Refers to the 4th revision of the Internet Protocol, where addresses are usually displayed in the form: 192.0.2.235

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9
votes
4answers
882 views

How to put two subnets next to each other?

I've been using this calculator http://www.subnet-calculator.com/cidr.php, and I'm trying to figure out how to put two different subnets next to each other. For example, I want to have a /27 subnet ...
3
votes
1answer
397 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 ...
3
votes
2answers
60k views

Install Internet Protocol Version 4 (TCP/IPv4) on Windows 7

I can not explain what has happened, just suddenly I lost my internet connection. On local area connection properties IPv4 is not installed, my ISP says that they only support IPv4. Then I must had it ...
3
votes
1answer
4k views

6to4 vs ISATAP vs Teredo Adapters

I understand that all three adapters mentioned in the title are related to transitioning IPv4 to IPv6. ISATAP: Transmits IPv6 packets between dual-stack nodes on top of an IPv4 network. Teredo: IPv6 ...
0
votes
1answer
3k views

IPV4 Lan 2 IPs remove 169.254.* from nic

When I ipconfig: Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : IPv4 Address. . . . . . . . . . . : 172.30.2.194 Subnet Mask . . . . . . . . . . . : 255.255.255.0 IPv4 ...
1
vote
5answers
19k views

How can I figure out what IPv6 to use if I want to set a static IP for my computer?

I recently installed Windows Server 2012 on my desktop. I changed my connection settings to hardcode my internal IP address as 192.168.0.99 (IPv4). Windows Server 2012 warned me that I should also set ...
1
vote
1answer
1k views

IP, Gateway and DNS changer [.bat Win7]

I have a batch file that I use on my WinXP SP3 (I found it on the net and it worked). SWiTCH TO CONNECTION 1 @ECHO OFF set varip=192.168.0.118 set varsm=255.255.255.0 set vargw=192.168.0.1 set ...
5
votes
1answer
280 views

Is there a way to test alternate IPv4 routes?

i am using Hurricane Electric's Tunnel Broker service to get IPv6 connectivity. TunnelBroker lets you have access to the IPv6 Internet by using a standard IPv6 tunneling protocol. You send IPv6 ...
0
votes
1answer
179 views

Connect to a ipv4 site with ipv6

Is there a way to connect to a ipv4 website using an ipv6 proxy? cause I have vps that only has ipv6 so I want to setup a proxy server using ipv6 only but want to connect to ipv4 websites
4
votes
1answer
329 views

How to block a program from using IPv4?

I have a program that can communicate over IPv4 (TCP and UDP) and over IPv6 (TCP and UDP). I want to block the program from being able to use IPv4. I tried the Windows Firewall: Except it blocks ...
1
vote
1answer
2k views

How do I access IPV6 from IPV4?

I have been searching for a long time ipv4 to ipv6 proxy program but i nothing found... Currently i have IPv4 address however i would like to try IPv6 address. Is there a simple solution for IPV6 ...
9
votes
4answers
2k views

4in6 tunneling (via OpenVPN?)

I have a local network with internet access. But unfortunately IPv4 internet connection speed is limited to 1mbps, which is realy sad. Fortunately I have a native IPv6, and there is no connection ...
2
votes
1answer
441 views

Prefer IPv6 over IPv4 in Windows Server 2003

I am running Windows server 2003 and my Firefox browser keeps using IPv4 instead of IPv6. Well at least http://ipv6-test.com/ says that my browser uses IPv4. How can I force it to prefer IPv6 over ...
3
votes
1answer
307 views

Can I prioritize IPv6 traffic over IPv4 traffic on Linux?

Is there a way I can give traffic over IPv6 a higher priority than traffic over IPv4? Purpose is 2-fold: Promote IPv6, and be able to connect even when my server is swamped by IPv4 users.
0
votes
1answer
69 views

ipv4 zeroconf dnssd ip adresses after reboot

If you have a network and some devices with valid ips configured by either ipv4 local link, apipa, dnssd or zeroconf if you do reboot one of them. Does the rebooted device get the same ip as before ...
8
votes
1answer
4k views

Is there any reason to subnet a home network?

For networks I understand we set a netmask on each computer to let it know what IPs it can talk to without going through the router - IPs on the same subnet can talk directly to each other and do not ...
1
vote
2answers
511 views

How to find the network address of a given subnet?

