General :: NFS Client & Stopping Iptables Also Works
May 16, 2011
Client is running Oracle VM Server 2.2.1 (kernel 2.6.18-128.2.1.4.37.el5xen). Storage is a NetApp 3210 (NFS configured to use TCP). Iptables on client has udp and tcp ports 111, 2049 and the NFS server ports opened. Info retrieved using: rpcinfo -p NetApp When trying a manual mount.
[Code]....
stopping iptables also works (I can manually mount the share without using proto=tcp). Is the mounting process somehow trying to negotiate first using udp which the Netapp doesn't respond and hence it fails by timing out? Can I configure iptables such that I don't have to use the proto=tcp option? Or is there another configuration file I can tweak so that I don't have to use the proto=tcp option?
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May 17, 2011
Client is running Oracle VM Server 2.2.1 (kernel 2.6.18-128.2.1.4.37.el5xen). Storage is a NetApp 3210 (NFS configured to use TCP).
Iptables on client has udp and tcp ports 111, 2049 and the NFS server ports opened. Info retrieved using: rpcinfo -p NetApp
When trying a manual mount ...
But when using the proto=tcp option, it works ...
Stopping iptables also works (I can manually mount the share without using proto=tcp).
Is the mounting process somehow trying to negotiate first using udp which the Netapp doesn't respond and hence it fails by timing out?
Can I configure iptables such that I don't have to use the proto=tcp option? Or is there another configuration file I can tweak so that I don't have to use the proto=tcp option?
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Feb 2, 2010
Ubuntu 9.10 2.6.31-17-generic
ISC DHCPd version 3.1.2
The DHCP service starts fine on boot and with manual start then works fine for about 4-5 hours. After that it just stops on its own. I start the service up and everything works fine for about 4-5 more hours untul it stops again.
What do I need to do to ensure that the service will stay uo 24x7x365?
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Feb 3, 2011
Is there any Linux software that fetches emails from let's say 3-d party imap server (ex imap.gmail.com) and allows you to access it in nice format through web interface.
So - if I run my own LAMP server I could just type in my ip address and access emails/calendars.
I guess something like Outlook Web Access but free and for Linux?
Is that what Zimbra is?
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Jun 3, 2010
i set up a dmz to have a internet web server and ftp server, and ssh only from local network, so i wrote a iptables script to load during boot :
[Code]...
The problem is that everything works fine ( i have the same rules for other services such as samba, nfs, mysql on another server) BUT ftp there is no way to make it work. not even locally.when i try to connect, i log in, but while listing the directory i get MLSD ... and it hangs like this for a moment, then i get error message "connection time out" , "impossible to list directory". if i turn off the iptables script no problem,ftp works fine.. but why all services work and ftp no?
how do i have to modify the rules? what is strange also is that if i set as OUTPUT policy "accept", the server seems to be offline."host unknown" error message. I was thinking the rule INPUT is fine cause at least i can login, but the dir list is not going out, so gotta modify output rules. or state?
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Feb 8, 2011
Everything works except on Fedora port 110 cannot be opened no matter how hard we try, we run REH (Redhat Linux) on a colocated server, now we run Fedora in a cloud
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Jun 4, 2009
if I use the final flag, postfix loggs to /var/log/messages, not to /var/log/maillog.What I am doing wrong?regards ralfHere my config:
options {
sync (0);
time_reopen (10);
[code]....
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May 30, 2010
I have RHEL 4 U7 installed on 4 machines, with approximately same configuration. yesterday i was trying to set up public key authentication for ssh on them to be able to run some automated jobs but i had a problem with one particular machine: when used as an ssh client to access the other 3, it kept prompting for a password. the configuration worked on the other 3, they can be accessed from each other with no problem. they can also access machine 1 - the one that has the ssh client problem - too with public key authentication.
When i run ssh -vv on machine one i get the following output :
Code:
This is my machine 1's ssh_config file:
Code:
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May 16, 2011
Boot of a new minimal system hangs on "Stopping save kernel messages" or "stopping system v runlevel compatibility". I have ubuntu minimal iso x86_64 from usb stick created with unetbootin (don't have a cd drive on the machine in question), and after that I didsudo aptitude install gnome-terminal network-manager-gnome gdm geditsudo rebootnever got a system back. Annoyingly I can't boot into the recovery mode either, and it seems the keyboard is only semi-responsive (i.e. many dead keys when at the grub menu).qualms about reinstalling, but I've done this a few times and ended up at the same place every time.
