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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Scanning a network and SSH each IP until I get in through SSH

Normally, I would SSH into that machine using: ssh user1@123.45.67.8 That server in my network is forced to use DHCP in the subnet (134.96.90.0). And everytime it shuts down, I have to go find the ...
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1answer
37 views

Whitelisted IP has reset, how can I change it back?

I (used to) have an IP address that had been whitelisted to access a website via FTP. My IP has randomly been reset and I need to change it back so I can use FTP again. I have the whitelisted IP ...
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2answers
128 views

Point dynamic IP address to domain automatically

I want to move all my projects from Shared Hosting to a personal server, basically a server in my home using my 200Mb Fiber connection. The first problem I have is my dynamic IP address. It can ...
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1answer
87 views

odd way of rendering math formulas in wikipedia [closed]

I am encountering a strange problem that has stopped me for several hours. Wikipedia shows math formulas as LaTeX code but I don't have this problem in other sites like Math SE. The photo shows ...
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1answer
29 views

Same IP adresseses are working fine in my hostel. How is it possibe?

Me and my friend are using the same IP address however we are getting no error message of IP conflict. How is it working. We are receiving the data that we requested for and so how is this possible?
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1answer
157 views

How can my personal ISP connection return two public IP addresses?

I want to play a game (Wildstar) but each time I login, it gives me an “invalid login token” error. After looking into the issue, I found that it was caused by, according to Wildstar: WHAT DOES IT ...
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0answers
76 views

How to prevent the browser to resolve ip address to domains names?

I'm giving some introductory classes of web programming to some people and in the next class I will explain the concept of DNS. I want to show them that you can access websites normally just with the ...
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1answer
29 views

Using the ISP assigned IP behind a router

This question is more on networking than on programming, hence I am asking here on superuser. I am using google hangouts api and there I need to put my computer's ip in google developer ...
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1answer
326 views

Can I setup a VPN at home or on a VPS and connect to the Internet through it?

My employer in the US has asked me to obtain a static IP address to enable him lock down his servers to the general public, allowing just our IP addresses. The cost of obtaining an IP address here is ...
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1answer
210 views

Static IP address outside of DHCP subnet?

I just set up a wireless repeater bridge. My primary router's IP address is 192.168.1.1. I had a friend guide me over the phone on setting this up. He told me to set my bridge's IP address to ...
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3answers
334 views

Why is there more than one loopback IP address?

Most applications only need the one loopback IP address of 127.0.0.1. However, not only is the address block 127.0.0.1/32 provided, and even 127.0.0.0/24 is provided as well but in fact the whole ...
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4answers
2k views

Are subnets always contiguous 1s? [duplicate]

I understand the basic premise behind subnet masks, such as 255.255.255.0. But all the subnet examples I’ve seen have been (from left-to-right) contiguous 1s (HI bits). For instance, 255.255.0.0 (/16) ...
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0answers
53 views

detecting the router's ip address using arp command

When I use the command arp -a I get the list of IPs in my network. the first IP address after the address of my own pc (that I run command) is the IP address of the router. I want to know is the ...
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1answer
49 views

How to make the same WiFi adapter work on two different networks with different DHCP configurations?

I have a tablet that is going to be used in two networks: One network has DHCP deactivated while the second one has it activated and uses a different range of IP adresses. The problem is that if I ...
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1answer
122 views

VLSM: Any easy way to learn it

After my first year at university our teachers decided to make VLSM exams and exercises a bit harder. For exactly 1 year ago we got 3-4 hours to subnet using VLSM and then start with Packet Tracer ...
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0answers
95 views

Router reachability / configuration issue

I'm facing a weird problem at home and have been trying to find the root cause of the following problem, and solve it. I have a Motorola router at home and its public IP is 104.32.170.156 (taken from ...
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1answer
71 views

How to assign a PHP script to an IP?

