Ubuntu Networking :: Linksys DHCP Active IP Table?
Apr 3, 2011
I recently acquired a Linksys BEFW11S4 v.4 router which I am using for my wired home network (wireless is turned off). Yesterday I was checking my router settings and I noticed under "Status>DHCP Clients Table>DHCP Active IP table" there was a weird looking Client name. I deleted it and when I checked back this morning it was there again. I checked my devices (PC, router, Xbox) and none have this MAC. How can someone connect to my wired network when wireless is disabled and I have changed my SSID and created a very strong password? Wouldn't someone need to know my SSID/ password? I do not have a WEP passphrase currently, but I felt it was not necessary since my network is wired.
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May 23, 2011
when I change the hostname on my Ubuntu server, the DHCP clients table in my router is dropped.I'm running 32-bit Ubuntu Server 10.10. My router is a Linksys WRT54GL with firmware version 4.30.15. I'm changing the hostname by modifying /etc/hosts and /etc/hostname. I've also tried changing the hostname using the Linux hostname command in a terminal, but this does not seem to behave correctly according to the manpages (it does not actually change the hostname, or update either of the aforementioned files).
I've also tried using a different router - a Linksys BEFSR41 - but the DHCP table is still dropped when I change the hostname on my server (although this router is not all that different from my other one).
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Oct 22, 2010
Back in April I set up a Ubuntu DHCP server and a multiple VLAN network [URL] to migrate our various servers, workstations, etc off the 192.168.1.1 /24 network that everything was on because we where running out of address space. I built out the new network and everything worked great except our AD server would never get an IP address from the DHCP server (static reservation) and even if I set the IP statically on the AD server it couldn't ping the gateway and noone could log in. After several attempts to resolve this, including bringing in outside help, we where never able to figure out what the problem was.
Now 6 months later I have time to revisit the issue without effecting the live network. I used Acronis and imaged the AD server last Friday, cloned it on to another box with the same hardware, and put it up on the new network that's been sitting unused for the last 6 months. Today when I statically set the IP on the AD server (which is what I want) it connects and I can ping it's gateway 192.168.1.1 and all the way across vlans to a test sales agent workstation at 192.168.8.xxx on vlan 800 but only if I statically assign the agents station an IP address. When I try to get an IP address via DHCP it fails as destination unreachable. Nothing has changed in the last 6 months on the DHCP server but now it for some reason can't ping its default gateway 192.168.1.1. All of the config files are the same as they where left from the post linked above aside from the vlan id's used where changed from 1's to 100's (i.e. vlan 3 is now vlan 300) /etc/network/interfaces
Code:
auto lo
iface lo inet loopback
auto vlan100
iface vlan100 inet static
[code]....
why it can't reach the gateway, when I do a tcpdump I can see the DHCP requests come in on eth0 but the server never responds and I'm pretty sure its because it isn't "seeing" them since it thinks there isn't a network connection but I don't know how to trouble shoot to find out where the problem lies.
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Jul 1, 2010
Back in April I set up a Ubuntu DHCP server and a multiple VLAN network [URL] to migrate our various servers, workstations, etc off the 192.168.1.1 /24 network that everything was on because we where running out of address space. I built out the new network and everything worked great except our AD server would never get an IP address from the DHCP server (static reservation) and even if I set the IP statically on the AD server it couldn't ping the gateway and noone could log in. After several attempts to resolve this, including bringing in outside help, we where never able to figure out what the problem was.
Now 6 months later I have time to revisit the issue without effecting the live network. I used Acronis and imaged the AD server last Friday, cloned it on to another box with the same hardware, and put it up on the new network that's been sitting unused for the last 6 months. Today when I statically set the IP on the AD server (which is what I want) it connects and I can ping it's gateway 192.168.1.1 and all the way across vlans to a test sales agent workstation at 192.168.8.xxx on vlan 800 but only if I statically assign the agents station an IP address.