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Sep 11, 2010
I am using dyndns to keep track of my smartphone's ip address. The idea is to be able to ssh into my home network, protected by an iptables firewall. If I use the command: # iptables -I INPUT 9 -s myname.dyndns.org -p tcp -m tcp --dport 22 -j ACCEPT it updates using the current ip address, but the next time I get an ip address update to my phone and update dyndns to properly provide nslookups, this is not being updated in iptables unless I restart my firewall. Is there a better way to do this?
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May 16, 2010
Tried to install aMSN using Sid package... can't do it because no TK8.5. Installed TK8.5 and aMSN, now I get another strange message ...
Error in startup script:
OK ...
Let's check out 'Empathy IM Client' , no longer any support for MSN because ...?
Tried to setup Mercury which needs Java. Go to run Mercury, no java!
Had to set up Pidgin so that I could go on msn!
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Jun 25, 2009
I have a Nis server on Suse 11 which is configured using Yast and nis clients on Suse and CentOs .All clients which is on the Suse Os is working fine. But on CentOs , users couldn't login using nis username.I have mounted home directory using nfs in fstab . I can switch to nis users homedirectory only when i am root. But nis users could'nt login on reboot.' ypcat passwd username ' is showing the output . No selinux is enabled in the client .Is there is any problem with Suse server to Centos Client in nis ??
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Jan 23, 2011
In December I finally filled up my root partition and broke Suse 11.1. I therefore resized my partitions and installed Suse 11.3 on /root. I didn't not touch my /home partition.
I notice that when I leave my machine and come back the screen has locked. I have tried to turn off the screensaver, but it hasn't worked. I have Googled, but unfortunately the screen shots don't look like what I have and the instructions to stop this do not seem to match what I am seeing on the screen.
Is there a way to do this via the command line?
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Sep 17, 2010
I am facing a strange problem witht my iptables as there are some firewall entries stored somewhere which is displaying the below firewall entries even after flushing the iptables & when I restart the iptables service then the firewall entries are again shown in my iptables as shown below,
[root@myhome ~]# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
[code]....
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Jan 26, 2009
So I've configured ldap on Centos5 64 bit and I can run "ldap search" and "gentent passwd" on the client/server and it shows my users info.
But I can't login via the cli or GUI.
I can login by doing;
su - username
at the client or server but I can't login by issuing;
login username
or at the GUI login screen.
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Jan 20, 2010
I have x11 forwarding enabled in /etc/ssh/sshd_config on a suse 11.2 32 bit box running kde I can open x apps on a windows machine using xming and putty just fine, but when I boot the same machine into suse 11.2 64 bit using kde and try using konsole I get: cannot connect to x server
The command I'm using to log in is: ssh -X -l username host I doubt the problem is with the server I'm logging into or it wouldn't work in windows, not really sure what to look for as I've never had a problem using x11 forwarding from a linux client before only windows ones
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Apr 12, 2010
I'm trying to stop all the services on port 80 by I'm not entirely sure how.Infact, I don't really know what's running on port 80... I tried throwing a netstat -a in a prompt but I don't see port numbers anywhere so I can't figure out which PID to kill.Any ideas on how I can figure out what's running on port 80, and stop it?
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Nov 26, 2010
I want to launch a gnome-terminal with a korn shell, and I want to specify in advance a command to execute, and then hand control back over to ksh. ex.
Code:
gnome-terminal --execute ksh -ic ls
I expect that to run ksh, do an 'ls' for example, and then give a prompt. I thought the -i switch (for interactive) meant that the shell would resume control, but this doesn't happen. The window just closes quicker than I can see what was output.
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May 11, 2010
I have report running through a Unix server. In this it takes out certain data of the database and sends it to each of the user's mailbox. But if some user replies or has set his out of office reply then this server keeps on sending h the same mail again and again. I need stop it.
