[CentOS] Control panel for email backup

[Chandran Manikandan]

Dear Friends,

I have install and configure qmailtoaster on my production server.
I want to take email backup for all the email accounts and emails.
Some ISP provide one click increamental Email backup and restore through
their control panel.
And they are providing .pst file format download option for the email
account backup.
Could anyone using this feature on centos 6.6 server.
Anyone have an idea above this.
Kindly help me to how to do my server.
What is that software and how to install and configure on my server.

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Re: [CentOS] FirewallD issue

[Chandran Manikandan]

Hi Marcin,
Please check your openvpn config file of Port number then check your
firewalld config on the same port allowed or not.

On Fri, Apr 22, 2016 at 6:28 AM, Marcin Trendota 
wrote:

> On Thursday 21 of April 2016 2:37:49 PM Gordon Messmer wrote:
> > On 04/21/2016 01:33 PM, Marcin Trendota wrote:
> > > It's OpenVPN on chamber.
> > What port is it using?  I don't see the standard port listed in your
> > firewalld rules in either zone.
>
> 1194/udp. I added service openvpn and port 1194/udp (just to be sure) to
> both zones - no change.
>
> [root@chamber openvpn]# firewall-cmd --list-all
> home (default, active)
>   interfaces: enp3s0 tun0 vbr0 virbr0 vnet0 vnet1
>   sources:
>   services: dhcp dhcpv6-client dns http https imaps ipp-client mdns nfs
> openvpn samba samba-client vnc-server
>   ports: 143/tcp 2/tcp 1194/udp
>   masquerade: no
>   forward-ports:
>   icmp-blocks:
>   rich rules:
>
> [root@chamber openvpn]# firewall-cmd --list-all --zone=external
> external (active)
>   interfaces: enp1s0
>   sources:
>   services: openvpn
>   ports: 2/tcp 1194/udp
>   masquerade: yes
>   forward-ports:
>   icmp-blocks:
>   rich rules:
>
> > Also, you probably should specify tun+ instead of tun0, even if you
> > think there will only be one tunnel up at any given time.
>
> Specify where?
>
> Despite the fact than i can't scan their ports, i'm able to ping those
> hosts.
>
> Maybe it's not firewalld related? I can scan ports from chamber (home
> router). I'll try tcpdump maybe, to see what is going on with packets?
>
> --
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Re: [CentOS] Suddenly increased my hard disk

[Chandran Manikandan]

Dear Friends,

Finally fixed my issue.
As you told i have unmount the external hard disk then i checked the
/bkhdd/backup folder.
I saw that 190GB backup tar.gz file then i deleted and again remount it.

Thanks a lot for your kind supporting to me to fix this issue.

Why it's happened like this environment and how to avoid it.


On Tue, Apr 19, 2016 at 10:16 AM, Gordon Messmer 
wrote:

> On Mon, Apr 18, 2016 at 6:23 PM, Robert Nichols
>  wrote:
> > lsof will show the sizes of the deleted files.
> >
> >  lsof | grep deleted | sort -k7n
>
> That's a reasonable G.D. answer.
>
> The only problem is that on my system, the default output includes a
> TID column that is present in only some of the lines, so the size
> column is 8 for many lines and 7 for the others, so sort doesn't work
> as expected unless you change lsof's output.
>
> And you probably should "grep ' (deleted)$' unless you want to see
> files like
> /home/gordon/.thunderbird/xxx.default/calendar-data/deleted.sqlite.
>
> Still, I guess I learned one thing.
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Re: [CentOS] Suddenly increased my hard disk

[Chandran Manikandan]

Hi Geleem,
Please have a look below of my result.

For my system shows like below.
df -h

Filesystem  Size  Used Avail Use% Mounted on
/dev/sda2   909G  576G  287G  67% /
tmpfs   3.9G 0  3.9G   0% /dev/shm
/dev/sda1   3.9G  160M  3.5G   5% /boot
/dev/sdb1   916G  382G  488G  44% /bkhdd

First hard disk /dev/sda
Second hard disk /dev/sdb

The problem is in first hard disk show above size but my email box folders
having below result.

du -hs /*
8.0K/backup
7.5M/bin
*382G/bkhdd*
89M /boot
4.0K/cgroup
4.0K/command
208K/dev
79M /etc
*386G/home*
4.0K/isoqlog.domains
322M/lib
20K /lost+found
4.0K/media
0   /misc
4.0K/mnt
0   /net
64M /root
14M /sbin
4.0K/selinux
4.0K/service
4.0K/srv
680K/tmp
4.3G/usr
1.9G/var

Here

/bkhdd is mount in /dev/sdb

/ is mount in /dev/sda

But the size is not match in /dev/sda

I am running Centos 6.5 32 bit with CLI Mode.
How do i check the cache size in this mode.

