General :: Fedora 10 Stops Allowing Connections?
Jun 3, 2010
I have Fedora 10 set up as a server. Occasionally it will stop allowing connections, such as ssh, http, and samba. This continues until someone hits a key on the keyboard, and then it seems to come back to life and accept connections. At this point, the date and time will be wrong. Judging from monit messages that inform me when it stops allowing connections, I think the time freezes at whatever time it is when it stops allowing said connections.
Power Management has it set for the computer to never turn off. Sleep mode is also disabled in the BIOS.
I thought it was possibly the CMOS battery, but that has been replaced and the issue persists.
Someone previously thought it might have been Network Manager, but that is disabled due to issues it has with a static IP.
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Aug 26, 2010
Do any programs need to be installed that aren't included in the default install of Linux Mint in order for it to allow VNC connections?
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Jan 9, 2010
I want to set up my laptop to allow connections to certain users with passwords from anywhere over the internet via SSH but I'm unsure about how I would go about doing this. I only thought it would be the case of setting up the open-ssh server on the laptop then, using my external IP and PuTTY on another PC outside of the network, connect to the external IP through port 22 so I tried this and wait 3 or 4 minutes or so and it says the connection times out.
I have also configured my router to use port forwarding but this doesn't seem to help much either and I have LAMP setup to allow connections to external IP : 80. The only thing I am able to do is access the laptop through the local network by using its internal IP's like 127.198.0.1:22 or something. I was wondering if anybody knows if and could tell me how I would do this as I really want to be able to access my home computer/laptop from my work sometimes, especially if I have work at home which is not with me at work or something.
I know this is possible but I'm quite new to this type of thing and don't know what is going wrong. Have I missed something or do I need to change any .conf files or anything?
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Jul 19, 2011
I'm trying to get VNC working but I'm getting this error message:
Quote:
ssh: connect to host my_ip_address port 22: Connection refused
When typing:
Quote:
ssh -f -L 5900:localhost:5900 user@my_ip_address x11vnc -safer -localhost -nopw -once -display :0 && sleep 5 && vncviewer localhost:0
I'm trying to follow the instructions here: [URL] but I'm struggling with point 2 & 3:
Quote:
2. If you have previously reconfigured the firewall on your PC, make sure the firewall allows incoming connections on port 22 from anywhere, and on port 5900 from localhost (also known as 127.0.0.1)
3. If your PC is behind a home router, or any other device that uses NAT, configure your router to send connection attempts on port 22 (but not port 5900) to your PC
So my questions are:
1. I installed a fresh version of Ubuntu 11.4, should I be concerned about step 2? If so, how can I allow incoming connections on port 22 from anywhere, and on port 5900 from localhost?
2. Regarding step 3, I'm using NETGEAR model DGN1000 router. Is that something that I should do from the router's setting page or it's some commands that I should pass through SSH?
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May 11, 2010
Howcome mysql by default is only allowing connections from localhost? I want to access it remotely from another account (not root).
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Apr 24, 2011
I'm not sure if this belongs in the Server or Networking section of the forums. Anyway, last month I upgraded my server to Ubuntu 10.04 LTS. Since then, I've had a recurring problem wherein after a certain period of time, the server stops accepting network connections. Ubuntu 10 will continue to reject network connections until someone logs into the server locally, after which time network connectivity is restored and the cycle begins anew. Essentially, the server goes into a "half sleep mode". I say half because the computer is still on and the fans are running.
I've done some searching around various forms and initially figured this issue was related to problems with the Network Manager service (https://bugs.launchpad.net/ubuntu/lu...er/+bug/524454), so I removed the service altogether. However, this problem is still occurring.
I've poured over /var/log/messages and /var/log/syslog, but have noticed no irregular behavior. Has anyone else experienced this issues? I'd rather not resort to downgrading back to Gusty Gibbon if I can help it.
I am happy to provide more information if its needed
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Oct 2, 2010
I recently setup a new SUSE box for the purposes of acting as an ftp/sftp server. It's currently setup to run ProFTPD 1.3.3.rc3 and mod_sftp/0.9.7. The server has two internal network interfaces eth0 and eth1. eth0 is purely for internal use to accept ftp and ssh. eth1 is outward facing and receives connections from the WAN via SFTP over port 22. The problem I am facing is that after half hour to an hour eth1 stops accepting connections whenever there is no SSH connection present on eth0. I can't figure out why this is happening.
