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IP address

pontifex

pontifex

Lifer
the last octet of an IP address has to be 1-255, correct?

Well, I'm trying to run a ventrilo or teamspeak server from my PC which has a dynamic IP address. I just want it seto up so my friend and I can talk to eacher other through it for a few hours while playing games online.

So I set up the servers and go to whatismyip.org and it says my IP address is #.#.#.0.
THe other IP checker sites say the same thing.

My friend can't connect. It may be a firewall/NAT problem on my end but I think I have everything set to allow those programs and ports.

The IP address is really throwing me off though. How can I have 0 as my 4th octet?

 
Zero in any of the last 3 octects is just fine. It depends on the subnet mask.

For example 10.1.1.0 with a mask of 255.255.254.0 means the network is 10.1.0.0, broadcast is 10.1.1.255.

Usable addresses:

10.1.0.1 - 10.1.1.254. This obviously includes 10.1.1.0.
 
Originally posted by: spidey07
Zero in any of the last 3 octects is just fine. It depends on the subnet mask.

For example 10.1.1.0 with a mask of 255.255.254.0 means the network is 10.1.0.0, broadcast is 10.1.1.255.

Usable addresses:

10.1.0.1 - 10.1.1.254. This obviously includes 10.1.1.0.
Click to expand...

ok, so then it must something with my router or dsl modem then i guess.
 
Originally posted by: spidey07
Zero in any of the last 3 octects is just fine. It depends on the subnet mask.

For example 10.1.1.0 with a mask of 255.255.254.0 means the network is 10.1.0.0, broadcast is 10.1.1.255.

Usable addresses:

10.1.0.1 - 10.1.1.254. This obviously includes 10.1.1.0.
Click to expand...

Unless you use Microsoft products. They won't use that IP, even though it IS allowed. Most folks won't use .0, I have seen some use .255 (not sure if MS will allow assignment of that one or not).

OP, post your IP, with Subnet Mask and then maybe we can help. Also, did you forward the correct ports on your router to your PC?
 
I have a dynamic ip address for my DSL connection. it was 70.5.191.0 according to whatismyip.org. Not sure how I'd get the subnet mask for that.

I think I'm forwarding the correct ports.

I have a Buffalo router with NAT settings. I also have a DSL modem that has a firewall and NAT settings.

I'm not quite sure I know how to use the DSL modem's firewall though.
It has 4 setting groups - LAN to LAN, WAN to LAN, WAN to WAN, and LAN to WAN.

I allowed the ports on all 4 groups. I also set my router and modem NAT settings to send stuff on those ports to my internal IP address.
 
if it's a crappy qwest modem, update the F/W, it's much easier (and actually might work) after that. It failed to work for me before that.

check the status or info page for your router, should show WAN IP, Netmask, and Gateway.
 
I don't find any open ports (if you see a port scan in your logs from a 216.119 address, that was me 😀)

just did a quick nmap -P0 ip.address of the machine.
 
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