When I try to get an IP address via DHCP it fails as destination unreachable. Nothing has changed in the last 6 months on the DHCP server but now it for some reason can't ping its default gateway 192.168.1.1. All of the config files are the same as they where left from the post linked above aside from the vlan id's used where changed from 1's to 100's (i.e. vlan 3 is now vlan 300) /etc/network/interfaces
Code:
auto lo
iface lo inet loopback
auto vlan100
[code]....
why it can't reach the gateway, when I do a tcpdump I can see the DHCP requests come in on eth0 but the server never responds and I'm pretty sure its because it isn't "seeing" them since it thinks there isn't a network connection but I don't know how to trouble shoot to find out where the problem lies.
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Mar 8, 2010
Currently I have my eth0 interface getting a DHCP address but at times the DHCP server will not be reachable. Sooo what I would like my server to do is if it cannot find a DHCP server assign a static address to eth0. Then start the DHCP service so it can then dish out some addresses.How can I do this? Surely it is possible
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Mar 25, 2010
I am puzzled with trying to configure a linux (openSUSE) client to dhcp to eBox DHCP server. I am using dhclient to lease an IP address with dhclient eth0 -s 10.45.48.108 and get a response
openSUSE11232CL1 dhclient: DHCPDISCOVER on eth0 to 10.45.48.108 port 67 interval 4
openSUSE11232CL1 dhclient: DHCPOFFER from 10.45.48.108
openSUSE11232CL1 dhclient: DHCPREQUEST on eth0 to 10.45.48.108 port 67
openSUSE11232CL1 dhclient: send_packet: Network is unreachable
openSUSE11232CL1 dhclient: send_packet: please consult README file regarding broadcast address.
The server reports eBox141 dhcpd: DHCPDISCOVER from 00:0c:29:3e:57:a3 (openSUSE11232CL1.domain.net) via eth0
eBox141 dhcpd: DHCPOFFER on 10.45.200.2 to 00:0c:29:3e:57:a3 (openSUSE11232CL1.domain.net) via eth0
I interpret this as the server receives the request and the client accepting it but the lease does not last long and the connection breaks. what this could be and why the connection breaks? Or my undestanding is totally wrong on how it works and should work? And BTW, where is that README file that's referenced in the message I receive on the client?
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Aug 19, 2011
We purchased a virtual server from GoDaddy (1 month trial) to set up as a proxy for our networks (24 of them). I am having 2 separate issues. The first is I can't configure/install NAT and support is telling me the only way I can is to purchase a dedicated server. Here's the error:
iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 3128 iptables v1.3.5: can't initialize iptables table `nat': Table does not exist (do you need to insmod?) Perhaps iptables or your kernel needs to be upgraded. Here's the fix: [URL] So, what I am hoping to do is configure this by just opening port 3128 directly, and only allowing access from our networks. As a test I did this and allowed only from our office and it did not work. However I can't connect, so I am wondering what I am doing wrong? Here's my squid configuration:
[Code]....
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Oct 23, 2010
i need to prepare a presentation for that i have to copy a table from [URL] to my power point slide. but when i am copying it i am just getting a table with single column. is there a method to import the contents from web page table to my presentation table?
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Mar 11, 2011
how to setup an Active/Active Load Balanced and High Available (If one of the nodes is down the system still runs) MySQL cluster. I have found quite a few howto's but I have some things unclear in my mind. I found a few solutions like this one: [URL] or this: [URK] Those are using two or four MySQL nodes, two Load Balancers to avoid a single point of failure but only one MySQL cluster management server. What happens if the MySQL cluster management fails?
I have also found a "MySQL Master-Master Circular Replication" technique but from what I read, with this option there is a chance that conflicts will arise if node A and node B both insert an auto-incrementing key on the same table.
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Dec 1, 2010
I'm trying to connect to a friend's Linksys WAG160N router using Ubuntu 10.10, but it's just refusing to connect. I can connect to other wireless networks fine - it seems to just be this router. The wireless indicator applet thing shows that I'm trying to connect, but the password box always just pops up again and again. I'm certain I've got the password correct and am able to connect under OSX on the same computer. Connecting to it via ethernet also works fine.
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May 22, 2010
Ubuntu 10.04 not seeing my WUSB300N. What is the Easiest way to get this working?
