when i assign ip manually to a machine it gets ping by server and it also itself pings server but when i chose to use client machine as dhcp , so that it can directly get assigned ip from server, it does not get ip, instead random ip is provided which is out of range specified at server side in /etc/dhcpd.conf file.
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I have a network consisting mostly of Windows Vista and 7 clients and an Ubuntu server. The server provides both the DHCP and NTP services through dhcp3-server and openntpd. In my dhcpd.conf, the subnet is declared as follows:
subnet 10.10.10.0 netmask 255.255.255.0 {
range 10.10.10.10 10.10.10.200;
option broadcast-address 10.10.10.255;
option routers 10.10.10.1;
option ntp-servers 10.10.10.1;
The clients don't seem to be using the NTP server though. When I capture the network traffic with Wireshark during the DHCP process, I also see no mention of the NTP option in the DHCP offer message. I am not quite sure if the clients would have to specifically request that option to receive it or if I have to make another configuration to offer the option.
If I use static TCP configuration, (my Linux is Red Hat, but SuSE is quite similar) I define DNS's in file "/etc/resolv.conf" and Default GateWay in file
"/etc/sysconfig/network" (/etc/sysconfig/network/routes undef SuSE).
So, when I want to display those values, I just display the contents of the file. But, if my TCP configuration uses DHCP server ... I dont know the command to display those values. PD.- in straight : I need a command to display the DNS's in effect on a TCP/IP configuration that uses a DHCP server. Also, a command to display Default Gateway would be welcome.
I have two servers behind different networks. First network is protected with firewall provided by the router and there is no firewall in the server:
[Code]....
As you see, there are no difference in nmap output If I check with tcpdump, which packets are sent from 192.168.217.73 and 192.168.13.19(tcpdump -i eth0 src host 192.168.217.73 and tcpdump -i eth0 src host 192.168.13.19 respectively) towards me during nmap scan, there are none. It's understandable, as there should be no reply when port is filtered. Is there somehow possible to detect, whether firewall is active in the server or in the router?
Is this possible to record keyboard inputs in a file which will be provided during running a script.? Means suppose there is a script ./instal.sh To run this script, some inputs need to be provided.Is this possible to record these inputs in a file?
View 10 Replies View RelatedHow do we configure to resolve for hostnames when an IP address is provided to the DNS server.
Things I tried
The DNS daemon was started by the resolution failed. Find the logs below
** server can't find 11.127.168.192.in-addr.arpa: NXDOMAIN
So I built a new system few months to act as a development/"mess around with" server with an Asus Mobo and a Q6600 processor and 8 gigs of ram. Along with file, web and app hosting, I also do some virtualization on it... or atleast I had hoped to.
Ever since the first install, I've been randomly getting crashes and lockups. Sometimes it would just dump an error to the screen but stay alive, and sometimes it would dump an error and then lock up fully. The error mentions something about "kernel not tainted" etc. I will post the detailed error once it comes up again, as I have just formatted it again.
Other problems include downloaded files becoming corrupt. Files downloaded through any means (wget, torrents, ssh, ftp etc.) seem to randomly get corrupted (ie: the hashes are wrong).
I currently have one WD 150GB raptor as my primary OS partition, and 3 WD 1TB greens as my storage in an mdadm raid 5 array. At first, I had thought it was the raid array or it's drives causing issues. After painfully transfering the data off of it, I took the drives out and tried to run ubuntu with just the OS drive for a while. This still had the same issues. I then put in only one of the 1TB greens and had the same issue...
I downloaded WD's hardware diagnostic tool and ran full scans on all the drives. They all check out fine.
I left memtest running overnight and it had no errors either.
Most recently, ubuntu would not even install. It would get stuck at the stage of partitioning, and the keyboard lights would flash. After much googling, I tried popping in "noapic nolapic" to the end of the grub string, and it managed to install.
Now, I'm in a fresh system and just wgetted vmware server. However, it wont untar, I just realized the MD5 hash doesn't match!
So definately not the memory or the hds... I'm assuming it has to do with the APIC? From what I found on google, it seems as though this is only needed for the install.
Do I really need this to be on the boot string too? From what I understand, APIC allows processes to be divided out to the least loaded CPU. Having a quad core, I'd rather leave this on since it seems somewhat beneficial... I have yet to try putting this into the grub yet since I'm offsite and need
As a side note, this latest install is using just the WD Raptor as an OS drive.
And I'll post up the dumped errors if I get them again. There were none dumped out when the vmware download corrupted. The message format is very similar to the one here: [url
However, sometimes it mentions ext3 (or one of the other filesystem types I had tried with thinking it was a problem with ext3) Again, the error message is not the EXACT same, however the format is very similar...
