I have a home multiple PC setup: a telecommunication cable goes from wall to a ADSL router. Cat5 cables go from the ADSL router to 3 PCs. One cable goes to a netgear router from which it goes to yet three PCs.
Internet is available to everyone and works great. File sharing does not work. What I would like is:
- have internet available
- share a printer
- have files shared (a directory for that perhaps)
Unfortunately if I have internet I have to have a firewall and all the firewall prevent access to the other PCs around the house. To have sharing I have to yank the telecom cable and disable all firewall and reboot the ADSL and router and tehn after a few mnutes the computers see each other.
The problem is because I have to set up a “safe zone” for my LAN ie tell the firewall that traffic coming from computers on the LAN is ok (but not if it comes from internet). I’ll get back to that later?
When my telecom cable is off the wall and I have no internet cnnection IPCONFIG shows the PCs having an ip address 198.nn.nn.nn. When the telecom is connected to the ADSL router IPCONFIG shows ip’s 88.nn.nn.nn. My ISP issues a dynamic ip everyday or so. Now what do I put as a trusted zone? If I put 198.nn.nn.nn I won’t get any connection to the other computers if my internet is on. Putting 88.nn.nn.nn would not be a good idea!