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Feb 20, 2010
I have loaded ubuntu 9.10, and am not getting internet from my router using a linksys EG1032. I have found articles stating that i should use the sk (URL...) or nge URL...)drivers. According to the instructions i found, they require that i make changes to my kernel config. I do not know how to do that, or if doing so is wise.If someone would help me figure out how to connect this NIC card.
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Mar 25, 2010
My first Ubuntu/Mythbuntu install. Installed OS, plugged in linksys wireless G adapter. It finds the network but cannot connect. Discovered wireless priviledges while setting up admin/user accounts. Should be ready to go. or not, I'm thinking it needs a driver but
1) in linux? certainly not in Fedora.
2) If it can see the network it doesn't need a driver,
My settings are wrong or I'm missing something. SSID is set in settings. Do I need mac address and BSSID?
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May 14, 2010
I just installed Ubuntu 10.04 on my formerly XP system, and I'm trying to get my wireless network working. I have a Linksys WUSB11 v2.6 wireless adapter connected by USB to the system.
The system networking icon reports "No wired networks".
I'm not sure whether or not the system sees the USB ports... If so, it apparently doesn't recognize the adapter.
I saw a few posts that indicated that this adapter didn't work on 10.04 but it had worked on 9.04.
I'm looking for any info to get this working, including any or all of the following:
* How to determine if the system sees the USB ports (or is it "obvious" that it does)
* Should the wireless adapter work just by plugging it in?
* How to troubleshoot the networking adapter to get it working
* (If downgrading to 9.04 is likely to solve the problem) how to downgrade to 9.04 from 10.04...
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Jun 8, 2010
The Linksys USB Wifi Adapter (WUSB11 v2. does not work with UBUNTU.
I am using UBUNTU DESKTOP 64-bit (x86_64) 10.04, but I think it is not working in the 32-bit version as well.
I really love to get my Ubuntu work with my 64-bit hardware....
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Jul 13, 2010
Previously I had my desktop hooked up to a nearby router via an ethernet cord with my parents' computer having a wireless usb adapter to connect (This thing: [uRL]). We just moved and our setup has reversed (router is near their computer, I am using the usb adapter). I just installed the latest Ubuntu and now I can't get the usb adapter to work. I'm very new to Linux and I have no idea what to do. I think this is the same usb adapter.
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Jul 16, 2010
I just bought Linksys WAG160N ADSL 2+ Router and modem device. It came with an setup installation CD which is not running on ubuntu. In the manual it is written that it will run only under windows and Mac OS. I have only Ubuntu on my laptop.
I need to run the setup CD to go ahead. I searched more than three hours to find out how to run this CD so that I can complete the setup of my new modem-router but did not find any solution.
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Sep 2, 2010
My old ubuntu laptop beeps 3 time on startup and then freezes. This forced me to install 10.04 on a new laptop. Now I can't get the linksys wpc54gs ver 2 to get connect. I can see the router with a padlock by it. I pretty sure I have the correct password in the right spot. I can access the internet with the wire connection. I'm sure it something simple I forgot from before when the card was working in the old laptop.
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Sep 3, 2010
I think lightning may have killed it. It was working fine. Now I cant get it recognized no matter what I do. It also quit working in Win XP where I never had a problem with it because it had its own connection software.
dmesg yields this-
RTUSB disconnect successfully
[ 312.876034] usb 2-1: new full speed USB device using uhci_hcd and address 7
[ 312.996021] usb 2-1: device descriptor read/64, error -71
[ 313.220031] usb 2-1: device descriptor read/64, error -71
[ 313.436038] usb 2-1: new full speed USB device using uhci_hcd and address 8
[ 313.556025] usb 2-1: device descriptor read/64, error -71
[ 313.780031] usb 2-1: device descriptor read/64, error -71
[ 313.996032] usb 2-1: new full speed USB device using uhci_hcd and address 9
[ 314.404022] usb 2-1: device not accepting address 9, error -71
[ 314.516021] usb 2-1: new full speed USB device using uhci_hcd and address 10
[ 314.924029] usb 2-1: device not accepting address 10, error -71
[ 314.924046] hub 2-0:1.0: unable to enumerate USB device on port 1
[ 343.664017] pan0: no IPv6 routers present
[ 809.024049] usb 1-1: new high speed USB device using ehci_hcd and address 10
[ 809.182271] usb 1-1: configuration #1 chosen from 1 choice
[ 809.182837]
[ 809.182839]
[ 809.182840] === pAd = ffffc20020b41000, size = 598568 ===
[ 809.182841]
[ 809.182845] <-- RTMPAllocAdapterBlock, Status=0
guest3@guest3-desktop:~$
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Nov 11, 2010
I have a linksys wireless-b wmp11 network card. Can anyone tell me how to get this up and running? Maverick is up to date as of yesterday and I have the cd that came with the card. I have no way to access the internet on the machine. I am typing this from my laptop.