On Mon, Apr 18, 2016 at 2:29 PM, g <gel...@bellsouth.net> wrote:

>
>
> On 04/06/16 22:44, Chandran Manikandan wrote:
> > Hi All,
> >
> > I have running Centos 6.5 32 bit machine.
> > This machine is running qmailtoaster packages and mailbox size is 385 GB.
> >
> > if i run the df -h command it show 385 GB out of 1TB
> >
> ===>
> please post results.
>
> > I have run the same command today suddenly shows 576 GB out of 1 TB.
> >
> > I didn't update any bulk file and mail transaction is not very high.
> >
> > How do i check this issue and fix it.
> >
> ===>
> why do you believe that increase is related to gmailtoaster?
>
> > how do i find out and why suddenly showing this much of increasing the
> size
> > of hard disk.
> >
> ===>
>
> > Could anyone help me
> >
> ===>
> have you at any time run kde?
>
> ria, i use kde and some time back, found that depending on how a file
> or directory is deleted, deletion is saved in cache.
>
> is it possible that  gnome is doing same?
>
>
> --
> peace out.
>
> If Bill Gates got a dime for every time Windows crashes...
>  ...oh, wait. He does. THAT explains it!
> -+-
> in a world with out fences, who needs gates.
>
> CentOS GNU/Linux 6.7
>
> tc,hago.
>
> g
> .
>
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Re: [CentOS] Suddenly increased my hard disk

[Chandran Manikandan]

Hi Tony and Gordon,
Thanks for your help.
I have tried above your commands
I couldn't see that size of the file.

Usually the qmailbackup created like below format in backup location.

201604151929-backup.tar.gz
201604151929-qmailadminpasswd.tar.bz2
201604151929-qmailcontrolusers.tar.bz2
201604151929-spamassassin-files.tar.bz2
201604151929-squirrelmail-plugins.tar.bz2
201604151929-squirrelmail-prefs.tar.bz2
201604151929-vpopmail.sql.gz
201604151929-vpopmail.tar.bz2

Then i have tried to delete rm -f *.bz2 files or *.gz files.

The above same steps followed on 01 April files.

After that it doesn't show the 201604011929-backup.tar.gz file in backup
location.
but the extra 194 GB size occupied in my server which is above mentioned
backup file size.

I had checked mailbox folder size 386 GB and there is no other big size
folder and files in my server.
But i am wonder why it shows  580GB occupied in my hard disk.

how to find out and solve this issue.
I have run fail2ban and firewall also in my server.
i have doubt anybody hacked or accessed my system from outside.
Could anyone help me.





On Fri, Apr 8, 2016 at 12:45 AM, Gordon Messmer <gordon.mess...@gmail.com>
wrote:

> On 04/06/2016 10:08 PM, Chandran Manikandan wrote:
>
>> qmailtoaster backup file which was around 184 GB in backup.gz type and i
>> have removed .bz2 type file with the same backup/mailbkup directory.
>>
>> After removed .bz2 file it's gone backup.gz also which was 184 GB file.
>> I have run this command locate .gz but couldn't find out it.
>>
>> how do i see the open files.
>>
>
> You're most of the way there.  You've probably identified the culprit.
> The backup file consumed your space, and some process still has it open so
> that it's not being freed on the filesystem.
>
> As root, look for deleted files:
>
> # ls -l /proc/*/fd/* | grep '(deleted)'
>
> For instance, among the output on my system, I see this:
>
> l-wx--. 1 gmessmer gmessmer 64 Apr  7 09:41 /proc/28087/fd/1 ->
> /home/gmessmer/tmp.1 (deleted)
>
> The file /proc/28087/fd/1 appears as a symlink to a deleted file. In that
> case, the process with PID 28087 has the file open.  I can use "ps" to
> determine what the process is, and terminate it appropriately.
>
>
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Re: [CentOS] Suddenly increased my hard disk

