The IP (internet protocol) is a protocol for transmitting data over packets ("datagrams"). It is the primary protocol of the Internet. "IP" may also refer to an IP address, the numerical address assigned to an IP-capable device.

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trying to set dhcp fallback address but avahi-autoipd seems to be overwriting it

I added timeout 10; lease{ interface "eth0"; fixed-address 169.254.1.42; option subnet-mask 255.255.0.0; } to /etc/dhcp/dhclient.conf and this is what I get from ifconfig after doing ...
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2answers
46 views

Confusion in IPv4 addressing scheme and classfull addressing

I am relatively new to the field of computer networking. I am trying to understand the subject. I know that the question here might be outdated but I still need to understand "why", because I am just ...
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2answers
39 views

traceroute simple real time example

I am relatively new to the field of computer networking. I am trying to understand the subject. I know that the question here might be outdated but I still need to understand "why",because I am just ...
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1answer
32 views

practical example for the architectur of the internet

I am relatively new to the field of computer networking. I am trying to understand the subject. I know that the question here might be outdated but I still need to understand "why",because I am just ...
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2answers
27 views

How do I keep my internal IP?

Whenever my router restarts (D-Link DIR-655, firmware v2), the internal IPs get scrambled among everyone connected, in the order they connect (and because everyone on the network is set to ...
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1answer
18 views

Geolocation database or api [closed]

Hi guys what is the best geolocation database out there? except maxmind because on some ip's isn't so accurate. And the html5 API isn't an option
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3answers
25 views

DHCP Reservation (MAC)

I've been having problems with a few statements I've been reading. When setting up DHCP Reservation based on MAC addresses... Do the reserved IP's need to be in one of the scopes or not? Judging from ...
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0answers
11 views

Isn't TTL value length too larg?

TTL value length is 255.I know sometimes when packets are waiting in queue TTL reduces without hop changing.But TTL is often equal to the number of hops.Isn't 255 too long?!Isn't 30-40 more logical? ...
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2answers
54 views

Is ip address unique to a user? [closed]

I don't have a great understanding of how networking works. From what I understand the WAN ip address which is visible to the outside world is different from thed LAN ip address. Inspite of that at ...
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0answers
25 views

Strange route through private IP instead of ISP

After performing a traceroute this morning, I noticed my traffic is not passing through my ISP at all and just after my router there is a private IP address of 10.10.0.34 which I have never noticed ...
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1answer
32 views

Can I have my web hosting company redirect all requests to an IP address? (from blahblah.example.com to 123.456.789.012) [closed]

I have a web hosting account, from FatCow. They gave me a subdomain, blahblah.fatcow.com. Would it be possible to simply redirect all traffic from that subdomain to my home IP address? For example, ...
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1answer
37 views

Computer not connecting to wireless getting 169.254.x.x address

I have a computer trying to connect wirelessly to my network. All the other computers behind this router have a 192.168.1.x address, this computer is getting a 169.254.x.x address. I know that this is ...
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0answers
37 views

accessing server internally using it's public ip address [closed]

Accessing a server from internal pc using the server public ip address public users can access the server externally and internal user can access the sever internally using the server internal ip ...
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1answer
25 views

Firefox not requesting scripts from domains hosted at 127.0.0.1

I have 127.0.0.1 ajax.googleapis.com in my hosts file and a script listening (and dummy-serving) on port 80. When I load http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js directly, ...
0
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1answer
20 views

how to take subnet mask for an IP.

I am having difficulties to find the subnetmask for a given ip address. I am reading one textbook and there i saw an example which i still dont understand how they picked up a subnetmask. here it ...
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1answer
32 views

Device is connected to network, but doesn't have an IP

I have a DroboShare (NAS drive) connected to my router (directly, not wifi), but the software that runs the Drobo couldn't find it. I can access the drive directly by Start --> Run --> "\droboshare", ...
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1answer
31 views

How do I setup DNS names and static IPs for an Ubuntu virtualbox?