How do I find the x th subnet of X.X.X.X /XX (300 th subnet of 172.16.0.0 /29)?
1
vote
1answer
9k views

Windows 7 ipv4 autoconfiguration - cannot connect to internet

I get my internet connection from a guy (lets call him my service provider henceforth). He gives internet connections to many students here in my hostel. My PC gets a private IP through his DHCP ...
1
vote
1answer
135 views

IP Routes - Route Mapping

I've been reading up on static routes and such while studying for my next MS exam, and am wondering - in CMD, if you do a route print -4 you get a Active Route Output such like this: Destination ...
12
votes
2answers
4k views

What about IPv4 class E?

IPv4's class E network (240.0.0.0/4) contains 268 million addresses. Despite the advertisements for IPv6, claiming we have ran out of address space, this block ironically still claims to be "Reserved ...
16
votes
1answer
39k views

How to force Java to use IPv4 instead IPv6?

My Java browser plug-in is no longer working. When I open a page that has a Java element, Java cannot connect to the server. After investigation, I found that Java was trying to use IPv6, while my ...
1
vote
0answers
37 views

IPv4 Considerations for a Cloud-based future [closed]

I'm re-doing a small company's IP scheme / netdesign for their LAN. They are growing fast, with many branch offices opening soon. It's a mostly flat 192.168.1.x/24-ish out-of-the-box network. There ...
1
vote
1answer
719 views

strange characters in DNS Suffix

I have some strange characters in my DNS Suffix. I have removed these strings from registry and attempted to fix this in many other ways. Does anyone here have an idea of what I could do to fix this. ...
1
vote
0answers
764 views

IPv4 not enabled in Windows 7

I have a Netbook with Win 7 Starter edition. I am not able to get IPv4 enabled/installed in the Netbook and hence not able to network/connect to Internet. It says "Limited access" when I check ...
5
votes
1answer
1k views

IPv4, IPv6 and IPTables

I have just recently learned that even if I block all traffic to my webserver using iptables it is still vulnerable to external attacks via IPv6. In my understanding, this renders iptables-only ...
17
votes
9answers
139k views

Why do I get “General Failure” when pinging host name on a Win 7 node on the network?

This is a very peculiar problem with a station on our network. The client pc is running Windows 7 Pro. What makes this problem interesting is that this client is the only node on the network that ...
7
votes
4answers
2k views

Does disabling IPv6 decrease my surface area of attack and increase performance?

I have colleague that is on this whole kick of disabling IPv6 while leaving IPv4 on each new machine that comes in before deploying in our environment. He takes his personal anecdotal evidence and ...
0
votes
3answers
581 views

Since IPv6 has larger addresses than IPv4, how will that affect performance?

IPv4 are 32 bit addresses, while IPv6 are 128 bit. It's 4 times larger, sure on a small scale maybe not a big difference, but on a world wide scale will it make a difference? Are their any messures ...
9
votes
3answers
7k views

How do client applications know to use IPv4 or IPv6?

How do servers/computers/users/applications know to request a resource over the Internet with an IPv6 address vs. and IPv4 address?
-1
votes
1answer
279 views

I can not see ipv4 and http, I can just see ipv6 and SSDP [closed]

I have a real huge problem, when I am connected through the wireless of my university, I can just see adresses like this : 1823731 14856.287768 fe80::74b6:2d79:4343:41e1 ff02::c SSDP ...
2
votes
2answers
775 views

How does CIDR slow the exhaustion of IPv4?

In the Wikipedia article on CIDR, it says The Internet Engineering Task Force introduced CIDR in 1993 to replace the previous addressing architecture of classful network design in the ...
1
vote
1answer
517 views

What are the equivalent IPV6 versions of IPV4 special-use adresses?

I'm trying to make a private network with 5 computers bellow an external ADSL router with NAT, but internally I want to use IPV6. To do this I need to use private special-use IPV6 addresses, such as ...
1
vote
2answers
1k views

Can't ping Linux IPv6 address from Windows XP

I gave an IPv6 address to my SUSE Linux machine on a VirtualBox VM with ifconfig eth0 inet6 add ... I can't ping that address from Windows XP (vice versa) The address of the Linux machine is efbb::26 ...
1
vote
3answers
12k views

How can I make localhost resolve to 127.0.0.1 instead of ::1?