I'm stumped here as it seems like after an update etho:0 has assigned itself 2 x IP Addresses. I don't understand how this happened or how to fix it so some help would be great as I cannot access cPanel while it's like this or my sub directories.Here is a print of ifconfig
-bash-3.2# ifconfig
eth0 Link encap:Ethernet HWaddr AA:01:5F:9A:FE:26
inet addr:95.154.254.38 Bcast:95.154.254.38 Mask:255.255.255.255
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I am currently programming a suite of daemons in c++ on CentOS 64. More or less all those daemons are SOAP servers, with the SOAP part handled by gSOAP.
One of the daemons is a monitor sitting on a certain server and more or less just checking if the other daemons are up and running - but also offering a SOAP interface to get the 'current situation' on the machine.
Whenever the detected situation does not correspond to the defined (i.E. a process which should be is not running) it is started up.
This part, I implemented via a system() call that starts the other process.
I was a little confused when lately often this monitoring process would not start because it could not bind its server port - the one the SOAP server is listening on.
And confusion got bigger when netstat told me that the port is assigned to one of the processes that were before started by the monitor..?
Even better: if I then kill the process of which netstat tells me it holds the port, the next netstat shows the next monitor-started process as the one listening on the port..
Only if I kill all the processes that were started by the monitor, the port is released and I am able to launch the monitor again.
Now I wonder: why does this port get 'reassigned' to the children - and most of all: how can I prevent this from happening?
The Skype audio test claims I have configured Skype correctly. But my new Creative Live!Cam Socialize (Which includes a mic) needs some drivers as only those for MS Windows are provided. Creative spec requires a Linux kernal 2.6 or later which I think I have.
View 1 Replies View Relatedi hav configure dhcp server. but the ip is not getting assigned to my client machine.
View 3 Replies View RelatedI have installed Enterprise Linux Version 5 provided from Oracle
I am able to access Internet using network cable
how can I enable WIFI service ,so that I can use internet without the network cable
i recently install openoffice in fedora 12 and error occured the error is : the action could not be completed because the name org.freedesktop.packagekit was not provided by any .service files. what is link to download latest openoffice for my fedora 12,?my laptop model is asus k50in.
View 1 Replies View RelatedWe have quota system in home directory and there is binary aquota.user file.
How do i determine how much quota is assigned to a user?
I really need to know this for a linux server, but since it also applies to client OSes, I figured the question should be posed here instead of server fault.
View 3 Replies View RelatedI just installed Fedora 13 on my ESX box.I have Fedora 13 Machine which was early having 1 network adapter.I added a new Interface type: e1000 to this VM.Now,My ifconfig says:
Code:
[root@fedora-13 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:50:56:BA:00:15
inet6 addr: fe80::250:56ff:feba:15/64 Scope:Link
All i was trying to provide IP to eth0 and eth1 through dhcp.is it possible to provide two IP address to eth0 and eth1 both through DHCP.
Could you tell me what two IP addresses could never be assigned to any host computer?
View 2 Replies View RelatedIs there a way to get the current time as provided from NTP (not the currently set time on the server)?
View 4 Replies View RelatedI would like to create several aliases to eth0, but have the addresses assigned by DHCP instead of being set to static IP's. Is this even possible? All the examples I've seen assign a static IP using the command:
ifconfig eth0:0 192.168.1.11 up
I see from dumping executables that seg selector 0x10 is assigned to my stack segment and to my data segments (.bss .data COMMON). The code is using 0x08. My question - how can I control this? I've looked at all the command line options and don't see it. I have a different program that uses 0x10 for code and 0x18 for data. I note that the second program has i386 in the architecture field in the linker script, whereas the first one referenced has i686. Is this what causes the difference? I understand that this architecture field triggers something regarding a library named BFD - is this where I should look? If so, where do I find it? I am runnig fedora. Is there a way to control the association of sections in the linker script with segment registers? I can set up segments in the gdt and can asign them to segment registers. I can - when writing in assembler - assign code to a section. I can relate a segment in the gdt with a register.But I dont see how to tell the section which segment register it is associated with Finally I see that the gcc compiler decides - based on how I initialize a variable - whether to put it into bss or data or COMMON. Do I have any control over this?
View 1 Replies View RelatedOnce you add a user(s) to be an administrator on the group you've created using gpasswd command (for example, i've added joe (username) as administrator for payroll (groupname) group using gpasswd); is there any way for me to view the list of users that I've assigned as administrators for a particular group? if so, what is the command line that i need to run?
View 2 Replies View RelatedI install Redhat9 and run proxy(squid) on this server. I test with a PC with IE put it proxy ip address any other web site is working fine but not for radio&TV channel online, i found many radio and TV online web site can not start to play after click the link.Please anybody help to advice what should i check on squid?
View 1 Replies View RelatedUsing gnome terminal (Ubuntu 10.10), is there a way to execute the default application associated to a file type, only by typing its name, as it is possible with Windows ?