ProFTPD is setup as follows: SocketBindTight directive is on, default server and port are commented out.
[code]...
When the external interface is unreachable the proftpd and proftpd-sftp logs show no record of any connection attempt. I have noticed however if I leave eth0 down eth1 stays contactable without problem. Can anyone give me some pointers on what I can check to find out why this may be happening.
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May 30, 2011
I recently installed Fedora 15 now, and during installation I set the internet connection manually, then did update and after reboot, the internet connection settings have been removed. Now I can not set because the network connection to the Internet Connection is inactive. I mention that before the update was functional internet connection.
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Feb 7, 2011
have a problem with my network-manager in ubuntu 10.10.when I dial one of my vpn connections, my other vpn connections be disabled and I can't use them!I tried to restart network-manager and gnome-panel, but it does't seem to solve this problem.
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Dec 8, 2009
i've got a few questions about iptables. i know how to set up ip tables to only allow from an ip address or a subnetting ip addresses. question is how do i allow from 2 different networks? would i need to create 2 lines of entry in iptables to the same port? e: allow 10.168.1.1 and 196.168.1.1 on port 22 is there a way to put all that in 1 line or would i need to create to rules for the port? i know i can use the ssh allow or deny but i'd like to stop access even before it gets to the ssh. stop it at the source kinda thing.
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May 27, 2010
I'm using the Java Service Wrapper to create a service in Linux. This Java Application has no main GUI, but if certain error message occur then it displays a warning box allowing the user to know. If I log into root and install the application everything works fine. But, if I log into a none root user graphically and then do a su - to get to root the service will not start. This is the command I'm using inside the service (/etc/init.d/rc.d/backup) to start the application
Code:
export DISPLAY=:0.0
/home/pulse/backups/bin/backup start -Djava.awt.headless=true
If I take out the "export DISPLAY=:0.0" the service will start fine, but when an error occurs the warning box doesn't pop up.
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Jul 15, 2010
I want to ask about securing the FTP connection... I have one server that Installed with Redhat Linux Fedora 6.
And now, i want to securing the FTP access, so only the selected IP will be allowed to connect. Do anyone know how to do this?
Another thing is, my server using Webmin 1.3 to manage the server and there not installed / not configured yet with Frox FTP, ProFTPD Server, WU-FTP Server... even there is such thing in my Webmin...
Can i make use one of the three FTP i mention above, and if yes, will it be affecting the current FTP access?
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Oct 25, 2010
How would like to allow a user to run command such as mount fdisk and lspci which normally you would have to be root to do. How would i go about doing this.
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Jun 7, 2010
I have been using Windows Vista since I bought my laptop. Due to the need to use another operating system, I decided to go for Fedora. I read a some installation guides and was told that dual-booting will allow me use both OS without problems.Last night, I created three partitions on the hard disk, one of them is the primary partition for my Vista OS. Then I went ahead to install Fedora on one of the other partitions. The Fedora worked fine. Subsequently, I wanted to check some stuffs using Vista, but the computer showed my some prompt that said that my BOOTMGR is missing. However, Fedora still boots and works perfectly.Please what should do? I didn't back up my documents before installing the Fedora. How do I go back to Vista without formatting my hard disk.
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Oct 26, 2010
I used the rpmfusion nvidia drivers for my Fedora installation up until a day ago when all of sudden my display turned black after an update. Also, I am using a sony laptop with Nvidia GT230M (with proprietary drivers there are some huge problems like not detecting display, i had to use custom edid file to get it working).After fresh install, things just worked and everything is fine. But the only problem is it is not letting me enable Desktop Effects. I am very much used to Scale to switch my windows and I am kinda missing that functionality. This brings to my question, which driver is being used with my installation now?
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May 23, 2011
I have recently installed virtual box on fc14 using add /remove software . However so far i have not been able to install any OS on that. I put the OS CD the cdrom and click on start virtual machine..it gives following errors ..
I have followed the instructions given there but all in vain...