[Chandran Manikandan]

Hi John,
/home is not mount. It's under the / root directory. sorry i had mention
wrongly.
/ is mount in /dev/sda

On Thu, Apr 7, 2016 at 4:56 PM, Anthony K  wrote:

> On 07/04/16 14:48, John R Pierce wrote:
>
>>
>> if you are running X-Windows, there's a nifty utility KDirStat that scans
>> the disk tallying space, then gives you an interactive graphical view of
>> usage.   I believe you can install it from epel as package k4dirsta
>>
>
> And the equivalent of that at the cli is ncdu - also from EPEL.
>
>
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Re: [CentOS] Suddenly increased my hard disk

[Chandran Manikandan]

Hi John,
Thank you.

For my system shows like below.
df -h

Filesystem  Size  Used Avail Use% Mounted on
/dev/sda2   909G  576G  287G  67% /
tmpfs   3.9G 0  3.9G   0% /dev/shm
/dev/sda1   3.9G  160M  3.5G   5% /boot
/dev/sdb1   916G  382G  488G  44% /bkhdd

First hard disk /dev/sda
Second hard disk /dev/sdb

The problem is in first hard disk show above size but my email box folders
having below result.

du -hs /*
8.0K/backup
7.5M/bin
*382G/bkhdd*
89M /boot
4.0K/cgroup
4.0K/command
208K/dev
79M /etc
*386G/home*
4.0K/isoqlog.domains
322M/lib
20K /lost+found
4.0K/media
0   /misc
4.0K/mnt
0   /net
64M /root
14M /sbin
4.0K/selinux
4.0K/service
4.0K/srv
680K/tmp
4.3G/usr
1.9G/var

Here

/bkhdd is mount in /dev/sdb

/home is mount in /dev/sda

But the size is not match in /dev/sda

On Thu, Apr 7, 2016 at 3:42 PM, John R Pierce <pie...@hogranch.com> wrote:

> On 4/7/2016 12:04 AM, Chandran Manikandan wrote:
>
>> Still no luck .
>> I have tried your commands in root folder.
>> It's showing max size 384 only in home directory.
>>
>> But if i try df -h shown 579.
>>
>> Is there any way to find out recycle bin folder
>>
>
>
> Linux shell has no such thing as a recycle bin, thats a windows thing
> (some linux graphical desktops might create one in for a user's files, it
> would be in his /home/username somewhere).
>
> df -h shows a lot of info, for instance on one of my servers, I see...
>
> # df -h
> FilesystemSize  Used Avail Use% Mounted on
> /dev/mapper/vg_free-lv_root
>50G  7.7G   39G  17% /
> tmpfs  12G 0   12G   0% /dev/shm
> /dev/sda1 477M  146M  306M  33% /boot
> /dev/mapper/vg_free-lv_home
>30G  7.1G   23G  25% /home
> /dev/mapper/vg_free-lvpgsql
>30G  671M   30G   3% /var/lib/pgsql
> /dev/mapper/vg_free-lvimages
>   150G   61G   90G  41% /var/lib/libvirt/images
> /dev/mapper/vgdata-lvhome2
>   1.8T  470G  1.4T  26% /home2
>
> # du -hs /home/*
> 398M/home/downloads
> 16K /home/ipsloth
> 16K /home/junk
> 4.1G/home/observers
> 32M /home/pierce
> 2.5G/home/scac
>
> 2.5GB + 4.1 GB + the odds and ends there adds up to pretty close to the
> 7.1GB 'used' in the /home file system.
>
>
>
>
>
>
>
> --
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>
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Re: [CentOS] Suddenly increased my hard disk

[Chandran Manikandan]

Hi John, Ashish,

Still no luck .
I have tried your commands in root folder.
It's showing max size 384 only in home directory.

But if i try df -h shown 579.