I use Windows 7 and my idea is to connect 4 GSM modems to my Windows 7. I would like to run 4 PHP scripts on these 4 different IPs from each modem. ex: script1.php is seen as IP assigned from ...
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0answers
61 views

dedicated server's IP as public IP of local network without public IP

My router at home is connected to my provider using a local IP, I CANNOT have a public IP. I have a dedicated server with a public IP. Is it possible somehow to make that public IP the one of my ...
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0answers
93 views

PC hotspot unable to connect with Android device

I want to share my laptop wifi with my phone. I used many ways to make a hotspot(cmmd prmpt and multiple sw's) and did make them , but the phone never connects to any of them , and always stops at ...
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1answer
505 views

Mikrotik - 2 Static IP For WAN Only one Ip Worked

I have Mikrotik Router board I have 2 ADSL internet with 2 Valid IP that I connect to adsl with pope connection My config is pppoe-WAN1 IN ether1 pppoe-WAN2 in ether2 Defaul route is ether1 When I ...
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2answers
55 views

How to reroute an external DNS address to internal address, ONLY when on a local network?

So I own my own personal server for files/media etc. I currently have my computer set up to do some syncing with my server, but there’s one problem. When I’m on my home network, I have to use an ...
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1answer
144 views

How netcat can`t receive UDP packets?

I have a simple UDP device (ENC28J60 ) connected to my computer with a direct cable. The device configured to send UDP packet to 192.168.133.1 IP, 6661 port. The computer ,Fedora 22 OS, interface ...
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145 views

Port forwarding works locally over LAN IP but not over the router WAN IP from another building

I have a commercial setup where everything is on the the same xxx.xxx.xx.1-255 network. I have a D-link router (DIR-615) that is on this network in another building with the router IP as ...
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37 views

How to show all IPs of network interfaces using “ifconfig”?

I am using the Kali Linux distribution and I came across this issue that I can't solve: when I type the command ifconfig in the terminal I get the following network interface infos: As you can see ...
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1answer
70 views

How i can disable access to my local machine form another local machine by \\ip address\c$?

Someone in the same local network here has user full control administration he can enter to my partitions D, C, E all partitions by type in start menu \\my IP address\c$ he can copying and delete my ...
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2answers
730 views

can't ping to my public ip (I am using a 3G dongle)

I found my public ip by googling what is my ip which is a google provided service(The IP is shown above the search results). I tried to ping that public IP from another computer that is connected to ...
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1answer
119 views

DNS serving up different IP addresses dependent on www or non-www?

I am in the process of moving the website traffic for adadarters.com from old host to new host. We are keeping old host for various reasons, including mail and ASP files that we don’t want to move, so ...
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1answer
185 views

How to Connect Two Networks of two different wireless routers with their own ISPs

The first router is a TP-LINK WR740N v5: Has a Direct WAN Cable connected to it. The service is reliable, but slow (1 Mbps) IP Address of LAN is 192.168.0.1 Hands out IP addresses from 192.168.0.2 ...
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3answers
96 views

So what does /24 have to do with 255 in hosts IP addresses?

Quote: For example, 192.168.10.0/24 would scan the 256 hosts between 192.168.10.0 (binary: 11000000 10101000 00001010 00000000) and 192.168.10.255 (binary: 11000000 10101000 00001010 11111111) ...
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4answers
130 views

IPv4 Routing/Subnetting

Suppose there is a setup like below: ------ -INTERNET- ------ ...
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0answers
274 views

Is it possible to connect a P2P IP Camera to a mobile router wirelessly

I have purchased a Megapixel Wireless P2P IP Camera and I'm having trouble configuring it. It seems when I read the manuals that I need to make a wired connection with a RJ45 network cable to my ...
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1answer
93 views

Can't connect to ssh server by global IP address when not on the server's Wi-Fi network

When on the same network it works fine with either the global or local IP address being used. I am forwarding port 22 like this: IP Address Start Port End Port IP Address Start Port End Port ...
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1answer
49 views

How to extract ip address from no-ip account webpage in the shell?

I've set dynamic dns for my home network(which is behind NAT) using www.noip.com. I use ddclient to send updates of my ip, but sometimes it takes a while to update the ip. Anyways it's not the point. ...
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0answers
26 views

Ip addresses info [duplicate]

If someone sends you an email from the Philippines is it possible to have a ip address from the USA and the ip address shows up as being one used by scammers.I have received 2 emails from 2 different ...
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1answer
110 views

Is it possible to install 2 IP cameras in the same Wi-Fi network in a way that they are both visible by external networks, e.g. 3G mobile networks?

