We are sharing office with two other companies in the same floor. We all three companies sharing a Broadband connection, we received a LAN cable for my companies internet connection, samething all other two companies are getting a cable each for Internet connection, how can we protect my Network from others?. Right now we can ping the other company machines, but how can I protect my Network?. Thanks in advance.
Buy a router. You may need some help picking the right model and configuring it though (depending on what's in there already), but that should solve most of your issues.
Get one of those cheap firewall/routers, for each office.
If I buy one more LinkSys/NetGear Broadband Router (1 WAN + 4 LAN) and connect to the LAN cable which we got connection from Building, will it be OK, since we got assigned 192.168.0.10 as IP address from Building Router, if I put one more Router for my office, can I use default IP address? Or do I have to change to the 192.168.102.x something like that?. also the building has already one Router and can I connect one more Router to the LAN port of the other Router which was serving for all three offices?. Please let me know. Thanks.
1) The WAN port won't be used and you'll lose a LAN port to the main router so a 4-port router will only yield 3 ports - you could go for an 8 port router or add a switch somewhere after. 2) You would probably want to pick a different LAN address from the main LAN to make things simpler. You could set up something like this: 192.168.0.1 192.168.0.2 192.168.20.0-255 WB cable --> main router --> Office 1 Router --> ---------------------------- | | | | | | | | PC1 PC2 PC3 PC4 PC5 PC6 | | 192.168.0.3 192.168.30.0-255 |--------> Office 2 Router --> ---------------------------- | | | | | | | | PC1 PC2 PC3 PC4 PC5 PC6 | | 192.168.0.4 192.168.40.0-255 |--------> Office 2 Router --> ---------------------------- | | | | | | | | PC1 PC2 PC3 PC4 PC5 PC6 \ \ 192.168.0.5 192.168.50.0-255 \------> Office 2 Router --> ---------------------------- | | | | | | PC1 PC2 PC3 PC4 PC5 PC6
I'm not sure what the approved subnet addresses are - I used 192.168.20.x (30,
40 and 50) - I'm not sure what the approved answer would be. You could also have the main router break the 192.168.0.x address space up and spread the 250+ numbers to the various offices in blocks.
I'm not sure what I was thinking - broadband vs ethernet ? You're right, that would make more sense (must have had a modem on the brain). ;0
Luckily the picture stays the same.
If I use 172.16.1.x Netmask 255.255.255.0 for my own LAN within my office, will it be OK, is this IP address range is approved for Local LAN?. I don't want to use 192.168.xx.xx, also if I have one more office in different location, can I use the continuation of IP address range
172.16.1.xx for that office location, since I want to all the machines in both offices should communicate each other, if I want that way, do I should have a separate leased line between these two offices?. Can I do that way?. thanks.
WHY? Won't That will prevent NAT from isolating the one office from the others even if they are on different subnets?
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