How should Kerberos Authentication be setup with IPv6?   Of you're using NAT for IPv6 where there is a single public IPv6 address and it translates to the machines inside in the ULA range?
122029
How should Kerberos authentication be set up with IPv6?     What implications are there when client devices each use a public, globally routeable IPv6 IP address?  What changes when setup this way instead of using a NAT as was the norm with IPv4?
55883
I'm soon going to be setting up a wireless network for me and some buddies and (hopefully) making it secure. I have some questions and concerns regarding this and figured someone here could give me a hand and steer me in the right direction.   I have a WRT55AG (version 2) loaded with the factory firmware. I've heard that it's possible to load your own firmware onto routers like these. Is it worth it? What can be achieved with it? I was wondering what kind of security I should use on my wireless. Ideally I would want all devices to be 'accepted', but I'm not sure how to accomplish this. I'm guessing it has something to do with MAC addresses, but I don't know the first thing about them. It would be great that ALONG WITH encryption (I'm told WPA2 is the best), every device would need to be added to a list of some sort before even being able to access the AP. Another feature I was thinking of would be completely hiding my wireless from showing up on other people's computer. Is this possible (like an SSID broadcast thing). Is it worth the trouble? One more option I was looking to implement would be bandwidth calculators. Ideally something in the router to measure the amount of bandwidth being used and how much has been used for that month (this has to do with bills and limits, obviously). Is it possible to throttle down speed when a certain limit is reached?   These are alot of points but I was hoping someone who has more knowledge than me in this subject could give me a hand and a few pointers. Hopefully all this is possible and I'm not dreaming :)
80945
I'm reposting  I asked on the  SE, bacause I have been redirected to Super User.  I have successfully set up two Linksys routers running DD-WRTv24 to do WDS. They have the same SSID, but different static local IP addresses. There is no security: it's just for testing; no Internet connection.   When I open my notebook, I see the SSID shared by the routers in the list of WiFi access points, and I can connect to it. Once connected, I can ping both routers' local IP addresses, so I know that the WDS is working. But I can't find a way to find out which of them I have actually connected to.  I wouldn't like to have different SSIDs, because I plan to have the access points hand-off users to one another, and I want it to be transparent for the users. I configured one AP to distribute DHCP IP addresses in one range, and the other in another range, so I can discover which AP I connected to at first, but I want a way to discover which AP I'm connected to now, so that I can find out whether the hand-off actually occurred.
4759
Let's say there are two users on the LAN, A and B. How do I restrict user A from internet access using iptables rules and saving the rules so that after reboot, they are still effective. Suppose also that I want to grant that user access at some point; how do I enable it again? I am using Ubuntu Linux 10.04. It would be nice if anybody show me how to do it from the command line, as I often login to the machine using a local ssh login.
7625
You can reach this IP address  (if my computer is online). I want to assign a domain to it so I wonder how is that possible when I have no DNS? I do own my domain which is ".com". My IP is static.  Thanks
90086
I want to know how to make my ubuntu server ip public. I'm not asking for a domain, if people would be able to access my website by ip, it would be great! (just for now) Does someone have an idea how to do this?
85922
NAT is a wonderful concept used in ipv4. It is the major reason for the existence on internet, in my concerns. There are no networks in the world that doesn't work without employing NAT.  All I seek to know is that, would NAT be required if after ipv6 is implemented, would NAT be eliminated or be used in a different way(Transformed or Upgraded into a new version with some added abilities to tackle any situations or problems that the network specialists or researchers foresee).
98476
I have bought an Alfa AWUS036NH and I think I have set it up properly but when I type ifconfig while running Kali Linux, there is no device showing an IPv4 address.   Output:  eth0: flags=4163&lt;UP,BROADCAST,RUNNING,MULTICAST&gt;  mtu 1500         inet 10.0.2.15  netmask 255.255.255.0  broadcast 10.0.2.255         inet6 fe80::a00:27ff:fef0:7ead  prefixlen 64  scopeid 0x20&lt;link&gt;         ether 08:00:27:f0:7e:ad  txqueuelen 1000  (Ethernet)         RX packets 2057987  bytes 1965468395 (1.8 GiB)         RX errors 0  dropped 0  overruns 0  frame 0         TX packets 743272  bytes 114166643 (108.8 MiB)         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0  lo: flags=73&lt;UP,LOOPBACK,RUNNING&gt;  mtu 65536         inet 127.0.0.1  netmask 255.0.0.0         inet6 ::1  prefixlen 128  scopeid 0x10&lt;host&gt;         loop  txqueuelen 1000  (Local Loopback)         RX packets 1198257  bytes 1736573576 (1.6 GiB)         RX errors 0  dropped 0  overruns 0  frame 0         TX packets 1198257  bytes 1736573576 (1.6 GiB)         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0  wlan0mon: flags=4163&lt;UP,BROADCAST,RUNNING,MULTICAST&gt;  mtu 1500         unspec 00-11-22-33-44-55-30-3A-00-00-00-00-00-00-00-00  txqueuelen 1000  (UNSPEC)         RX packets 0  bytes 0 (0.0 B)         RX errors 0  dropped 0  overruns 0  frame 0         TX packets 0  bytes 0 (0.0 B)         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
105989
I'm sure the passphrase is correct 100% but Wifi keeps asking for authentication and never connects. What can I do? I've tried removing the networks, resetting the router, changing the password, rebooting Ubuntu, disabling IPv6.  Also, it worked until earlier today and then stopped. All my other devices log in fine.
