Debian Configuration :: New Router, Now "no DHCPOFFERS Received"?
Oct 22, 2010
I'm getting some odd behavior from a new router (netgear wg614 i believe). It appears that it won't assign an IP address to any machine running linux, but it WILL assign an IP address just fine to windows machines. my laptop is running debian lenny, but it isn't just my laptop - other linux (or linux based) machines can't get an IP address from it, either (including my wii). yet my old windows desktop gets an IP address just fine, as do my friend's windows laptops. i did not have this problem with my old router. nor do i have this problem when i bring my laptop other places. i have this problem ONLY with this new router.
the workaround is to assign a static IP address to my laptop and my wii, which is fine, but... i still want to get to the bottom of it. my laptop is definitely associated with the router (iwconfig output confirms this), so it's not a problem with the card or the driver (right?). i can log into the router administration from my laptop. the router just won't give it an IP address. how can this be? considering:-the only thing that has changed is the router-the problem occurs with all non-windows machines-my laptop and wii both worked fine with my old router (and others), and the settings have not changed.so, is there something fundamentally different about how linux and windows request an IP address from a DHCP server? My knowledge of both linux and DHCP are "medium", and they don't overlap enough for me to figure this out, i guess.
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Jan 3, 2010
I've managed to (I think) get my network card talking, but stuck at the DHCP. Network is wired, /interfaces looks like this:
[Code]....
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Feb 10, 2010
how to trigger a script when an email is received to update my mySQL database. I do not want to physically send the message to the script, I just want the script to execute and to under execute under a specific mail account.
I thought of setting up a cron job at first, but decided going down that approach would be a huge waste of resources. What method would you recommend?
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Jun 19, 2015
I cannot see my debian linux machine in my virgin media router>>attached devices. I can see everything else including my raspberry pi.
The box is headless but I connected up to tv temporary and did ifconfig and got the ip address. I can ssh to it and connect to minecraft server I have running on it but I would like to know why I cannot see it in the router.
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Apr 19, 2011
I've just bought a Linksys WRT610N router and I ran through various problems during the configuration, that brought some questions.Here is what I did to configure it (following the short manual that I got with the router)1. plugged the router in my modem and in my computer via ethernet cables2. entered its IP address (given on the manual) on my browser and logged in with the factory login3. changed the login passwordAfter this the problems that I have encountered are that:I set up the administration of the router to be disabled via wireless and enabled locally via https, but when saving those settings I either lost the connection (the browser telling me the server was not accessible) or asked confirm a security certificate after being (logically) redirected to the https version of the administration pageafter trying to loggin again, I wasn't able to login via https but only via http even if after logging those parameters were still as I set them (wireless administrative login disabled and local administrative login enabled only via https)
via https when getting something else than "the server is not responding or could be too busy", I was prompted the untrusted connection site, saying that"192.168.1.1 uses an invalid security certificate.The certificate is not trusted because it is self-signed.The certificate is only valid for Linksys.The certificate expired on 01/01/71 01:21. The current time is 19/04/11 22:56.(Error code:sec_error_expired_issuer_certificate)"I noticed that after loosing the connection and not being able to reach the router either with http or https, the only way I was then able to reconnect to it was to go into (I am using firefox 4 on squeeze) edit > preferences > advanced > encryption > view certificates > servers and delete the linksys certificate
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Sep 29, 2015
So I have a router that I've gotten from my ISP, which seems to run a hardened, custom version of OpenWRT. By that I mean it's read-only and has a lot of files mostly in RAM. So putting custom firmware on it is not an option for me right now, as it's by only router. Actually, it's not just a router, it's an Actiontek modem/router combo.
So anyway, lets say I have a machine on my LAN and I want to basically SSH into a box by hostname. Now the thing is, I prefer using OpenDNS (previously OpenNIC) as my DNS, and so I don't use my router as my nameserver, though I could do that.
So how do I connect to my machine by hostname? I would prefer a solution that does not use Avahi/Zeroconf or editing the hosts file. People have said setting up a local DNS server might be okay, but I'd have to do that for every machine I'd want added to my network. Kind of almost as bad as editing a static hosts file. I use really want to use DHCP over static IP assigning, and the one on my router is not as advanced, so I can't use my hosts file. And also,
So is Zeroconf the only solution? I'm not sure how to set up Zeroconf. Do you just install Avahi?