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Jul 15, 2010
Possibly related to this previous question, I would like to be able to run a task for a specified amount of time, then stop/kill it, then start it again. Specifically, I run the Folding@Home application on my Linux workstation. Periodically, it will have trouble logging-in to the home server, and will sit idle for a long time, but not release memory/resources it has claimed (yes, I realize this is likely a bug in the tool, but I can't fix that currently). Typically just the act of killing and starting the tool will allow it to check-in again. So, I would like to be able to run something like:
run_for <time> ./fah6
Does such a tool exist, or should I write a wrapper than nukes the fah6 client after, say, a week and restart it?
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Sep 16, 2010
I have just installed Ubuntu 10.04 and it works fine. Next, I attempted to install Apache 2.2.16 server on the machine. I was able to get Apache installed but I cant't get it to start. The command I used to get it to start is "apachectl -k start" and got the response "command not found". Then I used the absolute path which is "/home/Administrator/Downloads/apache/bin/apachectl -k start" and got the response"httpd: could not reliably determine ther server's fully qualified domain name, using 127.0.1.1 for ServerName(13)Permission denied: make_sock: could not bind to address 0.0.0.0:80.no listening to sockets available, shutting down". Please advise me on what to do. My eyes hurt from looking at the screen for so long trying different options and reading almost all the apache install instructions that exists. Just ready to have it up and running.
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Apr 14, 2011
I'm working on a Soekris net4801 that is running an unknown distro of Linux. The kernel is 2.4.29, and iptables is v1.3.4.
I can't work out how to save the iptables. I searched the whole system for files/folders containing the name "iptables" and got 3 results:
/user/local/lib/iptables
/sbin/iptables
/lib/iptables
I've tried iptables save, iptables-save and iptables save active.
"iptables save" and "iptables save active" give me an invalid argument error. "iptables-save" isn't a valid command. "iptables --help" gives me a list of valid switches, none of which have to do with saving.
how I can save the iptables?
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Nov 26, 2010
I am unable to restore my iptables from iptables-save after upgrading Fedora. I cannot get iptables-restore to work, and I have resorted to entering rules manually using the GUI.
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Nov 3, 2010
I recently installed a new Ubuntu PC that runs iptables and PSAD. I had the same script on another Ubuntu PC, but when I copied the script onto the new PC, I got this error. I don't remember where I found the tutorial for this, all I know is that this is the script (Edited for my usage):
Code:
#!/bin/bash
# Script to check important ports on remote webserver
# Copyright (c) 2009 blogama.org
# This script is licensed under GNU GPL version 2.0 or above
[code]....
Safe.txt contains:
Code:
127.0.0.1
192.168.1.8
192.168.1.1
98.200.58.73
192.168.0.1
And the error message generated is:
Code:
root@NETWORK-SERVER:/var/ddosprotect# ./ipblock.sh
' not found.4.4: host/network `127.0.0.1
Try `iptables -h' or 'iptables --help' for more information.
' not found.4.4: host/network `192.168.1.8
[code]....
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Jul 17, 2010
IPtables creates an error during startup as well as when I try to restart it: Here's the output of:
[Code]....
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Apr 16, 2011
I am running Ubuntu server 10.10 and trying to setup iptables rules in /etc/if-up.d/iptables
Quote:
root@host# cat /etc/network/if-up.d/iptables
#!/bin/sh -e
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
Problem is that iptables doesn't get updated and I don't see them when iptables -L is executed after reboot.
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Apr 28, 2009
To expand: I'm trying to set up a box with l7-filter, and I need to patch and compile iptables 1.4.1.1 as part of the process. I ./configured it with the prefix= argument so it would install into /sbin instead of /usr/sbin, and I did a yum remove iptables before installing it so as not to get in the way of the original iptables, but I'm wondering if this is really necessary - it's kind of annoying, because removing the original iptables removes the init.d script, deregisters the service, etc. If I don't, is it possible that iptables 1.4.1.1 might get overwritten in a system update or something, or will yum see that I've got a custom/newer version in there and leave it be?
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Oct 11, 2010
whats the difference between restarting/stopping apache using 'service httpd restart/stop' and apachectl restart/stop. I know that using 'service httpd restart' is actually a script in /etc/init.d/httpd but what about apachectl?
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Jun 18, 2011
I am going to start studying IPTABLES for Linux Firewall. Can any one suggest me the best Book for IPTABLES contains everything of iptables.
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Jan 13, 2010
using ubuntu and the corporate edition of open dns? >Im curious to find out how the anti malware filtering works in open dns works.
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