0
votes
1answer
54 views

When is the subnet mask used?

My NIC on my computer has a subnet mask. Is this only for it's own information? Or does the subnet mask get tossed into the TCP/IP headers to help the next device up route it? I'm guessing it's only ...
1
vote
1answer
370 views

What is major network mask and subnet mask

I've been served with a question to find Major Network Mask and I've only given Host IP address and sub-net mask. I have to find the Major Network Mask using Host IP and sub-net mask. Another ...
0
votes
1answer
179 views

How to force to send data to router (on L3) instead sending directly? (on L2)

I have a public IP-addr on one machine: a.b.c.156/32 The GW is a.b.c.133 (which is in the /27 network with its gateway a.b.c.129) I statically added an arp route: sudo arp -an a.b.c.133 at ...
-1
votes
1answer
92 views

If I have a subnet mask of 255.255.255.0, what is the next valid subnet mask address [closed]

If I have a subnet mask of 255.255.255.0, what is the next valid subnet mask address on either side (above or below)
2
votes
1answer
209 views

Is there a way to detect a LAN's IP and its subnet mask?

I'm not a English speaker, but I'll try my best make it clear: If your laptop connects to a unknown local network (through a wireless or wired router) and there's no DHCP service at all, and nobody ...
3
votes
2answers
8k views

What is the difference between a subnet mask and a netmask?

Is there any logic in using two different names for determining host ID and net ID? For example, if you type print route in a Command Prompt you get things with netmask, but the IPv4 settings seems ...