I want to display the associated host name with each address.
I've found the /var/lib/dhcp3/dhcpd.leases file, but it appears to have an entry for every time a lease was issued so it's hard to tell which ones are currently active.
I installed dhcpd using:
Code:
Now when I try to run it, I get this weird error:
Code:
The error was:
I changed permissions to 777:
Code:
To no avail!
It's got something to do with AppArmor.
I don't think it is installed on this system:
Code:
I'm writing because my ubuntu server has started with troubles .
It's running Linux 2.6.32-29-generic-pae kernel for ubuntu server 10.04 and after the last update it stopped from giving addresses on clients connected.
Dhcp3 server it's running and the conf files are fine, but i can only use static addresses assignation now...
Also MYSQL has stopped working (installed for Bacula purpose) but now the dhcp problem is the biggest issue. I work in an office where dhcp is fundamental, too much clients (about 15) that are personal laptops also (so static assignation for clients is not a good choose).
Please any one could help me? It's two days I'm trying to figure it out without success.
also tried removing and reinstalling dhcp3-serer...no way.
Here are my conf files code...
I have dhcp3-server (isc-dhcp-server) installed on my Debian and now I got a question about how it's giving the IP addresses to new devices.
For example: I connected my laptop and dhcp server gave me 192.168.1.5 address. Will it always give me the same ip address when I connect my laptop or it will eventually change after some time (week-month)? If it's not changing it, then I am wrong about this.
BUT...If I am somehow correct and if it will change in a week and give me another random (like 192.168.1.8) IP even I won't change my laptop network adapter, is it possible to configure dhcp server to always give same IP address depending on what MAC it is?
To make it clear, I want that when I connect new device (new laptop/pc) dhcp server would give it random IP but same time it would note the MAC address and never change the IP on that MAC.
I know about MAC filters, but setting filters is when you know MAC address since beginning and want to assign IP for it, but in my situation I don't know the MAC address.
I have been at this for what seems like forever but i am getting somewhere after many errors i got dhcp3 reading the file and everything is almost there but now i got an error i cannot figure out.first my config file
HTML Code:
shared-network local {
subnet 192.168.0.0 netmask 255.255.255.0 {
[code]....
Ubuntu 10.10 w/ dual NICs
here's my etc/network/interfaces file code...
Here's the problem -- DHCP wont start and throws the error "Can't create PID file /var/run/dhcpd.pid: Permission denied." Somewhere I found a post that indicated that the following corrected the issue (I dont really know why):
ln -s /var/run/dhcp3-server/dhcpd.pid /var/run/dhcpd.pid
dhcpd3 -cf /etc/dhcp3/dhcpd.conf eth1
When I do the above DHCP will start (in theory, at least no erros are thrown). But if I ask DHCP to restart, it will stop, but not restart. And the error is "No subnet declaration for eth1 (192.168.3.2)"
I'm newbie-ish. Help me Obi-Wan Kenobi.
I been trying to set up a DHCP3-server on my brand new learning Ubuntu 11.04 server. I can connect when i put the IP infomation in manually, so I know everything else is working, just got to fix the DHCP problem before I put the machine into production on my home LAN. Can someone tell me if these config files located at /etc/dhcp3/dhcpd.conf and another at /etc/default/dhcp3-server are correct? eth1 is the NIC that will be the LAN side of the network, I double checked that...
Code:
/# A slightly different configuration for an internal subnet.
subnet 192.168.10.0 netmask 255.255.255.0 {
range 192.168.10.10 192.168.10.200;
option domain-name-servers 8.8.8.8, 8.8.4.4;
option domain-name "linuxrouter.local";
[Code]...
I Want to Develop Network Scanner Software. For that i need "Java Program to Display All IP Addresses in LAN".
View 3 Replies View RelatedIf, as an example, I issue a command:
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and it tells me xx bytes will be used,
and after that again:
sudo apt-get install build-essential libx11-dev libxi-dev
and again it tells me xx bytes will be used, do I get a second installed copies or does it overwrite what I did first?
how to display status of assigned & free ip addresses in a DHCP range assuming that i am working on a DHCP server ?
