NAT through multiple router(s)

inu · 12-07-2007, 06:03 PM

hi there,

I had been using tightVNC at my work. Now I come to a new environment, then puzzled me.

As a client side, I need to re-configure router(s).

The new situation is as follows.
Internet Access via ADSL modem Zyxel => LAN 1 via Netgear router => ICS via Windows 2000SP4 machine => my pc (fix local ip).

I set up NAT port forwarding as follows, and had to stop because I have no idea further...

Setting in Zyxel
NAT Virtual Server
192.168.2.1:5500 (LAN IP of Netgear)

Setting in Netgear
NAT Virtual Server
192.168.0.1:5500 (LAN IP of win2ksp4)

any advice?
TIA,
inu

johnwill · 12-08-2007, 12:43 PM

I'd put the secondary router in the DMZ of the primary router, that will eliminate the issue of having to try to port forward through two NAT layers. That's how I run my Verizon MI424WR that came with my FiOS.

inu · 12-08-2007, 03:57 PM

Thanks for your response. OK. DMZ is indeed a simple method to through Netgear. Then how about ICS on Windows2000.
Can I just add TCP & UDP protocol service w/ port 5500 to be assigned to my pc's LAN IP?
cheers,
inu

johnwill · 12-09-2007, 07:31 AM

ICS? What do you need ICS for if you have a router?

inu · 12-09-2007, 06:14 PM

hello JohnWill, To your wonderings.... My work has a setup as follows.
ADSL modem (zyxel) => wireless modem (Netgear) => Win2K machine with wireless adapter and ICS to => a 8 ports switch => My PC....

johnwill · 12-10-2007, 07:11 AM

GAD! I'd go for a wireless bridge and lose ICS, which would also lose the multiple NAT layers.

petronius · 12-14-2007, 04:23 PM

I second johnwill...ditch ICS....Wireless + ICS = *crap*

The wireless bridge is your best solution if you can't pull a drop to your switch from the netgear.

johnwill · 12-14-2007, 04:45 PM

A wire would be my first choice, but I assumed that wireless was desired.

12-07-2007, 06:03 PM	#1 (permalink)
inu Registered User Join Date: Dec 2007 Posts: 3 OS: xp	NAT through multiple router(s) hi there, I had been using tightVNC at my work. Now I come to a new environment, then puzzled me. As a client side, I need to re-configure router(s). The new situation is as follows. Internet Access via ADSL modem Zyxel => LAN 1 via Netgear router => ICS via Windows 2000SP4 machine => my pc (fix local ip). I set up NAT port forwarding as follows, and had to stop because I have no idea further... Setting in Zyxel NAT Virtual Server 192.168.2.1:5500 (LAN IP of Netgear) Setting in Netgear NAT Virtual Server 192.168.0.1:5500 (LAN IP of win2ksp4) any advice? TIA, inu

12-08-2007, 12:43 PM	#2 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 31,329 OS: XP-Pro, Vista, Linux Blog Entries: 1	Re: NAT through multiple router(s) I'd put the secondary router in the DMZ of the primary router, that will eliminate the issue of having to try to port forward through two NAT layers. That's how I run my Verizon MI424WR that came with my FiOS. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

12-08-2007, 03:57 PM	#3 (permalink)
inu Registered User Join Date: Dec 2007 Posts: 3 OS: xp	Re: NAT through multiple router(s) Thanks for your response. OK. DMZ is indeed a simple method to through Netgear. Then how about ICS on Windows2000. Can I just add TCP & UDP protocol service w/ port 5500 to be assigned to my pc's LAN IP? cheers, inu

12-09-2007, 07:31 AM	#4 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 31,329 OS: XP-Pro, Vista, Linux Blog Entries: 1	Re: NAT through multiple router(s) ICS? What do you need ICS for if you have a router? __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

12-09-2007, 06:14 PM	#5 (permalink)
inu Registered User Join Date: Dec 2007 Posts: 3 OS: xp	Re: NAT through multiple router(s) hello JohnWill, To your wonderings.... My work has a setup as follows. ADSL modem (zyxel) => wireless modem (Netgear) => Win2K machine with wireless adapter and ICS to => a 8 ports switch => My PC....

12-10-2007, 07:11 AM	#6 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 31,329 OS: XP-Pro, Vista, Linux Blog Entries: 1	Re: NAT through multiple router(s) GAD! I'd go for a wireless bridge and lose ICS, which would also lose the multiple NAT layers. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

12-14-2007, 04:23 PM	#7 (permalink)
petronius Registered User Join Date: Dec 2007 Location: NorCal Posts: 117 OS: XP SP2	Re: NAT through multiple router(s) I second johnwill...ditch ICS....Wireless + ICS = crap The wireless bridge is your best solution if you can't pull a drop to your switch from the netgear.

12-14-2007, 04:45 PM	#8 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 31,329 OS: XP-Pro, Vista, Linux Blog Entries: 1	Re: NAT through multiple router(s) A wire would be my first choice, but I *assumed* that wireless was desired. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience