NIC is connected to a LINKSYS WRT54G running DHCP. There are plenty of available IP assignments. All other PC that I have connected to the LINKSYS work fine. The CAT 5 cable is fine.Why is this NIC not taking a DHCP assignment ?
View 14 RepliesI've a DHCP server in RHEL 5 and 100+ users in my network. I mapped 30 users MAC address with ip. Rest are getting ip address automatically. In my network, users tend to move from one department to another frequently. I've created scopes according to departments. (i.e. Dept A - 172.19.54.10-172.19.54.30 and so on for other departments).
1) I want to configure DHCP server in this way, that a client have to autheticated by DHCP server before receive and IP address.
2) Second, Whether DHCP server have free IPs in scope, but only clients can obtain IPs those MACs are mapped, rest should not without authentication or authorization.
I have a lab with 1 switch and 2 machines attached. One XP station and a debian lenny server. My debian runs dhcpd with this configuration
subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.31 192.168.1.254;
default-lease-time 345600;
[code]....
I'm trying to restrict dhcp to only provide setting for a list of MAC addresses (about 300 macs) Using the following option is not good to me because I have not a pattern in my clients mac.
class "private-hosts" {
match if substring (option hardware,1,11) = "01:00:50:56";
}
[code]....
I've try using iptables with following configuration, but XP still getting IP from dhcpd:
iptables -P INPUT DROP
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT
[code]....
I have a lab with 1 switch and 2 machines attached. One XP station and a debian lenny server. My debian runs dhcpd with this configuration:
subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.31 192.168.1.254;
default-lease-time 345600;
max-lease-time 691200;
option routers 192.168.1.1;
option subnet-mask 255.255.255.0;
option domain-name "lab.com";
option domain-name-servers 192.168.1.12;
option netbios-name-servers 192.168.1.12;
option netbios-node-type 8;
option broadcast-address 192.168.1.255;
option ntp-servers 192.168.1.12;
ddns-updates on;
ddns-update-style interim;
}
I'm trying to restrict dhcp to only provide setting for a list of MAC addresses (about 300 macs)
Using the following option is not good to me because I have not a pattern in my clients mac.
class "private-hosts" {
match if substring (option hardware,1,11) = "01:00:50:56";
}
pool {
range 192.168.1.31 192.168.1.254;
allow members of "private-hosts";
}
I've try using iptables with following configuration, but XP still getting IP from dhcpd:
iptables -P INPUT DROP
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT
# Full from Localhost to Localhost
iptables -A INPUT -i lo -j ACCEPT
# Full from My PC
iptables -A INPUT -s 192.168.1.2 -j ACCEPT
So I can't limit DHCP for specific macs.
A DHCP server in RHEL 5 and 100+ users in my network. I mapped 30 users MAC address with ip. Rest are getting ip address automatically. In my network, users tend to move from one department to another frequently. I've created scopes according to departments. (i.e. Dept A - 172.19.54.10-172.19.54.30 and so on for other departments).1) I want to configure DHCP server in this way, that a client have to autheticated by DHCP server before receive and IP address.2) Second, Whether DHCP server have free IPs in scope, but only clients can obtain IPs those MACs are mapped, rest should not without authentication or authorization
View 2 Replies View RelatedI am having some difficulties comprehending some networking concepts relating to multiple subnets and dhcp servers, or dhcp relay servers. I have built home networks many times before, and they have all followed a very simple formula. A single subnet, let's say 192.168.1.0 which is fairly typical for me. My network's DNS server is always also my networks DHCP server. Typically at 192.168.1.1. When a DHCP client broadcasts for an IP over the subnet, 192.168.1.1(My DNS/DHCP server) will not only tell the client what it's new IP is to be, but will also tell the client what it's Gateway server is. This is ALSO 192.168.1.1 for me typically.
In this manner, a client broadcasts for networking information and is given a usable IP, and told to use 192.168.1.1 for most other functionality. Very simple. However, I am uncertain how to expand this to other subnets. Say.. 192.168.2.0.