Is there any way to find out recycle bin folder

On Thu, Apr 7, 2016 at 2:16 PM, Ashish Yadav <gwalash...@gmail.com> wrote:

> Hi Chandran,
>
>
> On Thu, Apr 7, 2016 at 10:38 AM, Chandran Manikandan <tech2m...@gmail.com>
> wrote:
>
> > Hi John,
> > Am currently running dos mode not graphical mode.
> > Could you have any other method.
> >
> > Hi Ashish,
> > You are correct.
> > qmailtoaster backup file which was around 184 GB in backup.gz type and i
> > have removed .bz2 type file with the same backup/mailbkup directory.
> >
> > After removed .bz2 file it's gone backup.gz also which was 184 GB file.
> > I have run this command locate .gz but couldn't find out it.
> >
> > how do i see the open files.
> >
> > Could you help me to find out this file or any soln.
> >
>
> Follow this link for more information,
> <http://www.cyberciti.biz/faq/howto-linux-get-list-of-open-files/>
>
> --Regards
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Re: [CentOS] Suddenly increased my hard disk

[Chandran Manikandan]

Hi John,
Am currently running dos mode not graphical mode.
Could you have any other method.

Hi Ashish,
You are correct.
qmailtoaster backup file which was around 184 GB in backup.gz type and i
have removed .bz2 type file with the same backup/mailbkup directory.

After removed .bz2 file it's gone backup.gz also which was 184 GB file.
I have run this command locate .gz but couldn't find out it.

how do i see the open files.

Could you help me to find out this file or any soln.


On Thu, Apr 7, 2016 at 12:55 PM, Ashish Yadav <gwalash...@gmail.com> wrote:

> Hi Chandran,
>
>
> On Thu, Apr 7, 2016 at 9:14 AM, Chandran Manikandan <tech2m...@gmail.com>
> wrote:
>
> > Hi All,
> >
> > I have running Centos 6.5 32 bit machine.
> > This machine is running qmailtoaster packages and mailbox size is 385 GB.
> >
> > if i run the df -h command it show 385 GB out of 1TB
> >
> > I have run the same command today suddenly shows 576 GB out of 1 TB.
> >
> > I didn't update any bulk file and mail transaction is not very high.
> >
> > How do i check this issue and fix it.
> >
> > how do i find out and why suddenly showing this much of increasing the
> size
> > of hard disk.
> >
> > Could anyone help me
> >
>
> Basically, df reads the superblock only and trusts it completely.  du reads
> each object and sums them up.
>
> Any running process can keep a deleted file open. This means the space will
> still be reserved and seen by df,
> but since du will no longer see a reference to that file in the directory
> tree, it cannot see those reserved blocks.
>
> Try to see the number of open file which could be causing the problem.
>
>
> --Regards
> Ashishkumar S. Yadav
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Re: [CentOS] Suddenly increased my hard disk

[Chandran Manikandan]

Hi Digimer,

Should i need to run above command in home directory or root.
Could you help me.

On Thu, Apr 7, 2016 at 11:49 AM, Digimer <li...@alteeve.ca> wrote:

> On 06/04/16 11:44 PM, Chandran Manikandan wrote:
> > Hi All,
> >
> > I have running Centos 6.5 32 bit machine.
> > This machine is running qmailtoaster packages and mailbox size is 385 GB.
> >
> > if i run the df -h command it show 385 GB out of 1TB
> >
> > I have run the same command today suddenly shows 576 GB out of 1 TB.
> >
> > I didn't update any bulk file and mail transaction is not very high.
> >
> > How do i check this issue and fix it.
> >
> > how do i find out and why suddenly showing this much of increasing the
> size
> > of hard disk.
> >
> > Could anyone help me
> >
>
> Start with 'du -hs /'. If one of the directories is bigger than
> expected, re-run in that directory. Repeat until you find the
> unexpectedly large directory.
>
> --
> Digimer
> Papers and Projects: https://alteeve.ca/w/
> What if the cure for cancer is trapped in the mind of a person without
> access to education?
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[CentOS] Suddenly increased my hard disk

[Chandran Manikandan]

Hi All,

I have running Centos 6.5 32 bit machine.
This machine is running qmailtoaster packages and mailbox size is 385 GB.

if i run the df -h command it show 385 GB out of 1TB

I have run the same command today suddenly shows 576 GB out of 1 TB.

I didn't update any bulk file and mail transaction is not very high.

How do i check this issue and fix it.

how do i find out and why suddenly showing this much of increasing the size
of hard disk.

Could anyone help me

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[CentOS] How to install VPN server

[Chandran Manikandan]

Hi All,

I have running centos 6 server in my head quarters and branch offices.

I need to access file server files in both location using VPN.

How to setup vpn server in both location and how to access it.

Could any one help me.

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Re: [CentOS] Storage Install and configure on Centos

[Chandran Manikandan]

Thank you John

On Fri, Sep 19, 2014 at 12:36 PM, John R Pierce pie...@hogranch.com wrote:

 On 9/18/2014 9:14 PM, Chandran Manikandan wrote:

 Dear All,
 I would like to study and practice for storage in Centos 5 and 6. Could
 anyone guide me.

 What is cluster and Virtualization technology how to implement in our
 office.


 http://www.redhat.com/en/services/training/courses-by-curriculum


 --
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 somewhere on the middle of the left coast

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[CentOS] Storage Install and configure on Centos

[Chandran Manikandan]

Dear All,
I would like to study and practice for storage in Centos 5 and 6. Could
anyone guide me.

What is cluster and Virtualization technology how to implement in our
office.

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[CentOS] Install and configure Nagios

[Chandran Manikandan]

Hi All,
How to install and configure monitoring tools Nagios,lcinga,Zabbix and
Ngnix on COS5 and COS6.

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Re: [CentOS] I want to make own pbx server

[Chandran Manikandan]

Hi,
Thanks for your advise. I want to make calls and receive calls only
internal head office and branch office only using desktop sip dialer. So
how to make it.


On Tue, Oct 29, 2013 at 1:03 PM, John R Pierce pie...@hogranch.com wrote:

 On 10/28/2013 9:41 PM, Chandran Manikandan wrote:
  I want to make own ip pbx server for our office with need to call local
  extension through soft dialer.
  How to make this system without any pstn provider.

 reinventing the wheel.   roll your own telephony will suck up an
 infinite supply of your time and energy, and likely end up with a system
 that noone but you can understand and manage.   you'll still need a PSTN
 provider if you want to be able to make/receive outside calls from this
 system.

 and yeah, asterisk.org is the building block that enables all this
 wonderful stuff





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Re: [CentOS] I want to make own pbx server

[Chandran Manikandan]

Hi,
Thanks for your suggestion. I have install asterisk now and i opened web
gui. After that how do i install extension and choose the device .


On Tue, Oct 29, 2013 at 2:59 PM, Rob Kampen rkam...@kampensonline.comwrote:

 On 10/29/2013 07:51 PM, John R Pierce wrote:

 On 10/28/2013 11:35 PM, Chandran Manikandan wrote:

So
 how to make it.

 www.asterisk.org

 its very complicated, every system is different, read, and learn, and
 put together the pieces you need.

 VERY COMPLICATED unless you understand telephony, numbering plans etc. The
 * book is very good once you understand the basics. I have been there and
 done it, not for the faint hearted.
 There are a number of web based * interfaces that help make the set up a
 little easier. There are also devices in a box you can purchase that make
 it even easier, almost plug and play - see www.yeastar.com  mypbx.com
 YMMV

  or hire someone who does that stuff.



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Re: [CentOS] I want to make own pbx server

[Chandran Manikandan]

Thank you all.


On Tue, Oct 29, 2013 at 3:56 PM, John R Pierce pie...@hogranch.com wrote:

 On 10/29/2013 12:43 AM, Chandran Manikandan wrote:
  Thanks for your suggestion. I have install asterisk now and i opened web
  gui. After that how do i install extension and choose the device .

 I bet there's an Asterisk mailling list.   This one is CentOS, and
 Asterisk isn't really in scope.



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 somewhere on the middle of the left coast

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[CentOS] I want to make own pbx server

[Chandran Manikandan]

Hi All,
I want to make own ip pbx server for our office with need to call local
extension through soft dialer.
How to make this system without any pstn provider.

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Re: [CentOS] how to install open vpn on centos 5.7 32 bit

[Chandran Manikandan]

Hi ,
I have installed successfully open vpn and i tried to connect on windows 8
using open vpn client software it 's shows not access server.

after put username and password it's shows like this.
How to solve this.