For example, say I create a mime type associated to every file with the pattern *.abc. Lets say I associate this file type to application 'my_app'.
If I have file 'my_file.abc' in current folder, what I want is that when I enter only 'my_file.abc' at the prompt, it executes 'my_app' feeding it with 'my_file.abc' as first argument. (assuming of course 'my_app' is in the path)
I have created custom rules following: edit > message filters > incoming filter > (custom filter), none work. Also, by right clicking a message and, create rule from message > filter based by subject, sender, and recipients. Accepting all default (auto populated) conditons. None of the filters work at all? Seems this is a popular problem that has not found a solution except to use Thunderbird. not including ThunderbirdWhen I select a message that is supposed to be filtered to a specific folder and go to Message > Apply Filters. message goes to the assigned folder, but I want it to skip the inbox all together.
View 5 Replies View RelatedI just bought a new mouse - just a cheapie usb wheel mouse but it has an extra 'thumb' button which I thought I might as well set up to do something useful. I used 'xev' to determine the numbers that the OS had assigned to the buttons, and I found it wasn't quite what I was expecting:
left = 1
wheel-as-button = 2
right = 3
wheel-up = 4
wheel-down = 5
thumb = 8
I thought the right button would be '2' and the 'wheel-as-button' would be 3 - that's just how I've always seen them referred to in explanations, and I thought it was standardised. Not a big deal - the context menus still pop up when I click the right button so it all works ok. (And I just discovered the wheel-as-button does a 'paste' operation when it's clicked. Weird - I've never noticed that before...) But the thing that I find particularly odd: why is the thumb button assigned as '8'. What happened to '6' and '7'? Does the operating system assign these numbers, or are they built into the hardware in the mouse itself? Again, no big deal, I know I can remap the buttons if I need to, but I was just curious as to how this all works and google didn't help.
I have attached usb memory to my Linux server and I want to add it to my /etc/fstab .Can you please let me know how can I recognize it from my"/dev/?" list ?
View 14 Replies View Relatedhow 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 RelatedDoes linux kernel 2.6 support suid & guid?. I just read somewhere that "latest linux kernels does not support suid & guid as it can pose a security risk if the setuid attribute is assigned to executable programs that are not carefully designed". I need a confirmation about what I say is correct or if not please correct me.
View 6 Replies View RelatedThe software: Ubuntu Server Edition 9.10.The wetware: A programmer doing his best (read: ignorant, shitty) as an ad-h.When I plug the USB thumb drive in, the install OS gives it a drive letter -- /dev/sdb -- and it pushes the original /dev/sdb down to /dev/sdc. The installation works without a hitch, and GRUB2 installs, dutifully pointing the root at /dev/sdc1 instead of /dev/sdb1.I let GRUB2 start normally ("drive not found"), holding the <shift> key to get to the "rescue>" prompt.From there, I issue "ls" to discover that GRUB can NOT see /dev/sdb, and I can tell that because what is showing up as (hd1) does NOT have three partitions as it should.GRUB2 sees a total of 16 drives, not 26, and one of the drives it sees is "fd0" (there is no floppy drive).Issuing commands like "set prefix=(hdx,y)" and "root=(hdx,y)" have no effect as, I think it's just pointing to the (reiserfs)content drives and this GRUB2 tells me "unknown filesystem".I did try them all in vain, hoping that maybe I'd find a kernel somewhere.I used the "rescue" mode of the Ubuntu installer (the USB thumb drive) to get to a root prompt.From there, I mounted /dev/sdc2 (the "shifted" /dev/sdb2) onto /mnt, I mounted /dev/sdc1 (the "shifted" /dev/sdb1) onto /mnt/boot,and then I chroot'ed to /mnt.I edited /boot/grub/grub.cfg, editing every instance of "root=(hd2,1)" to the appropriate UUID for the "real" /dev/sdb1. Then I issued update-grub2.It refused to work giving me an banal "no such partition" error or something like that.
We originally had this server functioning by putting / and /boot on the SS SanDisk, which caused no problems during installation because /dev/sda doesn't get shifted.We then figured it was a good idea to put our OS files on something with failover capability. And that started us down this crappy "shifting drive letter" path.Can I control which drive letter the USB thumb drive gets assigned during the install process?If I could make it be /dev/sdc then I wouldn't be facing this problem.An alternate solution would be to know the cryptic GRUB2 commands that I can issue from the command prompt post-install, pre-reboot.But I'm wondering if that will ultimately work at all considering that GRUB2 couldn't see /dev/sdb at all.
I'm looking for a script that copies a random .jpg from a random folder in my ~/Pictures folder to my ~/temp folder with a standard filename. This file will then be displayed in Conky. I can fix the last part, but I cannot find a way to do the first part.
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