the NTL Business Broadband service. He already had a business broadband 2020 modem directly connected to his PC. He wanted to share this connection with a 2nd PC, so we added a Netgear WGT634U wireless router.
So his setup is :
NTL Modem -> Netgear -> 2 PC's (one cabled, 1 wireless)
As expected, the PC's are allocated 192.168.1.x addresses by the Netgear DHCP server. But, I was surprised to see that the Netgear was assigned a 192.168.0.2 address, presumably by the NTL Modem. Have I got this correct - the 2020 modem contains a DHCP server ?
This setup works fine for web-browsing, email etc.
However, I'm also trying to setup some remote administration software called Radmin, which will allow me to remotely control his 2 PC's. I've installed Radmin on lots of other PC's for family/friends and, whilst it can be a bit fiddly to setup (opening the right ports etc.) I've always managed to get it working eventually - until now that is.
The Radmin software is installed on each of his 2 PC's and I have opened 2 ports in the Netgear firewall, forwarded to each PC. I have disabled the windows firewall on each PC. When I try and access either of his PC's from my office, using his external IP address, Radmin cannot connect. When I scan his external IP address, the 2 ports that I opened in the Netgrear Firewall are reported as 'closed.
Also, when I am working at his house and try and access the PC back in my office with Radmin, I cannot connect (this works from other locations so it's not a config problem at my end). I've never had this problem before.
So, after all that pre-amble, my questions are :
1) Does the NTL 2020 business modem contain a firewall ? (I'm assuming that is why I cannot access the ports that I opened in the Netgear firewall)
2) If so, is it possible to disable it (and rely on the Netgear firewall) or to open the Ports that I need in the NTL modem ?
3) Is it possible to 'switch-off' the DHCP server in the NTL modem, so that the Netgear sees the external IP address as it's 'WAN address' instead of 192.168.0.2 ? I suspect that this may be the cause of my problem with accessing my office PC from his.
Sorry for the long message; let me know if (as I suspect) I've not been very clear on any aspect.
/Pete
I've been helping a friend who's uses the NTL Business Broadband service. He already had a business broadband 2020 modem directly connected to his PC. He wanted to share this connection with a 2nd PC, so we added a Netgear WGT634U wireless router.
So his setup is :
NTL Modem -> Netgear -> 2 PC's (one cabled, 1 wireless)
As expected, the PC's are allocated 192.168.1.x addresses by the Netgear DHCP server. But, I was surprised to see that the Netgear was assigned a 192.168.0.2 address, presumably by the NTL Modem. Have I got this correct - the 2020 modem contains a DHCP server ?
This setup works fine for web-browsing, email etc.
However, I'm also trying to setup some remote administration software called Radmin, which will allow me to remotely control his 2 PC's. I've installed Radmin on lots of other PC's for family/friends and, whilst it can be a bit fiddly to setup (opening the right ports etc.) I've always managed to get it working eventually - until now that is.
The Radmin software is installed on each of his 2 PC's and I have opened 2 ports in the Netgear firewall, forwarded to each PC. I have disabled the windows firewall on each PC. When I try and access either of his PC's from my office, using his external IP address, Radmin cannot connect. When I scan his external IP address, the 2 ports that I opened in the Netgrear Firewall are reported as 'closed.
Also, when I am working at his house and try and access the PC back in my office with Radmin, I cannot connect (this works from other locations so it's not a config problem at my end). I've never had this problem before.
So, after all that pre-amble, my questions are :
1) Does the NTL 2020 business modem contain a firewall ? (I'm assuming that is why I cannot access the ports that I opened in the Netgear firewall)
2) If so, is it possible to disable it (and rely on the Netgear firewall) or to open the Ports that I need in the NTL modem ?
3) Is it possible to 'switch-off' the DHCP server in the NTL modem, so that the Netgear sees the external IP address as it's 'WAN address' instead of 192.168.0.2 ? I suspect that this may be the cause of my problem with accessing my office PC from his.
Sorry for the long message; let me know if (as I suspect) I've not been very clear on any aspect.
/Pete