I want a simple, almost Arch-linux solution, lean and clean, using only the most minimal software. I don't care how much configuring I'd have to do, as long as it's going to stay reliable as well.
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May 25, 2011
I have just setup a debian box, and I want to be able to login to the machine remotely.Currently I have the following setup:Cable Modem -> Netgear Router (DHCP to outside world) -> Debian Box (DHCP for internal network)As I under stand it I have to set my Debian Box to use a static IP, but from there I di not know where to go.Also since my cable modem IP is dynamic, is there some way to have that the debian box get the IP address for the outside world, and e-mail it to my gmail account when it changes, or least every X hours?
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Dec 13, 2015
I am running : Linux ics385 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1+deb8u6 (2015-11-09) x86_64 GNU/Linux
Here's the situation
1. I'm trying to configure a WLAN using a D-Link DLR655 wifi router that is connected to eth1.
2. eth0 is connected to the ISP's DHCP router and has the IP 192.168.0.24
3. I've bridged eth0 to eth1 such that eth1 has the static IP 192.168.8.1
4. I've manually configured the router and it uses the 192.168.8.1 as the WAN address with its subnet on the 192.168.10.* address space.
5. I can connect a laptop to the D-Link using wifi and ping 192.168.8.1 but I can't ssh to it or to anything beyond it from the laptop.
6. If I'm on the server (192.168.0.24) I can ssh into either 192.168.0.24 or 192.168.8.1 but not if I'm on the laptop. I conclude from this that ssh is not the problem but the laptop says ssh: connect to 192.168.8.1 port 22: connection refused.
So, am I conceptually confused or is it that I have to open ssh up to the other sub-net address spaces or something like that?
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Feb 3, 2010
The router should handle everything automatically and transparently. All you need to do is make sure that the wireless Ethernet adapters in the laptops can "talk" to the wireless router.
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Jun 10, 2011
I'm building a Debian based router, I want to add to this router a mail service function. I don't want mail to be sent outside of the network, what I want is the ability for services to send mail to the Debian server and for me to then pick them up from this server via pop3 into my normal mail application. Given I'm not looking for mail to be sent outside of the network and its strictly for services to log notifications via. What of the various mail applications should I setup? i.e. just looking for SMTP + POP3 internally.
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Mar 2, 2010
I am unable to get my intel pro/wireless 3945abg connected to my router. The firmware has been installed and at first was even able to connect, but now the access point doesn't even show up in network manager. I am currently able to connect using a USB wireless adapter, but for certain reasons, would prefer to use the former. I've looked over this page with no results.
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Jul 27, 2010
I'm trying to TFTP router configurations to a server in the same local network without having to first make files in the server's TFTP directory . The transfer of a config file from router to server works perfectly if I make a file with touch and then chmod the file with 777. I found information that says to use the -c or --create option in the TFTP configuration file (/etc/default/tftpd-hpa) if you want TFTP to work without having to create the files first. The problem is, I have set this parameter and restarted TFTP , but it is not working.
Here is my /etc/default/tftpd-hpa file:
# /etc/default/tftpd-hpa
TFTP_USERNAME="tftp"
#TFTP_DIRECTORY="/var/lib/tftpboot"
TFTP_DIRECTORY="/tftp"
[code]....
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Oct 21, 2015
When I connect my Debian PC to my WiFi router my PC doesn't get internet if other devices are connected to it .
When i disconnect those devices and connect my Debian PC only then my PC connects to internet but other devices connected to it later do not get inernet connection.
When I connect my Debian PC using LAN Cable to the same router all devices work fine.
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Oct 30, 2010
I've moved a linuxbox from being my gateway (nat, etc) to behind a new gateway (a DD-wrt router). For transparency purposes, I'd like to continue using the old box services, and just have the gateway in front of it.
Here's what I did:
The newgateway is setup for class C, 192.168.0.0
This configuration works, but sometimes it doesn't and I haven't figured out why yet.
At sometimes, clients on the LAN get throughput rates with very little speed loss (using speakeasy speed test). They will run at 33M on the LAN, running through both the newgateway, and the oldbox, and get about 35M with directly connected to the cable modem.
Other times, it seems nothing can talk with anyone, and I am not sure why.
I know what I have done is a little unconventional, but it's a transitional thing, and I am not sure it is the cause of the problem, although it was the last things changed.
