I have a netbook running opensuse 11.2 I'm trying to make it run faster by disabling services, and I would like to kill off postfix as I don't ever use it (As far as i actually know) What harm could come from disabling postfix, if any?
View 3 Repliesalthough I've been a lurker for a long time and hope the wealth of experience on LinuxForums can help me solve an issue I've been pulling my hair out for the last week.I am undergoing PCI compliancy scans and have been able to solve all the issues indicated with the exception of one: SSL Server Supports Weak Encryption Vulnerabilityport over port 25. Now before I go over the list of solutions I've tried let me post my Postfix main.cf and master.cf:
Code: main.cf
queue_directory = /var/spool/postfix
command_directory = /usr/sbin
[code]....
although I've been a lurker for a long time and hope the wealth of experience on LinuxQuestions can help me solve an issue I've been pulling my hair out for the last week.I am undergoing PCI compliancy scans and have been able to solve all the issues indicated with the exception of one: SSL Server Supports Weak Encryption Vulnerabilityport over port 25. Now before I go over the list of solutions I've tried let me post my Postfix main.cf and master.cf:
Code:
main.cf
queue_directory = /var/spool/postfix
[code]....
I am pondering on what would be any implications in logging in via SSH as root?Surely SSH is safe or am I kidding myself and falling for the unwary ethic of logging into a remote Linux box as root?I discovered some open ports remotely on the linux box, and decided to login as root to edit a configuration file to shut off the ports, hence my questioning in whether logging in as root...another point, since SSH is 'supposedly secure', there should not be any implications or am I kidding myself!??? Would it be better to login as normal user then su from there?
Ok, to make things even more interesting, what if its a bog standard generic linux distribution with no suid programs etc, then what happens...take that out of the picture, and say, for editing a configuration file...hackers are not going to see that are they, otherwise by the sound of the answers, it is putting an impression that hackers can see the traffic the minute you login as root?! Otherwise why bother using SSH? I mean, surely, SSH was designed to replace telnet and thereby increase protection...as we all know back in the early 90's before the internet became publicly available, that there was indeed sysadmins dialing in to private networks or telnet'ting into a remote system as root....
I have Windows 7 working on my laptop. I have 20GB space unpartitioned. I want to install a flavor of Linux like Fedora or Ubuntu in that space, but I have heard that keeping a dual OS configuration sometimes results in losing data stored on the hard disk. I've also heard that it may sometimes cause unrecoverable problem because when Linux is loaded on hard disk it will take over the boot loader from Windows.
Is this correct? Moreover, I have 6 partitions in Windows, but if I use a Live CD for Ubuntu or Fedora to boot, then it is not showing some partitions -- sometimes it shows only 4 or 5 partitions. What might be the problem, and how to resolve it without formatting the whole hard disk and repartitioning it?
i just finish setting up my new file server with two hardisk(80gig for first hd for my filesystem and 2nd 250 gig for my data files) now iam wondering can i umount my second drive "live" and replace a new hardisk without shutingdown my computer? can i damage my hardisk? i know there is a hotswapble hardisk. but i my case i cant not afford a upgrade in my unit(clone pc only) but guy i try several time to change live hardisk without turning off my pc? i just umount the 2nd disk and insert a new disk and nothing happend wrong in my system?
View 14 Replies View RelatedHere is what i do: make clean make makefiles CCARGS='-DEF_CONFIG_DIR="/opt/product/postfix-2.6.5/etc"
-DEF_COMMAND_DIR="/opt/product/postfix-2.6.5"
-DEF_DAEMON_DIR="/opt/product/postfix-2.6.5/libexec"
-DEF_MAILQ_PATH="/opt/product/postfix-2.6.5/bin/mailq"
-DEF_DATA_DIR="/opt/product/postfix-2.6.5/lib"
-DEF_NEWALIAS_DIR="/opt/product/postfix-2.6.5/bin/newaliases"
[Code]...
make install then i got this error: postfix: fatal: chdir(/usr/libexec/postfix): No such file or directory make: *** [install] Error 1 I don't understand why it's checking the usr/libexec folder for the daemons although I've set the folder to /opt/product/postfix-2.6.5/libexec in the makefile. Here is also the cat of my makedefs.out:
[Code]....
I'm using Linux Kernel version 2.6.33 on a server with Intel Xeon X5570.
I assume that Intel's DCA is already enabled on my system, because I see
Code:
I would like to test the effects of with and without DCA. How can I disable DCA?
When I plug in a removable device, KDE automounts it, but I prefer to do this manually (also perhaps not liking the idea that any user could plug a device in and have it mounted). I've searched around and looked at KDE -> System Settings -> Removable Devices, and "Enable automatic mounting of removable devices" is already unchecked
View 3 Replies View RelatedI'm currently using Debian 5.04 Lenny, and I trying to figure out how I stop things running at boot time, in the simplest way, if possible.
In Redhat/SuSE all I had to do was 'chkconfig xxx off' and it was done, is there an equivalent in Debian? A tool or something.
To find a list of items in Redhat/SuSE all I had to do was 'chkconfig --list' and it displayed a list, is there also an equivalent for this? A tool or something.
I want my keyboard to be disabled for sometime say 5min or more. My keyboard gets loaded more than fingers it bears sometimes loads of books.So want to disable for a specific time
View 1 Replies View RelatedHow can I disable the PK,UK and FK constraints on all tables in oracle DB.
View 2 Replies View RelatedMy workstation has a built-in speaker that, surprisingly, plays audio very well. I also have external speakers hooked up to the audio out jack which are easier to hear. Unfortunately, when I try to play some audio material, sound comes out of both the external speakers and the built-in speaker on the workstation.
I'd like to disable the speaker inside the machine, and just plug in head-phones to the external speaker so I can listen to training material at work without bothering my office mate. I'm not sure how to do this in Linux (Suse Enterprise Desktop 11). Fiddling around with the Gnome audio tools doesn't list two different audio devices on the machine.
From what I can tell, sound is played through the ALSA system. I looked in my home directory and there is no .asoundrc controlling configuration.
I should also add that I check in the BIOS for a way to disable the built-in speaker, but I could not find such a setting.
My Acer notebook has a button that can disable the wireless network device when pressed. Since it is near the ESC key, sometimes I press it on accident, especially when editing something with Vim. When I press the wireless switch to enable the device again, nothing happens. Using the command ifconfig wlan0 up results in the following error:
SIOCSIFFLAGS: Unknown error 132
Rebooting and logging on linux again didn't solve anything. I had to log into windows. The device started out disabled, then pressing the button reenabled the device. I'd like to be able either to reenable wireless at will, or outright disable the wireless switch button.
This is the Linux version of my Disabling mouse acceleration in Mac OS X question. Hopefully I'll get an answer this time.I am tired of mouse acceleration and want to have a completely linear mouse response. This is easily achievable through any of the 5 or so methods (some subtly implied) on the X.Org wiki page on pointer acceleration. However, they also disable velocity scaling.I don't want a 1:1 mapping between device and screen coordinates. I want a 1:N mapping where N is a constant.
View 1 Replies View RelatedI tried following the instructions in this link to disable and remove iptables firewall using commands:
# service iptables save
# service iptables stop
# chkconfig iptables off
# iptables -F
# iptables -X
# iptables -t nat -F
# iptables -t nat -X
# iptables -t mangle -F
# iptables -t mangle -X
# iptables -P INPUT ACCEPT
# iptables -P OUTPUT ACCEPT
Its seems to work temporarily and then the firewall gets enabled again by itself even without restarting.
How can I disable the interactive boot up process? Also what is the pros and cons to doing this? Will this affect my being able to get to runlevel 1?
I have been googling it but not really clear on the pros/cons etc.
I am talking about a server class machine that is in a locked room, not a desktop.
I know it can be turned off in /etc/sysconfig/init # Set to anything other than 'no' to allow hotkey interactive startup... PROMPT=yes
Kernel 2.6.21.5, slackware 12.0
(Mozilla) Firefox 2.0.0.4
where the option to disable spelling checking is in FF? I think Edit>Preferences contains all of the settable options.
i want to run a jar file at the start up..and only that application will work at the start up..other all are blocked..after giving input to the application the xwindow will enabled..otherwise it remains same.
View 1 Replies View RelatedWe are having 12 windows computers xp which are connected to a linux machine which has samba server installed on it for backup purposes of these 12 windows users. We want the like this , that a user copy a folder from their local machine and paste it to the samba server . but they cannot delete this folder once the backup is there at linux machine.
So this is working fine. But our users are able to Rename the folder they have pasted at linux machine which we dont want . and even they are able to cut and paste files from 1 folder to another folder in the samba server. We just want them to copy a file or folder from their local windows machine and paste to samba server and they can also read it (copy and paste back to their windows computer)whenever they want . but we dont want them to cut and paste within linux machine and rename that file as well.
I've had a hell of a time with this and now all but YAST2 are ok. Going back some time to 10.0 this could be used to disable it very completely.
open terminal and run
echo "alias net-pf-10 off" >> /etc/modprobe.conf
echo "alias ipv6 off" >> /etc/modprobe.conf
restart computer. Has anyone used this on more recent issues even 11.4 and are there any repercussions?I assume that the inverse will but it back on ie off's just become on's? I will be using cups when I install my printer which is one concern and I am not at all sure that modprobe will do anything anymore?
I also recollect that there is a command to cause the kernel to effectively reboot which would save restarting. Can't remember what it is. Maybe some one can refresh my memory.
I have a src package which uses automake for make. How can I view the available options in configure command for enabling and disabling options?
View 4 Replies View RelatedI know that I can use the GUI (gnome-volume-properties) enable/disable the USB sticks/disks automount features, by checking/unchecking the pertinent options.My question is: how can I obtain the same results from the command line (that is, without using any GUI frontend)?
View 5 Replies View RelatedI bought a ssd drive for my laptop, installed it, installed Windows 7, installed Kubuntu 11.04. Till then everything worked fine, and I had following partitions on my disc:
Code:
/dev/sda1 ntfs ~100MB win boot,
/dev/sda2 ntfs ~170GB win main,
/dev/sda3 extended
[code]....
It worked fine. While using 11.04 I encountered a serious bug in nvidia 270.41.06, and decided to switch to Kubuntu 10.10. I installed 10.10 on the very same /dev/sda5 (clicking a checkbox to format it). Everything worked fine, grub was installed and pointing to win7, and kubuntu 10.10. I disabled ext4 journaling as above, rebooted, and found, that grub now points to win7 and 11.04, and that system (which should have been removed during installation of 10.10) loads perfectly fine. I checked where 11.04 had been installed - still /dev/sda5. Win7 loads fine as well, so no linux on /dev/sda2 I checked if there was 10.10 kernel in /boot - no. File system on sda5 had no trace of 10.10.
I formatted sda5 with gparted, installed 10.10 again, disabled journaling and situation repeated, whole file system on sda5 changed. Enabling journaling did nothing, 10.10 didn't come back. I deleted sda3, sda5, sda6, made them again, installed 10.10, disabled journaling, and finally had my 10.10 on ext4 without journaling. So this is kind of solved, but I would still like to know that the hell happend? For the moment it looked like two file systems coexistened on one partition.
Trying to figure out why the following two are treated differently...
Code:
*.warn;
kern.!=debug;auth.none;
authpriv.none;cron.none;mail.none;news.none -/var/log/syslog
and
[Code]....
According to man syslog.conf "You can specify multiple facilities with the same priority pattern in one statement using the comma (``,'') operator. You may specify as much facilities as you want. Remember that only the facility part from such a statement is taken, a priority part would be skipped."
Can someone confirm that this statement means that kern.!=debug is ignored in the first part because it's priority is not the same as the trailing facilities ending in .none?
is there any HOWTO for configuring Webmin Postfix server with multiple postfix virtual hosts? Seems to be a tough challenge to set it up without any easy manual..
View 1 Replies View Relatedso i set out to change the default smtp port the server uses because my ISP blocks port 25 and i need the email to work in outlook. this morning i could receive email, but not send it. so i did some research and thought that i needed to edit the master.cf file in /etc/postfix/ by commenting out this line: smtp inet n - n - - smtpd -oand replace it with587 inet n - n - - smtpd (587 being the port i want to use)somewhere along the lines postfix server stopped running and now i cannot get it to start.if i try using SSH it crashes immediately and if i restart it in simple control panel nothing happens
View 7 Replies View RelatedI recently moved over user from an old box running postfix(v 2.0.16) over to rhel 6 running postfix (v mail_version = 2.6.6). ive tried to make sure all the files are of correct permissions and that the main.cf file is configured corectly. However there is something wrong as when i run postfix: service postfix server i get no error but when checking the status:service postfix status i get: master dead but pid file exists Looking into /var/log/mailog i find this line being the issue:
Feb 25 16:24:39 puny1 postfix/master[3517]: fatal: fifo_listen: create fifo public/pickup: Permission denied
I gather this is a file permission issue and ive tried to make sure the public folder in /var/spool/postfix is correctly set but still no avail.
I was trying to write a graph plotting program with c++. I need to convert the infix expression from user to postfix expression for quick evaluation. However, the evaluation of postfix is kind of interpreted, and thus kind of slow for evaluating huge number of values. Say if I plot an implicit function the penalty is quite huge. Is there a way that I can compile the infix expression from my running graph plotting application for high speed evaluation.
View 6 Replies View RelatedI have isntalled a server with Centos 5.2 OS, now I would like to switch from the default sendmail to postfix doing a yum install postfix I've noticed there is already available an rpm version for the OS but I would like to compile my own 2.5 version, I've noticed compiling from source does not allow me to use the mail switcher to tell to the system I'm gonna use Postfix instead of Sendmail as the default MTA while this is possible when I use the "official" rpm version of the package. Now my question is this, would this be a problem? There is some specific procedure/best practice I should follow? Or once compiled and configured Postfix I can safely disable/uninstall sendmail?
View 6 Replies View Related