On Mon, Oct 21, 2013 at 8:05 PM, SilverTip257 silvertip...@gmail.comwrote:

 On Mon, Oct 21, 2013 at 4:29 AM, Chandran Manikandan tech2m...@gmail.com
 wrote:

  Hi All,
  How to install openvpn on centos 5.7 32 bit and client will be used
 windows
  xp,7,8 and ubuntu desktop.
  Please help me any one on this
 

 1. Add a repo that has packages for openvpn (ex: EPEL [0]). Configure
 proper repo priorities.
 2. yum install openvpn -y

 [0] http://dl.fedoraproject.org/pub/epel/5/i386/repoview/openvpn.html
 [1] http://lmgtfy.com/?q=centos+openvpn+install
 [2]

 https://www.digitalocean.com/community/articles/how-to-setup-and-configure-an-openvpn-server-on-centos-6


 
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Re: [CentOS] Install VPN Server

[Chandran Manikandan]

Hi,
How to check 1194 port whether open or not on the server and client. And
how to open the port in both client and server.


On Mon, Oct 21, 2013 at 5:19 PM, Paolo De Michele
pa...@paolodemichele.itwrote:

 hi Chandran,

 if you create a connection using PPTP with windows he will query the
 remote ip on port 1723.
 if you have a VPN on the remote server you type openVPN you need the
 appropriate client that will query the remote server on port 1194

 in Window 8 you can install the openVPN client:
 http://openvpn.net/index.php/access-server/download-openvpn-as-sw/357.html
 there is no support for windows 8 but should work the same. try .it


 let me know
 thank you



 On 10/21/2013 10:50 AM, Chandran Manikandan wrote:
  Hi Paolo,
  I have installed proper way and open vpn is running perfect on centos
  server. But i could not connect from windows 8 desktop and i tried to
  connect open vpn client GUI and shows below message.
 
  read UDPv4: Connection reset by peer (WSAECONNRESET) (code=10054)
 
  Could you please help me.
 
  What is the different between open vpn and pptp.
 
 
  On Thu, Oct 10, 2013 at 6:30 PM, Paolo De Michele
  pa...@paolodemichele.itwrote:
 
  hi,
 
  you can try this tutorial:
 http://safesrv.net/install-openvpn-on-centos/
  let me know if you have problems
 
 
 
 
  2013/10/10 Chandran Manikandan tech2m...@gmail.com
 
  Hi All,
  I have running Centos 5.7 32 bit server .
  I would like to install vpn server in this same  machine and would like
  to
  access my emails and samba through VPN.
  How to do install vpn server and config as well in which VPN is
 reliable
  and fast.
  Please anyone give me the full step and procedure.
 
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[CentOS] how to install open vpn on centos 5.7 32 bit

[Chandran Manikandan]

Hi All,
How to install openvpn on centos 5.7 32 bit and client will be used windows
xp,7,8 and ubuntu desktop.
Please help me any one on this

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Re: [CentOS] Install VPN Server

[Chandran Manikandan]

Hi Paolo,
I have installed proper way and open vpn is running perfect on centos
server. But i could not connect from windows 8 desktop and i tried to
connect open vpn client GUI and shows below message.

read UDPv4: Connection reset by peer (WSAECONNRESET) (code=10054)

Could you please help me.

What is the different between open vpn and pptp.


On Thu, Oct 10, 2013 at 6:30 PM, Paolo De Michele
pa...@paolodemichele.itwrote:

 hi,

 you can try this tutorial: http://safesrv.net/install-openvpn-on-centos/
 let me know if you have problems




 2013/10/10 Chandran Manikandan tech2m...@gmail.com

  Hi All,
  I have running Centos 5.7 32 bit server .
  I would like to install vpn server in this same  machine and would like
 to
  access my emails and samba through VPN.
  How to do install vpn server and config as well in which VPN is reliable
  and fast.
  Please anyone give me the full step and procedure.
 
  --
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  *Manikandan.C*
  *System Administrator*
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[CentOS] Install VPN Server

[Chandran Manikandan]

Hi All,
I have running Centos 5.7 32 bit server .
I would like to install vpn server in this same  machine and would like to
access my emails and samba through VPN.
How to do install vpn server and config as well in which VPN is reliable
and fast.
Please anyone give me the full step and procedure.

-- 
*Thanks,*
*Manikandan.C*
*System Administrator*
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