Can you get hacked if someone knows your internal IP address?

It could also be 10.*.*.* as well as 192.168.*.* and one or 2 more I'm forgetting. These address ranges have been set aside for use on private networks. The key word here is private network.

If you have an open wireless connection, and many do, someone could sit outside your house with a laptop and access your private network. If you turned it off or protected it, then mostly no worries. The wireless protection in some older routers and even some newer routers if set to be backward compatible, would be weak and somewhat each to crack.

There is one more vulnerability that many dismiss. If you set your router to pass through all connections to your computer or another computer on the network, it is as if the router wasn't there at all for that computer. You don't need to know the internal IP address because it is open to the external network and for practical purposes has the same IP address as your external router IP address. In this case you should be running a good software firewall on the specific computer getting the pass through. Rather than pass everything, what you should do is pass specific ports for individual games and other programs that may require ports accessible from outside of your private network.

Otherwise, without a Trojan horse program or something similar that can access the external network, no one can generally get into your private network through the NAT router.

Shadow Wolf

The only way they could that is if they are directly connected your network without going through the internet.

Like using an ethernet port on the router or connected within the router's wireless range.

192.168.0.1 is an IP address that accesses all routers.. i dont think theres an issue if someone knows it, considering its the same for everybody.

EDIT: typo. sorry.