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Aug 16, 2010
After installing postfix on my server , all emails sent by a PHP class that i built , are received to spam folder , no matter what i do .am not an expert , except in PHP , the class i built works fine everywhere else except on this server , so i think the problem might be from the server it self ?some told me wrong configuration/software on my server , others told me wrong DNS stuff . actually i don't understand the DNS stuff , and am not an expert in linux softwares and services but i cann install/configure them , so could anyone please check the DNS for problems ?
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Jan 7, 2016
I am studying Debian, the postfix service this night cannot send and recevied outside email,internal work fine, i check the log found is show "no space left device"
i run command df -i
found
/dev/mapper/mailbox-var use 100%
What is the file for? how can solve it?
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Aug 14, 2010
I am thinking of moving the router behind a server and connecting the server directly to the internet via a modem. Are there any security issues related to doing this? or other things I should be aware of. Iptables are implemented on the server blocking access on unused ports.
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Jan 12, 2011
Not long ago I installed the Linux version of the Real Player (bad, bad me,I know) on my Debian Lenny system. Now Kmail will only open mp3 files attached to incoming mail with the Real Player.Outside of Kmail I have VLC set as my default player for mp3 files and that works fine but Kmail isn't respecting my system choices and I can't find any means, or reference to, changing the default media player in Kmail.This is so incredibly frustrating that it's almost like being stuck with a Windows system again.As a full-time Linux user I've lost my sense of martyred patience.
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Oct 14, 2009
Using exim4 only for sending email SMTP
I'd like to use Exim to remove the line header:
Received: from [111.111.111.111]
by HOSTNAME with esmtp (Exim 4.69)
what setting i should use and where should i put it in the exim4 configuration file, transport, router etc.
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Mar 20, 2011
I know you've probably seen this type of request numerous times, but I just can't get it right.Objective: to get to grips with Linux network routers.Problem: Cannot ping across the router.On the router itself, I can ping to clients on ether side.Server: Ubuntu 10.10NIC1: connects to home broadband router. Static IP address. Eth1 has no problem pinging outside world.NIC2: Static IP address. This NIC is configured for DHCP server and will have a home machine or two connected to it assigned IP addresses from the DHCP server.Set ip forwarding from 0 to 1
/etc/sysctl.conf
net.ipv4.ip_forward=1
Static assignment of IP addresses to the 2 NIC's of router.
[code]....
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Sep 20, 2010
I have a desktop computer (Ubuntu) connected to one of the LAN ports of the Cradlepoint MBR1000 router via an Ethernet cable. I also have a Verizon mobile broadband USB modem (USB760) plugged into the USB port of the Cradlepoint router.I also have a laptop (Ubuntu) with a wireless wi-fi adapter (802.11g). The laptop also has an Ethernet card but I'm not using it. The desktop computer does not have a wi-fi adapter, only the laptop does.
With the above setup, I have Internet access to both the desktop computer as well as the laptop computer, which I am well pleased with.Is there a way I can have file sharing between the desktop and the laptop, or at least ping between them, the way I have it set up? I can't use the ad-hoc method because for that to work each computer needs a wi-fi adapter. The router is using DHCP but can also be configured manually.
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Jan 25, 2011
I m using an adsl modem router for connecting into the internet while my operating system is windows 7,but i want to learn open source platforms like UNIX and Linux. so for this reason i install a Linux distro which is centos5. i want to ask how i can configure my modem router with centos. modem router model is Billion BIPAC 5210s.i search internet for its drivers and the only thing which i found modem driver for windows platforms and nothing esle want to know that for installing this modem with my centos i need to download its drivers or not and if the answer is yes or no how comes !
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Nov 18, 2010
I have a CentOS server that has some problems with the network configuration. I can't find the correct settings / help on internet
The computer has 3 network connections. ETH0 is connected to a router (a FritzBox 7050 with IP address 192.168.178.1). The ETH0 card has a fixed IP-address 192.168.178.22 - gw 192.168.178.1. Firefox as well as the webserver are working fine. ETH1 is not working (and not activated) because of problems with the drivers. ETH2 should be the intranet connection. This interfacecard has IP-address 192.168.17.1 and is connected to a switch. After the switch I have 1 computer attached with IP-address 192.168.17.3 - gw 192.168.17.1 A ping from the server to this computer gives good results and a ping from the computer to the server also. trying to ping to the fritz-box or to the internet constantly fails. As far as I can search, I'm certain that the failing is caused by routing-problems on the CentOS server.
the command 'ifconfig' of the server results :
eth0 Link encap:Ethernet HWaddr 00:1E:E5:D5:F1:C4
inet addr:192.168.178.22 Bcast:192.168.178.255 Mask:255.255.255.0
inet6 addr: fe80::21e:e5ff:fed5:f1c4/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[Code].....