Code:
[root@Fedora Raman]# /etc/sysconfig/modules/VirtualBox-OSE.modules
ERROR: modinfo: could not find module vboxdrv
ERROR: modinfo: could not find module vboxnetflt
ERROR: modinfo: could not find module vboxnetadp
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Jul 13, 2011
Whether it is vi or gvim, you can view the current non-default settings by writing ":set" and pressing <ENTER>. However, in FC15, vim clears the settings screen really quickly, not allowing me enough time to catch it. Normally it should pause at the settings screen, and clear it only when I press any key. If others see the same problem, I will file a bug.
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Jan 30, 2011
I upgraded my Fedora Core distribution from 12 to 14. Everything worked fine, except for SQUID which refused to upgrade. I then went to rescue and installed SQUID using yum and then restarted the upgrade. It did finally upgrade the system and then asked for a reboot. Well, when I selected the new kernel option in the GRUB options, since I also have Winduhs, it gave a kernel panic. I tried booting into the older kernel and it worked. Now I see the users that are there in the system in the Graphical GUI login greeter screen. But none of the users get authenticated. I used the rescue option and removed graphical login and changed boot level to 3. I also enabled the root user. In the rescue mode, if I do a startx, everything works fine.
I logged off rebooted the system. When I login, I see the version is shown as Fedora Core 14, but the kernel was still the older one with Core 12. I again went to rescue and checked out GRUB and saw that it had no initrd for the new kernel. I created a initrd image with the mkinitrd command and then added it to grub. I again rebooted. This time it shows the correct kernel, but still the system does not allow any of the users to login. All the Logins fail. I have tried going to rescue and going to the system using 'chroot /mnt/sysimage' and doing a startx for Graphical. Everything works, but only with the Rescue mode in the DVD. The normal boot/login sequence does not work.
Incidentally when I do a 'yum distro-sync', I get something like this :
---> Package dialog.i686 0:1.1-9.20080819.fc12 set to be downgraded
---> Package dialog.i686 0:1.1-11.20100428.fc14 set to be erased
---> Package diffstat.i686 0:1.51-1.fc12 set to be downgraded
---> Package diffstat.i686 0:1.51-2.fc14 set to be erased
---> Package diffutils.i686 0:2.8.1-25.fc12 set to be downgraded
---> Package diffutils.i686 0:2.8.1-29.fc14 set to be erased
It still seems to believe its a Fedora Core 12 system. Another information is that when I leave rescue mode and do a normal boot without installation media, it starts doing some SELinux relabelling and reboots. Any pointers on how I can get the system working. I am able to work with the rescue mode way, with any user, as it does not ask for any password. I can even do startx and work on the GUI. All my data is also there. I just am unable to get the user authenticated using normal boot/login. I have tried using passwd -d username, but it gives an error :
passwd: libuser initialization error: could not open configuration file `/tmp/libuser.ElY0r9': No such file or directory
In fact, I am now in rescue mode only when I am writing and sending this.
My GRUB file is :
default=4
timeout=25
splashimage=(hd0,9)/boot/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.35.6-45.fc14.i686) with Initrd
root (hd0,9)
kernel /boot/vmlinuz-2.6.35.6-45.fc14.i686 ro root=UUID=c91b69c3-0d89-4242-99db-6e0cc04ce3de LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet
initrd /boot/initramfs-2.6.35.6-45.fc14.i686.img
title Fedora (2.6.35.6-45.fc14.i686)
root (hd0,9)
kernel /boot/vmlinuz-2.6.35.6-45.fc14.i686 ro root=UUID=c91b69c3-0d89-4242-99db-6e0cc04ce3de LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet
title Fedora (2.6.32.21-168.fc12.i686.PAE)
root (hd0,9)
kernel /boot/vmlinuz-2.6.32.21-168.fc12.i686.PAE ro root=UUID=c91b69c3-0d89-4242-99db-6e0cc04ce3de LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet
initrd /boot/initramfs-2.6.32.21-168.fc12.i686.PAE.img
--- snip
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May 14, 2011
I have a drive NTFS formatted drive mounted in Debian and a script set to make directories via a linux script and cron job. This was running flawlessly till recently, when I started getting 'mkdir: cannot create directory 'dirname': Operation not supported'.I have been unable to find any help with this issue online. I assume it is a NTFS mount issue. I know it isn't about file size, as the drive it 1TB.Here is my fstab for reference:Code:/dev/sdb1 /mnt/backupLocation ntfs-3g rw 0 0Do you know what the issue is here? Like I said, up until recently I have been able to create seeming unlimited directories here, but it now stops after about 7 - 10 directories have been created?