69542
I know that a dedicated IP is needed for setting up SSL. What happens if we add SSL for  domains sharing an IP ? (Namevirtualhost)
87300
Why did the  (IETF) choose 192.168/16 to be a private IP address classand not something else?  Why specifically 192.168/16 and 10/8 and 172.16/12 and not 145.243/16 for example?  Is there a reason those IP addresses were chosen to be the standard for private IP addresses over all the other possibilities?
19916
How do these anonymous VPNs work? They say you can browse the web using a different IP address than your own. How does this work?  I understand the Virtual Private Network model, I am just confused on how I browse the web with a different IP?
76181
My DSL/WiFi router provided by my ISP has an internal IP address of 10.0.0.138, the addresses provided by DHCP are in the format of 10.0.0.xxx.  Now, I want to start using static IP addresses on my local network, and I don't know what to provide for the subnet mask.  What is a subnet mask?  Should I be using 255.255.255.0 or 255.0.0.0 as my subnet mask? What is the difference?
43587
This is a  about Redundant DHCP Servers.   Is it possible to have more than one DHCP server on the same LAN? What are the implications of doing this?    What happens if there is more than one DHCP server available? How do my clients know which one to use?  How can I have DHCP servers supplying addresses to more than one subnet\network segment? How can I configure multiple DHCP servers to supply addresses for the same subnet.
83150
Over the last 3-4 weeks I have been trying to find a rogue DHCP server on my network but have been stumped! It is offering IP Addresses that do not work with my network, so any device that needs a Dynamic Address is getting one from the Rogue DHCP and then that device stops working. I need help to find and destroy this thing! I think it might be a Trojan of some sort.  My Main Router is the only valid DHCP Server and is 192.168.0.1 which offers a range of 192.160.0.150-199, and I have this configured in my AD as Authorized. This ROGUE DHCP claims to be coming from 192.168.0.20 and offering an IP Address in the range of 10.255.255.* which is messing up EVERYTHING on my network unless I assign a static IP Address to it. 192.168.0.20 does not exist on my network.  My network is a single AD Server on Windows 2008R2, 3 other physical servers (1-2008R2 and 2 2012R2) about 4 Hypervisor VM's, 3 laptops and a Windows 7 box.  I can't ping the rogue 192.160.0.20 IP, and I can't see it in the ARP -A output, so I can't get its MAC address. I'm hoping that someone reading this post has come across this before.
90235
I just installed Ubuntu 14.04 Server and cannot get wifi configured correctly to work with WPA2 personal and could use some help.    There was a simple wizard during install where I selected my SSID from a list and entered my passphrase and that worked great.  Now that the install is done I am having trouble configuring wifi.  My Access Point is setup to WPA2 Personal TKIP or AES. Any advice would be greatly appreciated.  I have been messing around with WPA supplicant ant my /etc/network/interfaces file with no luck.  Thanks
42125
Even though I have seen and read quite a few similar Q's I was still unable to understand what is required for me to be able to do this.  I have an internal network. One of the machines is a web server. The router is configured for NAT redirecting a specific port to to that machine.  A public domain name is configured using dynamic DNS to point to my external address.  So incoming communication hits the router from its WAN interface and gets pointed to the internal server on the right port.  But if I try to use my public domain name from another machine within my network if fails to be redirected to the server.    In a way I would like that the same NAT rules would apply not only to incoming traffic but to outgoing (sort-of) traffic and have it sent back to the right server.  Assuming this helps, my router (D-Link DSL-2760U) does support static routing, but I am not sure how to configure it. It has the following parameters:   IP Version DstIP/PrefixLength Gateway Interface Metric