A: I can use a separate DHCP server for each subnet. or B: I can use a DHCP Relay agent for 192.168.2.0 to pass the DHCP requests to the primary DHCP server on the 192.168.1.0 subnet.
Option A: is fairly straight forward and have had it functioning fine, but it is really B: I want to know more about. It seems somehow much cleaner to me. I prefer to centralize as much of my network provisioning services as possible. It makes it easier to manage TYPICALLY. My question though is related to Gateways and the use of DHCP Relay Agents....
I'm trying to boot my Fedora 12 partition, but am failing miserably, when I try to boot Fedora 12 I get "ERROR: NOT AN ASSIGNMENT"
my 40_custom file is as follows:
Code:
#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
[code]....
Note that I tried this using the entry that is currently commented out and I had the same result. Does anyone know what is wrong? The entry that is currently uncommented came directly from the grub entry created by fedora itself (before I installed ubuntu).
I'm working on a tutorial using Backtrack 4 Live USB, and I would like to take a screencast of what I'm doing (not just screenshots)So far I have tried these application with limited success:-recordmydesktop -xvidcap -wink -istanbul -vlc -vnc2flvEach time I try the resulting files are generally choppy (at best 1 frame per second) and most don't even end up with a clear view of the screen each time.
View 2 Replies View RelatedI'm trying to dual boot a server with Windows 2008 R2 and RHEL 5.4. I've done these dual boots 20 or more times in the last few months, and never had a problem. (This is the first time I've tried it with R2, mind you.) I do the normal install Windows on one drive, then install RHEL on another. The first time it reboots after the install (which is still part of the install, as it's my kickstart script prompting the install and it still has post to run), it goes to the grub menu, and I can select RHEL and it boots into it fine. After that, if I reboot it just goes directly into Windows, without seeing grub at all.
I've tried pressing esc, shift, various things in case it's hidden, with no luck (also, I have a 30 second timeout set and it's not sitting there that long). I've tried editing the grub.conf to remove Windows entirely, and it still just goes into Windows. I've reinstalled RHEL 3 times (yay for kickstart files!), and this exact behaviour happens every time. Does anyone have any idea of what might be going on here
I have got a refurbished acer aspire one with linpus linux...now
1. the mozilla firefox browser seemed pretty much old...but if I try to download a new version it comes us as a zip file...
2. same to microsoft docx...they come as zip file...can not sort out the updating of the browser, can not download docs files...
3. also the desktop is a very handy, but unattractive looking one...how can I get a desktop customize by my own?...
4.the inbuilt messanger is not taking any id except the one from gmail.
I have it so that an Env object contains all the variables in the current scope, and the parent scope. You can also save them to variables like objects, and my idea is to use the "." operator to get values from them.
First, how do I assign to them? I currently have it that only a variable name can be assigned to, but you should be able to assign to an "obj.value" expression, too. How do I keep track of what variable to set and still be able to say it in an expression and have it evaluate to the variable?
Second, these object don't really have a "type", they're just containers that contain any values you want under any name you want. How can I, for example, define a primitive "boolean" object and have things like if statements recognize it?
I have two files. One huge one (200.000+ lines) called 'db' and one big one (15.000+ lines) called 'indices'.What is the quickest way of filtering out the lines in 'db' containing any index (anywhere on the line) from 'indices'.Is there a faster approach in bash, linux?
View 1 Replies View RelatedI have ubuntu 10.10 installedWhen it was new It was too speedy in starting upbut, Now It is taking about two to three minutes to getting started.I tried to remove some applications from System/Preferences/Startup Applications,But no differenceI want to speed my systemIt has no problem in speed after starting up
View 14 Replies View RelatedFor some purpose in my home network I want to get a specific ip to my localhost on that machine.Like say I typed 123.123.123.123 I want that go to localhost.