I have Ubuntu installed on VirtualBox, on top of a Windows 8 host. How can I setup a static IP and DNS name for this virtual machine that other virtual machines will see?
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2answers
49 views

Is there any way to trace a facebook page owner IP? [closed]

I am in a country which limits political opinions I need to create a facebook page but first I need to know is there any way that someone can trace my IP ? In other words could I be busted ? Please I ...
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1answer
41 views

Get public IP from remote wireless access point [duplicate]

Is there a way to find out the public IP of a wireless access point in the "available networks" list without being connected to it?
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1answer
28 views

How to change wireless carrier on a windows phone [closed]

How can I change the wireless carrier AT&T on a windows 7.5 phone, I have a sim card for telcel america everything works I get e-mails and updates from facebook but I can not surf the netor get ...
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0answers
24 views

Software evaluation-registration verification [closed]

I download the trial version of a latex editor, Bakoma. After 30 days of evaluation, I tried to install it on a virtual machine (VMWare) and use it. But both surprisingly and not-surprisingly, it ...
3
votes
1answer
58 views

Relation between a packet and a frame over the network

I am learning how networks work and I have a question. What is actually sent over the network? A packet/datagram or a frame? I believe it is a packet. If so, let's say Computer A wants to communicate ...
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3answers
175 views

How to make ssh tunnel open to public?

Well refering back to this question i am running the command ssh -R 8080:localhost:80 -N root@website.com on mac. Yet the port that is being tunneled is not working publicly. I am running such a ...
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1answer
33 views

How to make my IP address appear to have a specific prefix (when connecting to a ssh server)?

I have ssh access to several machines at our university computing center, but they only allow connections from within university network which means I have to go on campus everytime I need to run a ...
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2answers
84 views

What could be the reason for a Windows System to have multiple preferred address?

While googling, I came across the following Question Multiple Preferred IPv4 Addresses, where the user reported that multiple IPs were shown as preferred. I found few other places where the same ...
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1answer
69 views

Extract ip address from specific NIC in win7 batch file

I am building a batch to automatically switch a proxy config and the related ip settings bui i am having trouble extracting the ip address of the network adapter i need. I have one "real" nic, and two ...
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3answers
53 views

Reserving DHCP address

I am working in a serviced office, where I do not control the DHCP server. I have more than 3 machines that I need to have the same IP address after they get assigned. How would it be possible for me ...
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2answers
46 views

Why does ping sometimes decrease in a traceroute?

I've run a traceroute. (see image). The "Avg" column shows that on hop 7, the ping actually decreases between ping 6 and 8. This can't be due to an anomaly because this data is averaged over 24 ...
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0answers
147 views

How does iptables masquerading allow to access a different local subnet?

My Linksys router (IP 192.168.1.1 inside a /24 subnet) is connected to my ADSL modem (IP 10.0.0.138 inside a /24 subnet) to establish an internet connection via PPPoE. To be able to access the modem's ...
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2answers
100 views

Simulating multiple IP access

Is there any way to simulate multiple IP access for a particular app (my app) from one machine? I do create some interesting facts/reports based on client IP, which is not related in anyway to app ...
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1answer
30 views

My laptop can't find a device that is connected to a my router but my other laptop can find it

I have this device that uses port 80000 and UDP. It came with a program that communicates with it. However, my laptop (laptop A) can't find that device using the program. So I tested the program to my ...
3
votes
1answer
66 views

From where does IP geographical location data come?

I don't understand how some sites (e.g. https://www.ultratools.com/tools/geoIpResult) show country and town for an IP address. For example 193.45.10.135: Continent: Europe Country: Germany Country ...
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1answer
50 views

Remote connection with a public IP

I want to connect remotely to a friend's computer via remote desktop. That remote PC is not in the same network. I should connect through the Internet. I know, we should need a public IP address to do ...
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1answer
65 views

Enter Network Password [duplicate]

When I try to open shared folder in another computer, it opens correctly. Ex : \\192.168.1.1\folder1 But When I try to enter \\192.168.1.1\c$ , it asks a Username and a Network password. But that ...
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0answers
74 views

Is it allowed to Ping Backbones or other ISP Servers for a prolonged pingtest? [closed]

I made a few Ping tests until now, once I made it a whole week, but now I'm not so sure about the thoughts of the Admins which are owning the servers I ping. Now, I have found a few posts which are ...
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2answers
97 views

How to circumvent a private WAN IP address?