When I ping localhost the address resolves to the ipv6 loopback of ::1 My MySQL and Apache installations expects the ipv4 address of 127.0.0.1 How can I configure my WindowsXP to resolve localhost ...
0
votes
1answer
52 views

Obtaining Iptables info using a script

I have an iptables rule and I have to write a script that gets the numbers of packets and bytes target for that rule. I know that that command iptables -L -v -x shows that info, but I don't know how ...
2
votes
3answers
3k views

SSH tunnel in Ubuntu

How do I create a ssh tunnel in Ubuntu that is persistent? I have tried a lot of ways but I haven't gotten it to work.
2
votes
1answer
428 views

Windows IP conflict after setting Static IP

I am having troubles setting my static IP address. I double check all of my default settings and tried to make my IP static. Here is what I entered I have tried various different IP addres ...
1
vote
3answers
1k views

Should I use a static IP address? If so what kind?

Last night I managed to get my local PC running as a server using port 80 and my IP address. After restarting my machine it stopped working. I was told I need to make a static IP address. My ...
1
vote
1answer
160 views

Unexpected IPv4 address when pinging machine on home network

Set-up I have three computers on a home network. No domain, just using Windows "workgroup" functionality. I'm using Input Director from a desktop Win7 PC to control two laptops (one Win7, one WinXP) ...
3
votes
4answers
6k views

How do I properly access Google through IPV6?

I'm trying to access Google through IPv6. However, it seems to want to send me back to IPv4! I did a DNS lookup on IPv6.google.com at http://centralops.net/co/ and found their IP, then tried this... ...
2
votes
3answers
869 views

Why were the ipv4 private address ranges chosen to be what they are? [duplicate]

Possible Duplicate: Why are home networks prefixed with 192.168? What makes the numbers 192.168 or 10. or 172.16 so special that those addresses, as opposed to other ones, were chosen as ...
0
votes
1answer
105 views

Accessing Apache sites on Macintosh (Snow Leopard) using internal IP address of machine

I am trying to access web sites on my Mac. If I use http://10.0.1.3/index.html then I get a web page with the following error on it: Forbidden You don't have permission to access /index.html on ...
2
votes
1answer
484 views

Using router public IP to access another (located in WAN) router behind NAT

I have following setup: at home I have a router up and running with public ipv4 ip at my country house I have ipv4 cam and router which is behind NAT - no public ip (public ip is too expensive) both ...
0
votes
1answer
121 views

IPv4 address to Netmask mapping and Multiple default routes feasibility?

We have, Class Range NetMask Bits Bits hosts# ---------------------------------------------------------- A 0-127 255.0.0.0 8 24 16777216 (i.e. ...
0
votes
0answers
368 views

Windows 7 64bit, great signal strength IPv4 & IPv6 can't connect

For some reason I can't connect to the internet with my wireless card (internal) on my PC, I am connected just fine on my laptop. It says my signal strength is good but both my IPv4 and IPv6 can't ...
1
vote
0answers
403 views

When and why does Gateway Metric become equal to Interface Metric ? (Windows network Adapters)

netsh interface ip show address .... command reveals some information about the gateway and interface metrics of each type of adapter . However the gateway metric seems to alwyas change and sometimes ...
6
votes
1answer
5k views

IPv6 Tunnel via Own Linux (IPv6-connected) Server

Unfortunately, there's a lot of IPv6 tunnel brokers, and their documentation often clutters the search results for how to setup your own IPv6 tunnel. I have a Linux server with IPv6 connectivity. I ...
1
vote
1answer
238 views

Automatic ipv4 interface metrics algorithm?

Here is the link in reference http://support.microsoft.com/kb/299540 .Is there anything similar for windows 7 ?
1
vote
2answers
389 views

Should I get a gigabit router with or without ipv6 support? [closed]

I'm in the process of getting a gigabit router so i can transfer files faster to and from my Lacie Network Space. I found a gigabit Router. Its performance is really good, however it doesnt support ...
3
votes
2answers
2k views

Should I get a router with ipv6 support?

I'm in the process of getting a new gigabit router so I can transfer files faster to and from my Lacie Network Space. I found Asus RT-N56U Wireless N Dual Band Gigabit Router. Its performance is ...