Questions tagged [ip]

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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487 views

Route between two machines on the same network (but different IP ranges)

This is the network topology I'm working with: .______. | | |Modem | 10.0.0.1 |______| | | .______. | `----------------| | | |Box A | ...
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How to do sites uniquely identify a computer/network online?

I completed a survey that stated I am only allowed to do it once per day. If I try to do it again, I am not allowed as expected. I am trying to find out how they know that it is from the same ...
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How to browse to the IIS homepage on an external device after installing Windows Server 2012?

I installed Windows Server 2012, in my home network I can type the ip address of the server in any browser, on any device and the IIS homepage opens up. When I want to open the website on an ...
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367 views

SSH protocol: 1 ip, 2 domain names, 2 servers

Is it possible to have this scenario? (I am not talking about websites or anything related to apache) both example1.com and example2.com point to same IP. If I ssh to example1.com:22 it goes to ...
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1answer
360 views

How do routers deal with IP packets whose source IP or destination IP is all zero?

All zero IPs are said to be unknown IPs. I'm wondering, if the source IP or the destination IP of a IP packet is all zero, how do IP routers deal with it? FYI: I'm doing research, and I want to use ...
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Find router IP address and access router configuration

I am having problems configuring my router. I am running windows 7. I gathered that you got to the router configuration page by entering its internal IP address in the browser, and that this internal ...
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2answers
2k views

Same IP for WLAN and ethernet on Linux

I have a laptop running Lubuntu 13.04. I use ssh -X to log into my server and start programs there that I view on my laptop. When I pull the ethernet cable, the laptop switches to WLAN but my ssh -X ...
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1answer
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PC can not receive an IP address while my router can

Situation Recently I changed my local network architecture a bit, because of which I now connect directly to my modem with a UTP cable to my pc instead of over wi-fi via a separate router. For some ...
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ASUS router EA-N66R has different subnet mask than laptop

I have a new ASUS router that works perfectly, and I'm trying to set up an ASUS EA-N66R repeater to use with that router. But when I connect my Ethernet from my laptop to the repeater, the setup will ...
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176 views

New domain not working on computer that purchased it

I recently purchased a domain name from Hover.com for my website. My nameservers have updated and everyone can access the site... except me. Friends from across the US, local friends, other ...
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Malformed IP Address, new ubuntu installation

I am installing a Ubuntu 13.04 from virtual disc over IPMI, yet when I come to manually configuring my network it tells me my IP address is malformed and should be in the format 'x.x.x.x' when it is. ...
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Lookup URLs from list of IP addresses

My router log notes activity by IP address but I want to see the corresponding URL addresses instead. Is there a way to derive the URLs from the IPs--in bulk/batch--without having to do it manually/...
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How do I fix SSH sending fragmented packets

My ISP sometimes drops IP Fragments. This manifests itself in SSH thus: I can login fine and run commands that output short strings, but running something like "ps fax" causes the link to lock up. ...
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899 views

Windows Server 2008 R2 having FIVE different IPs?

No idea what's going on. Windows Server 2008 R2 connected to a Buffalo DD-WRT router. I set a 192.168.1.150 static IP on the Windows and NOT on the router. Maybe 75% of the time it works fine, the ...
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6answers
91k views

How to find IP address of router connected to another router?

I'm trying to setup two routers in my home network, and I'm confused here. My system looks like this: So the router 2 is connected to the line. And I'm (my PC is) connected to router 1. When I type ...
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2answers
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How to configure my 2 router to make them as access points

I have this broadband and the main wireless router: Main Router Also I have two other routers and would like to make them as access points. So All with the same SSID, then the device can choose the ...
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268 views

unauthorized users on network [closed]

I've been told I have unauthorized users on my network: I've since removed my wireless router and just hardwired to my modem, but now I'm needing to clean the junk from my network...I don't know how. ...
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1answer
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How to find CIDR subnet for a public Internet IP address?

Usually I do not worry about subnet of an IP address on the public Internet, but after I began using Amazon EC2 firewall, it got me thinking. EC2 firewall configuration requires an IP to be written ...
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1answer
946 views

Regarding IP subnetting process

Professor taught the following scenario. An organization has purchased a Class-C address 216.21.5.0 and would like to use it to address its offices at Arizona, Florida and California. It has the ...
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364 views

Why APIPA doesn't work with multiple network adapters?

I connected 3 cameras to 3 network adapters in my PC. I don't have DHCHP, so I thought APIPA will do the work. But, camera's installation guide says "If a PC is equipped with multiple network adapters,...
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2k views

Local DNS server is required to use names instead of full IP?

My computers have local IP addresses such as 192.168.0.X. And many of the computers have names such as "MyPC" or "YourPC" etc. It seems on Windows, in most cases, just using "MyPC" instead of the ...
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Can not assign a specific ip under lan

in LAN under router there is static ips are configured, all connections are working properly and internet also is working very well, except a specific ip which is "192.168.2.2" which was working ...
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2answers
768 views

How are local ip addresses separated from public ones?

How does tools like ping, or any other tool that uses the tcp/ip protocol know that for example 192.168.1.1 or 10.0.0.1 is a local ip address while 8.8.8.8 or 74.142.23.95 are public? are 192.168.x.x ...
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1answer
118 views

What is the device in the middle?