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Feb 1, 2010
I went to see if the iPhone was connected and it wasn't listed--and she was now on my wireless network, on the Internet. For the past month, I have experienced slow Internet (the Qwest people came over three times to fix the problem, to no avail.) And, when my laptop and desktop are turned off, the modem still shows activity, as if someone was downloading large files. Qwest insists that my network is secure and no one is using my network (and my house was built in 1997, so the wiring is fairly new and I have had NO issues with Internet/phone and had Qwest service longer than I can remember).
To make a long story short, I am concerned that my router has been hacked. I live in a rural area, so there's no teenagers or weird-o's around that I know of that would do that (unlike city/suburban areas)--and my Linksys router is "lying" to me, as my nephew was ON MY NETWORK and the SSID, MAC address and IP number was not listed on the LAN device list--only my laptop/desktop are listed, and she was happily checking emails on my network. I have changed my WPA2 password three times just in case, no fix.
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Dec 29, 2009
I've just spent the entire night trying to get my computer to share Internet with my laptop. I have DSL Internet with the modem configured to bridge mode. On the openSUSE server I have two NIC's. When setting up the DSL (pppoe) it created a dsl0 which is using the NIC eth0. So now I have dsl0, eth0, and eth1 I configured eth1 for DHCP server. When I connect with my laptop using DHCP it gets an IP address just fine. However I can't access the Internet. I think my problem is in the Kernel IP Routing Table. Here is the output from /sbin/route -n
[Code]...
dsl0 obtains IP from ISP eth0 is set to DHCP although that confuses me because how can the same NIC have two IP Addresses? eth1 static IP 10.30.60.1
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Nov 18, 2010
I am having no luck configuring ProFTPd on a Debian Lenny production server we use to host our MySQL databases and a few websites. I had originally set it up so I could login and manage our internal sites, but I have the need to allow a few clients in to access their sites that we host. I am trying to root the users in their site directory, which would be "/sites/www.whatever.com/".
It just hit me while typing this. Is it possible to create a user without a shell to prevent login via SSH and set the home folder to /sites/whatever instead of /home/username? That would allow me to continue operating with my current configuration and root them in their site while preventing SSH logins.
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Jul 20, 2011
i have a HP MSA 2312fc SAN with 2 LUNs configured. The first LUN (LUN ID 1) is correctly connected to the system, but when i connect the second LUN (LUN ID 30), i find in the syslog this message: multipathd: 8:64: size 6835937472, expected 5267578112. Discard
Here is the multipath.conf
[Code]....
So I correctly see the two luns, but multipath doesn't create the relative devices. Under /dev/mapper I see: control mpath0 mpath0-part1 mpath0-part1 is the first lun, the one I mounted in a directory under filesystem. I can't find the device for the second lun
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Apr 5, 2010
I am *finally* getting around to rebuilding my file-sharing computer. I'll be sharing files with both Linux and Windoze machines. It's a home network, so there's nothing fancy needed. I know I have to tweak my smb.conf file until I'm satisfied with the features and security. I'm using SWAT and I'm starting with a bare-bones conf file. It's not secure but I can see the server and selected files/directories from my other Linux box.
My really dumb question is, do I have to reboot both the server and the client machines every time I change the SAMBA configuration? I thought I just had to stop and restart the SAMBA service in the SWAT software - but then the server disappears from my client. It looks like I need to reboot both machines for the client to see the server.
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Aug 23, 2011
I have some errors when run the mount -all command: mount: wrong fs type, bad option, bad superblock on /dev/sdc5, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so Failed to open /proc/filesystems: No such file or directory
[Code]..
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Aug 3, 2011
I have a PC104 running debian. I have 3 hard drives (in addition to the one booting) mounted in fstab by UUID. I use the options defaults,error=remount-ro. However, this means that when I boot with the hard drives not attached, I have to press Ctrl-D to bypass when the boot discovers the drives are missing. Is there a timeout commandoption I can add to fstab so that it automatically continues booting even if the hard drives are not attached? I could not find anything on a timeout command. (I tried adding timeout=1000 but no-random guess)
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