View 3 Replies View RelatedI have 2 Oracle users that generate .tmp files under /var/tmp. By default, the files have the permissions 644. Now, a need has arisen whereby the files created by these users have to have the permission bits as 664. Obviously, I changed the UMASK value for these users from 022 to 02. But the files are still getting created with 644 as the permission.
I tried restarting the application as I read that a relogin is required for the UMASK change to take effect. Even that hasn't helped.
I have assignment to write bash script and I have to submit it after tommorow . I do not have experience to finish it by myself.I am really need help if any one can contact me. on my email I will be thanks him/ her.
View 14 Replies View Relatedfirst: PXE flawless bind to dhcp address but put next binding state to free second: when installer calls init script to reinit ethernet driver (e1000 (vmware)) binding fails 11.2 opensuse fail to reinit dhcp with log entry "no free leases" third: when manual set network install works how to preserve dhcp lease on reinit of driver?
View 1 Replies View RelatedBack 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.
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.
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?
I have 2 hard drives and when I do an auto install.. Ubuntu decides to take both hard drives... how do I prevent this from happening without my intervention?
View 2 Replies View RelatedI have a directory /models/ with the permissions
drw-rw-rw- 2 owner developers 4096 Jun 24 15:13 models
these were set with
sudo chmod -R 0666 *
My user has developers as the primary group (the same group as the file), but I cannot access the directory via the terminal or ftp.
[myUser@machine]$ id myUser
uid=503(myUser) gid=505(developers) groups=505(developers)
$ cd models
-bash: cd: models: Permission denied
I had the same problem before the directory belonged to my group, and I even went so far as to restart the server, without any luck. How do I set permissions to this directory so that I and other members of the group developers can access it?
The find command is taking too long on my machine to complete. When I use time command, I find that sys time and user time are too small as compared to real time. Is my find process not getting scheduled properly?
I interrupted the neverending find command and got the following statistics:
Real time : 5min
Sys time : 1.1 sec
User time : 3 sec
I was running
find / -name ls 2>/dev/null
I have around 100 users. I want to take backup of files which are on desktop for every user. My user directory path is -: /home/dr/<user_name>/Desktop
1) Script has to run on a particular time everyday
2) Script has to take backup of all files present in "Desktop" directory
3) Make a tar with name "yyyy-mm-dd-desk-files"
4) Make directory outside "Desktop" with name "Desktop-Backup", if already exist then don't make this folder.
5) The tar have to moved in this folder.
6) Remove the files from "Desktop" directory. (i.e. Desktop should be empty)
7) Mail the status that "Backup Successful"
I have about 200k data entries in xml file. I wrote php script (using php-xml) to read xml file and insert into mysql. At first it went really quickly inserting, then after a while after inserting 100k entries, it slowed right down, just like it would not even doing anything. I have CentOs with 512M on VirtualBox running as server.
View 3 Replies View RelatedI have some confusion about one of my partition and the space it is taking. df -h output is given below;
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/ddf1_ADVDTARTINGp1
494G 18G 452G 4% /
[code]....
above information is showing that /var/lib/mysql partition total size is 379 GB and it is 68% used. However when I execute command du -sh /var/lib/mysql it shows following output.
# du -sh /var/lib/mysql
45G /var/lib/mysql
Now I want to know what files are taking space to make the partition 68% used. I want to list down all files in that partition with size.
I had this come up in logwatch: /dev/sda5 4.8G 3.6G 960M 80%/
Any ideas how I can find which files are suddenly taking up the space?
I am working in ubuntu 9.x (linux karmic kernal) .I have restored the content from CD to hard disk. In the mid way of this process, it was failed. I would like to know this below thiongs,
1) which position it got failed ?
2)Any offset option is there in linux to point the particular CD position ?
software required for taking remote desktop in mint 10
View 3 Replies View RelatedQuote:
#!/bin/ksh
DBcounttry_finalnofunc()
{
[code]....