I did a traceroute on an IP address and got these results. I am only showing hop 9, 10 and 11, where it crosses over from my provider to their provider: 9 13 ms 13 ms 16 ms host213-121-193-...
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3k views

Ping retrieves an IP from DNS, but loses all packets

I'm working with a minimal installation of RHEL 6. When I first turned this machine on, it couldn't ping anybody. It turned out that I needed to add the GATEWAY under /etc/sysconfig/networking and ...
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3answers
5k views

Access local network through one public IP

I have a local network built up with 8 computers connected to switch. Main node has a public IP, so I can ssh it from external network. Is it possible to access other 7 nodes without assigning public ...
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2answers
13k views

How to block an IP address from a network share

I have to share a set of .docx files from my computer. They are set so that administrators have full control over the shares, and "everyone" has access to read and execute them. I need to find a way ...
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1answer
3k views

Why I cannot ping local IPs on my Mac? [duplicate]

I'm trying to ping local IPs on my Mac but it's not working as I would expect. If I ping 127.0.0.1, there's no problem: PING 127.0.0.1 (127.0.0.1): 56 data bytes 64 bytes from 127.0.0.1: icmp_seq=0 ...
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3answers
5k views

Network addressing without wasting IP addresses

I know how to do the classic "network addressing" when I am allowed to waste IP addresses. For example, if I need to hook up 9 computers, I could use a /28 subnet, which allows 16 hosts to be mapped ...
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0answers
160 views

IP range in command line

I am looking to use powershell and task scheduler in windows 7 ultimate 32 bit to redial vpn should the vpn connection drops. I found a scrip ( http://blog.degree.no/2011/10/permanent-vpn-connection-...
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4answers
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Unable to ping a Windows machine from Linux

I have Windows installed on my laptop, connected to the router wirelessly with IP 192.168.1.5. My desktop is running Linux, connected to the same router (wired) with IP 192.168.1.2. When I do a ping ...
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427 views

One public IP for dedicated server - a few VPS with the same IP?

I bought a dedicated server. To him I got a single public IPv4 address. On this dedicated server I installed the latest version of VMware ESXi hypervisor. With the help of the hypervisor, I plan to ...
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1answer
230 views

IP conflict on internal network

I have a netgate 8100 that rolls out my DHCP numbers and some of my workstations that have static and most are DHCP. I have one workstation that is reporting an IP conflict and can not find the ...
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1answer
3k views

I'm pinging a server and getting a response, but the server is OFF

I have a server (a simple XP box) on my home network at 192.168.11.2. I've been having trouble accessing it from my Mac, due to a change in 'location settings'. So I'm trying to work it out. I ...
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2answers
4k views

How to access internal valid IP through internet?

Suppose I have a router with this valid IP address (it's not real): 9.9.9.9 So this router is identified by this ID. The internet is available through this router. Another computer wants to access ...
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2answers
2k views

How to find my computer's IP Address? [duplicate]

I'm a total noob about TCP/IP, now reading some document (Sams Teach Yourself TCP/IP in 24 hours). However, I still don't get some concepts. First of all, when I type "what's my ip address" in Google,...
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0answers
221 views

IP based tunneling using putty

under linux i learnt to establish an ip-based tunnel using ssh, doing this: # background tunnel ip based on tun5 sudo ssh -f -N -w 5:5 root@remoteserver # setup remote: tun5 ssh root@remoteserver "...
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Reroute IP through another country [duplicate]

How can I route my IP through another country? For example, right now I am in France, and I would like an IP to access URL's through a US IP.
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1answer
147 views

Windows XP LAN Connectivity

I have 3 desktops all running Windows XP SP 3 connected to a ADSL Modem-Router. On 2 systems I have assigned static IP addresses and am not facing problems with Internet connection or LAN sharing. On ...
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13answers
111k views

What is the exact use of a MAC address?

I understand that IP addresses are hierarchical, so that routers throughout the internet know which direction to forward a packet. With MAC addresses, there is no hierarchy, and thus packet forwarding ...
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1answer
266 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 ab:cd:...
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Does the order of entries in the routing table matter?

Does the routing order matter: > route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 123.x.x.151 0.0.0.0 255.255.255.255 UH ...
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1answer
67 views

Emulate Network address in a LAN

My college has a network, their dhcp will allot us a xx.xx.67.xx ip (Wifi), i found that in their lab they use a different proxy that is restricted for our ip range(Squid) (xx.xx.1.xx is their ip ...
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6k views

Changed router ip accidently. Can't change it back

My router ip was 192.168.1.1; I changed it to 192.168.1.107 at the router web interface. Now I know that was bad idea. How could I change it back as it was? I can't access web interface now
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How to uniquely identify a computer in an online survey

I filled a survey today which states that it can only be done once a month. If I try to do it again, I am not allowed as expected. I am trying to find out how they know that it is from the same ...
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1answer
3k views

Blocking all sites/IP address but Google.se with iptables

Im trying to block all IPs but Google.se. It doesnt work (Site does not display) Here is what I wrote: #/bin/sh echo "Flushing IPTables..." sleep 1 iptables -F iptables -X iptables -t nat -F ...
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1answer
94 views

In LAN, all IP should be private IP or not?

are there any cases that in LAN, host are assigned public IP? if so, why in these cases, public IPs are used in LAN?
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6k views

Network Traffic per process/application windows

I know that there are plenty of applications to do this (like procexplorer) but is there anyway to access the winapi (what method/reference is used) to retrieve the network traffic (TCP, UDP, etc) per ...
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1answer
454 views

default gateway to set on devices connected to routerless auto-ip LAN?

I have a TCP/IP device connected to the ethernet port on my windows 7 laptop. The laptop has a static IP address but is set to use auto-IP devices on the LAN The device can be set to use a static IP ...
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1answer
2k views

Multiple Subnets Routed Through Separate Network Interfaces Assigned Static Public IP's Going Through a Single WAN Connection

Question moved and completely re-written here. I have a block of Static IP's from my ISP and I am looking to setup separate network interfaces inside DD-WRT that all go through the single WAN ...

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