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Feb 18, 2011
Here is the situation: I am currently running Ubuntu 10.10 64 bit. I'm trying to get my Linksys AE1000 to run correctly. I have followed many tutorials but most notably was:[URL].. lsmod shows that rt3572sta is loaded. network manager in gnome is able to find my router. my problem occurs when it tries to connect to the router using wpa2 security. It continually asks for the wireless password then will freeze the system after a number of attempts. After digging in for a bit, I was able to dig out a dmesg trapping the error:
BUG: unable to handle kernel paging request at ffffcfb0138af1ec
IP: [<ffffffffa021c7e8>] Cntl0idRTBssidProc+0x78/0x570 [rt3572sta]
PGD 0
Oops: 0000 [#1] SMP
last sysfs file: /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map
CPU 2
I really don't see the need to continue on with those error messages lsmod still shows rt3572sta after the failure. In case anyone wants to see the changes I have made to the files before the make, I have included them. but changed the extension to "txt" to accommodate the up-loader and my rt_linux is too big to fit here, just not that it was 2 lines that were changed to work with the kernel. If anyone wants to know what I mean by the system freezes, I do mean just that. The mouse will continue to work, but I am then unable to open any programs, unable to reboot the computer. it requires a hard reset.
I have uninstalled the drivers, installed them, make them, make install them, make clean, start from scratch a few times, and am getting no give here.
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Feb 25, 2011
I am dual booting XP and Ubuntu 10.10 64bit on a Dell Latitude E6410 and I have a Linksys WRT120N router connected to my Modem.
So the weird thing is, under XP I can use the internet while connected to my router. Under Ubuntu I can't use the internet while connected to my router. But I can use the internet in Ubuntu if I connect to my neighbor's router called "linksys". So something happens when I connect to my router that makes Ubuntu not able to access the internet. But if I'm connected to my Neighbors router or if I use XP while connected to my router I can use the internet.
I have been using Ubuntu for about a year, so I'm getting better but still a noob. I've tried to figure out what's going on by looking at other forums and posts and trying to see if anyone has solved this. So far I've had no luck. This is also the first of many problem I have encountered that I have been unable to solve using online posts, and is the first problem that I have had to resorted to creating a post to try and fix.
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Apr 1, 2011
I connect to multiple wireless system each day but when I encounter a Linksys-n router the computer will recognize it and connect but does not go online.
Does this give any clue for why it will not connect?
Code:
802.11a/b/g
System wireless is: Toshiba Satellite M115-S3094 with Intel PRO/Wireless 3945ABG (802.11a/b/g), Ubuntu 10.04
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Jan 29, 2010
I have a linksys wusb100 and need to set it up on ubuntu 8.04 and 9.10.
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Apr 9, 2009
I am net to this whole Linux thing. I cant seem to connect to my Linksys router. Not sure if I have to call Linksys or what.Mine is a WRT54GS
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May 3, 2010
Kmail 1.13.2 Problem on startup, error is from nepomuk, data storage. "cannot find Redland backend, nepomuk is disabled until fixed. Also see the following error from the akonadi console:
100503 10:00:15 [Note] Plugin 'ndbcluster' is disabled.
100503 10:00:15 InnoDB: Started; log sequence number 0 31413862
100503 10:00:15 [Warning] Can't open and lock time zone table: Table
'mysql.time_zone_leap_second' doesn't exist trying to live without
[code]....