I just signed up with a new ISP and I got a dynamic private-range (172) IP as WAN address on my firewall/router, so I can't do any port forwarding. They say that to do port forwarding I must buy a ...
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0answers
38 views

Advanced QoS on prioritized first packages set by ISP

I have the following problem my ISP (Fibertel from Argentina) accelerates, 'enhances' the first 6.8 megabytes of downstream transfer and it's seems the first 1.8 megabytes of upstream transfer. This ...
0
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1answer
47 views

OpenVPN configuration

Preamble: I am lucky to have an IP subnet which has real IPs, so no NAT. I have a network from 1.2.3.0 to 1.2.3.128. I have a Debian server with an eth0 interface say 1.2.4.9. Now I want to have an ...
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2answers
57 views

Splitting and connecting a small subnet

It's been a while since I built out a network so bear with me as I've lost some of the nomenclature. Given "5" usable static IP addresses from our ISP is it possible to use 3 of them for globally ...
0
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1answer
53 views

How to create local network in virtualbox between Ubuntu server

I created a Ubuntu server on virtualbox that Ubuntu server install with minimal virtual machine. I created the three linked clone and I have internal network between them. I removed ...
1
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3answers
149 views

Can we use public IP addresses on private networks?

Think, there are two computers which use two private IP addresses to connect each other. They don't connect to a router so there's no NAT in here. Just peer to peer. But I want to know, can we just ...
0
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3answers
92 views

I should have a dynamic IP, but it won't change

I have run ipconfig /all, which tells me DHCP is enabled, meaning I should have a dynamic IP address. However, no matter how many times I restart the modem, I end up with the same IP address. What am ...
0
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1answer
100 views

TCP\IP Packet Signature - how to identify such data packets?

I know of a program that can "carve" (look for) TCP IP Packets from raw binary data. The results it presents are the source and destination MAC addresses, the source and destination IP addresses and a ...
10
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7answers
671 views

Is it possible for many domain names to share one IP address?

Is it possible for many domain names to share one IP address? For example, www.xjtl.com, www.fmie.com, sdmfl.com, etc. Hundreds of domain names share just one IP – when you do a DNS query for each of ...
0
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1answer
40 views

Mulitple ISP IP's pointing to one router

My ISP is providing me with two dynamic and one static IP. My question is: How is it possible to have three IP's, but i only have one router? Or is it that i can only have a static or a dynamic ip ...
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0answers
20 views

GNU/Linux: Make bad connections usable

I have recently been traveling. On my way I experienced 3 different bad connections: Long latency (1000-10000 ms with around 10% loss) High packet loss (50% loss) Connection flapping two hops from ...
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1answer
36 views

See which dns addresses link to your ip?

I have a server on an IP with one dns listing pointing to it. Is there any ways to see which urls are set up to go to this ip. Also, is there a way to prevent people from setting up dns listings that ...
7
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3answers
246 views

How do routers assign IP addresses?

How does a router assign an IP address? Is this random or is there a set method? It seems that the same device – regardless of the time it was connected – seems to get the same IP assigned. Does the ...
5
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3answers
944 views

What's the difference between 127.0.0.1 and 127.0.0.0

I know that both are loopback IPs, but they have another ip mask. What's the difference between them? Can they be used interchangeably? ...
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3answers
64 views

Finding IP address of a PC when it changes by making some setting

I have a shared PC at a remote place on the LAN. I usually work on it using remote desktop connection. Sometimes the IP address of the PC gets changed when someone accidentally or intentionally ...

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