View 1 Replies View RelatedI am having an issue on my server where I can't access certain ip's erratically. These addresses could previously connect to us.I think it may be related to getting rootkitted. I know the risks in not reinstalling but we are not able to install yet at this point. I cleaned out shv4 and shv5 from the os and setup tripwire. The client can't ping the server and likewise back.From my personal computer they both respond to pings.The server is running denyhosts but that is about it in-terms of security.I can't find anyhting anywhere... No ipchains present, nothing in host.deny, subnet is 255.255.255.0.I'm really at a loss so I'm looking for some direction
I know someone is going to tell me that I have to assume all my files are compromised and i should reinstall; I did md5 checks on alot of files and there is no data on here that shouldnt get out and I check for stuff running that shouldn't be daily.The server is 10.04 server. Latest updates.Here is a list of installed packages
Code:
adduserinstall
anacroninstall
[code]...
Does anyone know the ubuntu update servers IP addresses. I am trying to fine tune my firewall rules and was unsure of what ip addresses to use for the update servers. I believe they are us.archive.ubuntu.com and security.ubuntu.com. However, I could be wrong.
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View 14 Replies View RelatedI have tried several places for help but I am getting no where...Here is my background.I have spent all weekend to replicate my development server back at home. I have an Apache remote server with 3 IP based virtual hosts pointing to
[URL]
Now I have been able to set up a VM on my desktop, installed the OS, the applications, the db server, apache etc. Everything is looking good so far. So right now I have,
[URL]
So when I go to 192.168.0.111, I go to [URL] so I guess apache is working aswell.What I want to do is, instead of going to [URL] I want to change it to another address such as a.me.add1How can I do this? I am looking through the virtual hosts section, I have changed server name entry etc but its not working.Can you tell me in big picture what I would need to do to set that up? My current set up doesnt really help me much once the site get the www address.tell me if Document Root of IP address 192.168.0.111 points to [URL] will it always resolve into that webaddress. That is if I enter 192.168.0.111 the browser will redirect it to [URL].
i have a linux machine installed with RedHat 4.7 x64 bit. toady our machine just hanged and the only thing we can do was to do an hard reboot.i saw that when she hanges all her disk looks offline. in /var/log/messages i only saw this error message:
kernel: lpfc 0000:10:00.0: 0:0713 SCSI layer issued LUN reset (0, 4) Data: x0 x0 x0
we have 6 disks in RAID 5 in this machine- SAS disks. i've search in the net and looks like the emulex driver told the SCSI to do a reset for some reason. how can i check this issue? machine is online now and everything looks ok but i'm afraid i have a problem perhaps with my disks and this is a production machine so it cant happened again.
My Firestarter logs show periodic outgoing connection attempts to IP addresses in countries such as Malaysia, China, Russian Federation etc... Fortunately, Firestarter appears to be blocking them. I suspect these are not good and want to find out exactly what process is initiating these outgoing connections.
View 6 Replies View RelatedThis is the current setup that we have: We have approx 20 clients who pay us to send out a type of e-mail called an E-Blast to their customers. We currently are using 5 Microsoft Windows Virtual Servers to do this. The problem is that those machines are starting to break down. There are times that it will take Microsoft Windows approx 9-10 hours to complete 1 job. This is way too long. We want to move away from Microsoft Windows for this particular type of job as it seems there are more customers who are wanting to use this type of advertising.
It seems that using a Linux Server "Command Line or Shell" environment would be the best way to go as there is no GUI like Windows. Since there is just text...that is something that would/should process very, very quickly.
I am in the process of setting up a new SMTP outbound mail server. This is the current software & configuration (what is installed on this new machine):
All of the customer data (Names, E-Mail Addresses, etc that these e-mails are going to) are currently loaded in a Microsoft SQL Database.
My machine that I am using is plugged into the DMZ. I have 1 ip address for the 1 network card. I have also added/bound 4 more ip addresses to that network card.
I have configured Postfix for Multiple IP Addresses.
I can, from the command line, send successful test e-mails and receive them in my personal account.
As far as I know everything is setup correctly. I can and will post requested information so that it can be verified that everything is setup correctly.
Here are a couple of my questions:
Ensure that I have my Network / Interfaces file and my Postfix's Master.cf/Main.cf files setup correctly?
How can I setup this server to be an Outbound SMTP server and get it to use all 5 of the IP Addresses to send these e-mails quickly?
What can I use to check and ensure that this server is in fact sending out emails on all 5 IP
Addresses (I heard that there is a program named "Postal" that may help in determing this).