As just stated in the title, I am having trouble installing 2 IP cameras such as these pictured below. Basically, they both work with Wi-Fi network, but when I switch on 3G only one of them is visible ...
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0answers
36 views

Outgoing traffic using Local(internal) PC IP address to a DDNS hostname

Sorry if the title is confusing. I have two devices connected through the internet. I need device A (Windows Server 2012) to send data down to device B, but unfortunately device B does not have a ...
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1answer
49 views

media disconnected with DNS_PROBE

I am getting a DNS_PROBE_FINISHED_NO_INTERNET in windows 7. In Ubuntu 14.04, it just says I have no internet. I tried to use the ipconfig commands found on google,but most of them wouldn't work ...
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1answer
113 views

Broadcast address for address 144.16.95.255?

A subnetted Class B network has the following broadcast address : 144.16.95.255. Its subnet mask (a) is necessarily 255.255.224.0 (b) is necessarily 255.255.240.0 (c) is necessarily 255.255.248.0 ...
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1answer
63 views

Falsly accused of having fake email account [closed]

I was accused of having a fake email account and I did not have one. I was accused of sending emails to people and I did not. The people that are accusing me of sending these emails and I did not, ...
0
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1answer
71 views

What's the minimum hardware for CISCO IP phones?

I have a SOHO setup with about 8 computers/laptops/servers on a LAN and a regular ADSL internet connection over the phone line. There is no EPABX. Just a regular phone line (after the DSL splitter). ...
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0answers
41 views

Network Issue Windows 7 Fresh Installed Self Assigned IP Adress

I was fixing a laptop with connection issues. Well after some research it was for the best to reinstall all. Fresh Windows 7 Home Premium install and still connection issues (others then before but ...
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1answer
75 views

Multiple entries in a forum from same IP

Sorry if the title is a bit confusing. Recently, I joined a forum event. They were strict about one entry per IP. The mods contacted me and told me that multiple entries were entered from same IP. So ...
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4answers
2k views

Is the external IP of my wireless Router my WAN IP / Public IP address ? if not then what is it?

This is my home network setup: Internet ---> External IP (cable modem) Internal IP ---> External IP (wireless router) 192.168.20.1 ---> (laptop) 192.168.20.102 Am I correct to assume that ...
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0answers
153 views

Chrome: DNS_PROBE_FINISHED_NXDOMAIN

I'm having problem browsing a website. If I type in the domain name, I get ERR_NAME_RESOLUTION_FAILED; and if I use the website's IP address instead, I get DNS_PROBE_FINISHED_NXDOMAIN. Thank you.
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31 views

How to get `netstat -tpn`-like output with `ip` utility

How (or is it possible) to list all open TCP(/UDP) ports using ip utility on Linux (preferably with their owner processes)? I want something like netstat -tpn.
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1answer
117 views

How do I use allow/deny in conjunction with set_real_ip_from?

My nginx backend server should only accept requests from my frontend, 1.2.3.4. However, I also want nginx to log the correct IP address, so I use set_real_ip_from. But by doing this, the allow rule in ...
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3answers
83 views

Can WireShark be used to collect packets on same network?

I am trying to sniff packets using Wireshark. But Wireshark collects packets of computers connected to my Router only. If i know the IP address of a Computer , can i sniff the packets of that Computer ...
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1answer
88 views

Forward a website request to an internal ip

I've written a web app for use at work that I will be running on a local server. Everyone on the local network will be able to access it. I can currently access it with a local IP (ex. 192.168.1.65). ...
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1answer
46 views

Retrieve IP from a mail I received

I already made some researches about this subject on the interwab, but I couldn't find what I wanted. Here is the point. I'm a beginner highly interested onto web security and something blew my ...
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3answers
76 views

Are non-prefix netmasks possible?

Every netmask I've ever encountered is a prefix, neatly expressible by the CIDR notation: /8 for 255.0.0.0, /16 for 255.255.0.0 and /24 for 255.255.255.0. Of course, we can change the length of the ...