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Feb 6, 2009
What is the best method to upgrade Fedora from 8/9 to 10? I have the DVD, and whenever I try to boot from the DVD it locks up the PC after selecting the default language stuff. I've run the media check on the DVD, and it passes with no problems. I am behind a firewall and for some reason the configuration is not allowing YUM to get through the firewall, but Firefox can get through (I have another post for this issue).
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Aug 8, 2011
I m able to do the changes in the home directory of the users' but when it comes to the /var/www/html folder, it's not allowing to do any changes/create the files or folders
I m able to view the files and it's contents
Global Settings:
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Jun 14, 2010
Is it possible to have more than one password simultaneously attached to a login account in Linux?I'd like to be able to add a temporarily-authorized user to an account on my web server, but don't want to have to change the login afterwards.Even cooler would be if this could be done with a timer of some kind so the temporary password would auto-die after, say, 24 hours.
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Nov 29, 2010
In order for me to get started with Linux, I downloaded & installed Virtualbox (V3.2.10) on my WinXP machine, and downloaded the Puppy Linux image from as per[URL].. When I start up the VM, I get a GRUB menu allowing me to boot
Quote:
Linux (on /dev/hda1)
Install GRUB to floppy disk (on /dev/fd0)
Install GRUB to Linux partition (on /dev/hda1)
I tried the first option, which results in Quote:
Booting 'Linux (on /dev/hda1)'
root (hd0, 0)
Filesystem type is ext2fs, partition type 0x83
kernel /boot/vmlinuz root=/dev/hda1 ro vga=normal
[Code]...
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Jun 1, 2011
Each day I need to copy N files from a source location to a mirror at a specific time (where N is very large). Let's say I tell multiple CPUs to each run an rsync simultaneously on a subset of the files (network and disk bandwidth are not an issue). Ideally each CPU would be responsible for a disjoint subset of the N files, but in practice this is sometimes hard to guarantee. (Some of the source files might be "claimed" by more than one CPU.) As a result, sometimes rsync I and rsync J will both try to copy file F at the same time.
Using rsync -avz --delete --temp-dir=/tmp remote:/path/to/source/ /path/to/dest/, let's say rsyncs I and J both see this situation to start:
[Code]...
Now rsync J finishes copying but generates an error when it tries to move its version of FileB to /path/to/dest/ because there's already another FileB there that it didn't see when it started.
Does one of rsync's many options somehow handle this situation? Ideally I'd like an option that tells rsync, "Believe in yourself. You can do no wrong. Feel free to overwrite anything your little heart desires." so that it wouldn't complain about the FileB that has suddenly appeared mid-execution
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Mar 10, 2011
I've been struggling with what should be an easy change on our Squid proxy.Basically I'm attempting to allow the ranges:
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209.197.0.0/19
Address: 209.197.0.0
[code]....
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Aug 9, 2009
I'm dual booting Mac and Fedora 11. My music is on the mac side, and is too large to copy to the Fedora partition. What is the best option for sharing between the two partitions.
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What's the best way to do this without allowing complete access?
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Mar 14, 2010
I've hit a wall here; I'm attempting to find some way by which to view files and cd into directories on a device mounted read-only. So I need the permissions to read, write, execute (and the same with directories), but chmodding is out of the question because I don't want to alter the drive one iota.
I guess what I could do--what I was thinking of initially--was to dupe the whole drive and then mess with permissions. This wouldn't affect the original (actually I'm working on a duplicate of the original, but I'm treating it as if it were the original) but I was hoping for something that would maintain data integrity. This is a forensic application and not altering the data is very important.
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Mar 18, 2010
I need to allow non-root users to read/write on an ext3 partition.
Below is the relevant output from fdisk -l
Code:
The partition in question is /dev/sda4 and it is mounted as /Data (setup during installation).
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Jan 21, 2011
Is it fair to say that connLimit and hashlimit are very similiar on Linux i.e. while hashlimit caters to limits for groups of ports, they both set the connection rate limit per host? How in IPTables, do I configure a policy that limits connections on a port that encapsulates the total sum of all connections from all hosts? i.e. I do not want to allow more than 6000conn/minute for port range that is the sum of all connecting hosts?
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Jan 1, 2011
With Azureus/Vuze, can we set an upload/download rate limit depending on the time of day?
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