I'm in the process of setting up a script in perl to make 1,000's of curl calls to my companies application on our test server. Our software does all sorts of tracking of data based on IP addresses using geoIP, so i was wondering if anyone knew of a way to fake these addresses to the server?I know a big issue with the IP faking is the return path but i dont really need this. I also cant do it on the hardware level since the script is going to be picking lots of different IP's at random.Anyone have any idea if this is possible and if so, are there any known libraries i can use for this? I prefer perl but any Linux compatiblie scripting language is fine.
View 1 Replies View RelatedI have a CentOS5 server with dual ethernet adapters + Webmin installed as my Router / Firewall / DHCP server working successfully with 1 static IP from my ISP. I also have 7 additional static IP addresses from my ISP needing to configure to individual servers inside my network. I have configured the additional virtual interfaces, but am lost on how to route data specifically from additional ISP address to specific internal network address.
Below is my desired configuration.
98.173.159.xx1 = eth0 physical interface ==> eth1 192.168.1.1
98.173.159.xx2 = eth0:1 virtual interface ==> 192.168.1.10 ==> CentOS Server 2
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98.173.159.xx4 = eth0:3 virtual interface ==> 192.168.1.30 ==> CentOS Server 4
98.173.159.xx5 = eth0:4 virtual interface ==> 192.168.1.40 ==> Mac OS X Server 1
98.173.159.xx6 = eth0:5 virtual interface ==> 192.168.1.50 ==> Mac OS X Server 1
98.173.159.xx7 = eth0:6 virtual interface ==> 192.168.1.60 ==> Network Attached Storage Server 1
98.173.159.xx8 = eth0:7 virtual interface ==> 192.168.1.70 ==> Windows 2008 Server 1
I am planning on installing an Apache server today. I know how to get it to point to addresses like "localhost" or my outside ip, but how do I get it to point to a URL like [URL]? (That's just an example URL)
View 4 Replies View RelatedHave DHCP3 running on an ubuntu server. Using config of the below but the 10.1.1.2 address is being given to a windows pc (which does not have that MAC address). Tried getting windows to release ip address, then clearing the lease file and restarting dhcp3 service, then renewing dhcp request from windows, but address 10.1.1.2 is still given.
Code:
I have followed the ubuntu guide for setting up a dhcp3-server server for my internal network, I have installed dhcp3-server, configured it refuse to start, here are some background:This is my /etc/default/dhcp3-server:
# Defaults for dhcp initscript
# sourced by /etc/init.d/dhcp
# installed at /etc/default/dhcp3-server by the maintainer scripts
[code]....
I'm using ubuntu 10.04, Im going to setup LTSP sever, But I cant start dhcp3 server this errors are come, how can I fix this this error comes when I tried to start dhcp3 server
lachitha@lachitha-desktop:~$ sudo /etc/init.d/dhcp3-server start
[Code]...
This is kinda strange, i just installed dhcp3-server in ubuntu 11.04 , but when I try to find the starting script in /etc/init.d/dchp3-server start, it states
bash: /etc/init.d/dhcp3-server: No such file or directory
I have installed the dhcp3-server,howcome there is no script for executing dhcp server?
I've never had this much trouble, but maybe it's because I have not setup a dhcp3-server in some time.
My server has three NIC cards. The Internet connection is on eth2, and I'm trying to get connect other computers to the server through eth0.
It's suppose to be relatively easy, unless I'm assigning specifics, right?
Code:
#
# Sample configuration file for ISC dhcpd for Debian
#
# Attention: If /etc/ltsp/dhcpd.conf exists, that will be used as
[Code]....
I have an old Linksys WUSB54G USB wireless card lying around, and occasionally I like to use it as an access point for my laptop. For assigning IP addresses I use dhcp3-server. The only problem is that the server attempts to start itself up on boot, which I do not want- I want to start it up manually if I need it. how to disable this service on boot?
View 9 Replies View RelatedI need to create a network boot from 1 laptop to another, with a crossover ethernet cable between them, no routers no nothing, my computer is supposed to be the server. I followed half dozen tutorials over the internet but I think my major problem is with the dhcp serverfollowed this tutorial[URL]but when the client boots it makes several dhcp requests but doesn't respondwireshark capture looks something like this until the client times out
Code:
1 0.000000000 0.0.0.0 255.255.255.255 DHCP DHCP Discover - Transaction ID 0x200d8ad
[code].....
ver: 9.10 how do I restart dhcp3 after changing dhcpd.conf?
View 3 Replies View Related