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Jan 3, 2010
i cant connect to my wireless network... im using karmic. Ive searched and found quite a lot of threads but arent sure where to start. I have a Linksys wusb600n, and are trying to connect to my network. It detects the network fine but doesnt connect.
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Mar 21, 2010
I couldn't find any details on how to do this on Ubuntu, so I figured I'd share for anybody who needs to do that. I got this adapter from a garage sale, it's meant for use with vonage service, it has a web interface with disabled voice tab, and a hidden voice admin page. My goal was to access (unlock) those pages, so that I can use it with one of the free sip providers.
The main thread on how to do this is over at bargainshare forums, the only thing I'm adding here is how to do it on Ubuntu as opposed to windows:[URL]... I will write the simplist path using typical defaults, if your setup deviates or if one of the steps below fails, please refer to the original guide at this link to sort things out. Important note: the pc used in the procedure shouldn't be connected to the internet. Internet access is only needed to get files, programs and instructions, either before using the pc for this procedure, or through a separate pc.
Adapter setup:Do NOT connect the adapter to the internet especially if it has been out of service for a while. Connect an ethernet cable to one of the lan ports on the adapter and in a browser go to 192.168.15.1, this is the default lan gateway address. When prompted to log in use admin/admin again that's the default First thing needed is to flash a special unlocking firmware that allows the adapter to acquire clear text configuration file (as opposed to the encrypted vonage one). After downloading the unlocking firmware from guide above, go to the Administration page then the tab for flashing firmware. Select the firmware file you just saved and let it flash, you'll be prompted to log in, I used user/7756112 , more can be found in the guide, if successful, you'll get a message to that effect. Now firmware version should be 1.7.02 and voice 2.09 LId Next we need to get the adapter to get our configuration file, create one as mentioned in the guide above, meister_sd method, put the file in a folder of your choice, we'll need to use that as our tftp root folder later Now we configure the adapter to talk to the pc, under the setup page of the adapter set "Internet Connection Type" to Static IP and assign the adapter a static IP address, e.g. 192.168.1.88, then set the default gateway and DNS1 to a static IP address that you'll later assign to your PC, make sure it's on the same subnet as the IP address you assigned to the adapter, e.g. 192.168.1.99, save the changes Switch the ethernet cable to the wan port of the adapter, so it's connected directly to the pc, no crossover cable needed in my experience, turn off the adapter until we setup the pc
PC setup:First we need dnsmasq package from synaptic. This package can provide dns, dhcp, read only tftp daemons, outstanding piece of software. during the installation, it will automatically start with it's default settings. we'll shut it down so that we can start it with different command line options:
Code:
sudo /etc/init.d/dnsmasq stop Now we configure the pc to act as a gateway and dns server temporarily, System->Preferences->Network connections , then edit the ethernet interface we're using to connect to the adapter, under IPv4 settings, set the method to manual, then add an address entry with the IP address used on the adapter for dns and gateway, ie 192.168.1.99 and gateway and dns as 127.0.0.1 Now we need to start the dns and tftp daemons:
[URL]...
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Mar 29, 2010
I really need to get a linksys wpc54g version 4 pcmcia card to work....i have never really had a lot of problems with wireless and thit is a friends laptop that he wanted ubuntu on......if i cant get it to work he will go back to windows and i would not like that to happen lol....here is the output of dmesg and ifconfig lspci and lspcmcia..
Code:
thomas@thomas-laptop:~$ dmesg
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 2.6.31-20-generic (buildd@palmer) (gcc version 4.4.1
[Code]....
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Apr 1, 2010
I've tried it using the Ubuntu 9.10 live CD (both 32-bit and 64-bit versions) and while the adapter can see wireless networks, it can't connect to them. It asks me for my WPA2 key, but after trying to connect for about 30 seconds it asks me for it again. I've read other threads about this issue but they were kind of confusing.
I just need to know whether the adapter will work and if so, how to get it to connect. I'm so sick of Windows and I'd love to switch to Linux, but I won't be able to if I can't get my adapter to work.
Edit: I just noticed the sticky about posting wireless tickets. I'm sorry, I don't have time to post it right now, but I will post all of that information when I get back.
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