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5 votes

How do web browsers find out the MAC address?

So, how does the computer find out the MAC address of the server? It doesn't. The MAC address only has validity inside a local area network (LAN), which, as the name says, is local. Unless the ...
dkaeae's user avatar
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5 votes
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ip/tcp packet decoding without wireshark

My guess is that what you are seeing is a Level 2 Ethernet frame and therefore the preamble is missing. Also the Ethernet checksum seems to be missing. In this case everything seems to line up (the ...
Steven's user avatar
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5 votes

Ip address release/renew

The DHCP protocol spec, RFC 2131, encourages a DHCP server to remember client configuration parameters when an IP address is released in the hope that the parameters can be reused when the same client ...
Kyle Jones's user avatar
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3 votes
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Why use private IP addresses in a LAN instead of MAC address

It's not an "instead". Every packet that is sent using IP contains both a MAC address and an IP address. You need both, because the IP-layer protocol stack understands only IP addresses, ...
D.W.'s user avatar
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3 votes

Basic Question in networking - why max data size of ip datagram 65535 BYTES and not 65535 bits?

16 bits is not the size of the IP datagram; it is the amount of bits required to encode its length. Hence, you can have datagrams of length up to 65536 octets (i.e., bytes), as described in RFC 760: ...
dkaeae's user avatar
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2 votes
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which ip and mac address is added to the header of data packets?

A packet only contains the final destination IP address otherwise it would be lost. On a Windows computer, type route print in CMD to see the routing table of your ...
user123's user avatar
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2 votes
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Is IP a property of the device one uses or the router through which one connects to the internet?

It depends on how your network is configured. Since you talk about a router, most domestic users have a public IPv4 assigned to their router and then a private subnetwork for all the home devices. The ...
Steven's user avatar
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1 vote

Ip address release/renew

Although this doesn't answer the question directly, I think it may be relevant for some readers. Because DHCP is optional, you can set whatever IP address you want for your device. Beware it's up to ...
M Virts's user avatar
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1 vote

How does concept of "redirection" works in ICMP?

Now what? A only knows about R1, it doesn't have information about R2, how will it send data to R2? R1 sends R2's IP address in the Redirect Message to A. That is the whole point of the Redirect ...
Jörg W Mittag's user avatar
1 vote

Is IP masquerade and Network Address Port Translation(NAPT) the same?

IP masquerade is the same as NAPT and the only difference is that when NAPT is used in Linux, it is called IP masquerade. The mechanism is the same, it's just the place where the technology is ...
Nurin Izzati Jafri's user avatar
1 vote
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Why are processes on the internet not required to use TCP or UDP?

In this context, a process is a normal computer application process, e.g., as defined in wikipedia: a process is the instance of a computer program that is being executed by one or many threads. It ...
auspicious99's user avatar
1 vote

binary representation of ip prefixes

For a netmasked IP address xxx.xxx.xxx.xxx/N, convert each xxx octet in the address to binary. The masked address is the leftmost N bits with all other bits replaced with zeroes. So 10.0.0.2/2 ...
Kyle Jones's user avatar
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1 vote
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network address translation

Usually writing an ip address and a number after the : ,it means the number after the : is the port In the internal part: 192.168.0.2 is the private ip address of the host its his ip address inside ...
Noname's user avatar
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1 vote

How do web browsers find out the MAC address?

Your computer sends a request to your router, and the router sends it to the IP address of the server. Included in the request is your router’s IP address. So the server sends the website to your ...
gnasher729's user avatar
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1 vote

All-zeros subnet and All-ones subnet

Not "it is said", in IPv4 the "host part all zeros" address defines the (sub)net (and isn't available as host address), the "host all ones" address is broadcast for the (sub)net (and also isn't ...
vonbrand's user avatar
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