Re: [CentOS] CentOS 6 - logwatch report not in HTML format

[Alexander Farber]

Maybe the format is set in

sudo crontab -l

Am Montag, 29. August 2016 schrieb Arun Khan :

> CentOS 6 (amd64) up to date with latest security / bug fixes.
>
> The logwatch reports come in plain text even though the config states HTML.
>
> 
> mailer = "/usr/sbin/sendmail -t"
> TmpDir = /tmp
> MailFrom = logwa...@example.com 
> MailTo = admin1 admin2 admin3
> Range = yesterday
> Detail = Medium
> HostName = www.example.com
> Print = No
> Output = mail
> Format = html
> 
>
> The same settings in Debian/Ubuntu servers send the reports in HTML format.
>
> In my search, I did not come across any solution for CentOS 6.
>
> Any ideas on how to get logwatch to generate HTML reports?
>
> Thanks for your help.
>
> -- Arun Khan
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Re: [CentOS] .htaccess file

[Arun Khan]

On Sun, Aug 28, 2016 at 5:23 PM, Keith Keller
 wrote:
> On 2016-08-28, TE Dukes  wrote:
>
>> Right now, I'm just trying to take some load off my
>> home server from badbots but I am getting hit on other services as well.
>
> Another possibility for you to look at is sshguard.  It can protect
> against brute force ssh attacks (using iptables rules, which is how I
> use it) but IIRC it can also protect against http attacks (I've never
> used it that way, so I don't know how difficult this is).

I use fail2ban, provides similar functionality like sshguard + Apache
mod_evasive (for http DoS attacks).

-- Arun Khan
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[CentOS] CentOS 6 - logwatch report not in HTML format

[Arun Khan]

CentOS 6 (amd64) up to date with latest security / bug fixes.

The logwatch reports come in plain text even though the config states HTML.


mailer = "/usr/sbin/sendmail -t"
TmpDir = /tmp
MailFrom = logwa...@example.com
MailTo = admin1 admin2 admin3
Range = yesterday
Detail = Medium
HostName = www.example.com
Print = No
Output = mail
Format = html


The same settings in Debian/Ubuntu servers send the reports in HTML format.

In my search, I did not come across any solution for CentOS 6.

Any ideas on how to get logwatch to generate HTML reports?

Thanks for your help.

-- Arun Khan
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Re: [CentOS] .htaccess file

[Keith Keller]

On 2016-08-28, TE Dukes  wrote:
> I setup an ipset but quickly ran out of room in the set. I guess I'll have
> to setup multiple sets.

I'm not familiar with ipsets, but from a quick Google search it seems
like you can increase the size of an ipset (or make a new larger one and
migrate your IPs to the new one).  Multiple sets looks like it'd work as
well.

> Right now, I'm just trying to take some load off my
> home server from badbots but I am getting hit on other services as well.

Another possibility for you to look at is sshguard.  It can protect
against brute force ssh attacks (using iptables rules, which is how I
use it) but IIRC it can also protect against http attacks (I've never
used it that way, so I don't know how difficult this is).

Can you be more specific about the "load" you're trying to mitigate?  Is
it really the load on your home system, or is it that attackers are
using your bandwidth, or a combination?

--keith


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Re: [CentOS] .htaccess file

[Kahlil Hodgson]

> There's nothing on the webserver except a test site I use. Just trying to
> keep out the ones that ignore robots.txt

If its just a test server, then I'd be tempted to use HTTP AUTH at the
top level. Most robots will be blocked by that, and you can use
iptables to block the ones that try to guess your password, perhaps
with fail2ban.

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Re: [CentOS] .htaccess file

[TE Dukes]

> -Original Message-
> From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On
> Behalf Of Keith Keller
> Sent: Sunday, August 28, 2016 4:23 PM
> To: centos@centos.org
> Subject: Re: [CentOS] .htaccess file
> 
> On 2016-08-28, TE Dukes  wrote:
> >
> > I'm just not following or understanding. The .htaccess file works but
> > on a slow DSL, I don't want the hits.
> 
> What exactly is slow when you receive requests from remote clients that
you
> don't want?  Are you actually seeing problems when clients make requests
> and Apache has to read in your 2MB .htaccess on every request?
> And if so, you might also consider moving your blocking even higher, to
> iptables rules, so that Apache never even has to deal with them.
> 
> > I added the following to my httpd.conf:
> >
> >
> > AddType text/htdocs ".txt"
> >
> 
> > And copied my .htaccess to /var/www/htdocs as htaccess.txt
> 
> Where did you get the idea that this is how to do global Apache
> configuration?  This won't actually do anything useful.
> 
> > In the example from the apache website, I don't get the: AddType
> > text/example ".exm" Where did they come up .exm?
> 
> They made it up as an example, to demonstrate how directives work in
> .htaccess files versus global Apache config files.  It's not meant to
> demonstrate how to add blocking rules to the global config.
> 
> Here's the main point of that page:
> 
> "Any directive that you can include in a .htaccess file is better set in a
> Directory block, as it will have the same effect with better performance."
> 
> So, to achieve what I think you're hoping, take all the IPs you're denying
in
> your .htaccess file, put them into a relevant Directory block in a config
file
> under /etc/httpd, reload Apache, and move your .htaccess file out of the
> way.  Then httpd will no longer have to read in .htaccess for every HTTP
> request.
> 
> Or, alternatively, block those IPs using iptables instead.  However,
clients will
> still be able to make those requests, and that will still use bandwidth on
your
> DSL.  The only way to eliminate that altogether is to block those requests
on
> the other side of your link.  That's something you'd have to work out with
> your ISP, but I don't think it's common for ISPs to put up blocking rules
solely
> for this purpose, or to allow home users to configure such blocks
themselves.
> 
> --keith
> 
[Thomas E Dukes] 
I setup an ipset but quickly ran out of room in the set. I guess I'll have
to setup multiple sets. Right now, I'm just trying to take some load off my
home server from badbots but I am getting hit on other services as well.

There's nothing on the webserver except a test site I use. Just trying to
keep out the ones that ignore robots.txt

Thanks!!

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Re: [CentOS] .htaccess file

[TE Dukes]

> -Original Message-
> From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On
> Behalf Of Albert McCann
> Sent: Sunday, August 28, 2016 2:01 PM
> To: 'CentOS mailing list'
> Subject: Re: [CentOS] .htaccess file
> 
> > -Original Message-
> > From: centos-boun...@centos.org [mailto:centos-boun...@centos.org]
> On
> > Behalf Of TE Dukes
> > Sent: Sunday, August 28, 2016 10:36 AM
> 
> > My home system on a DSL line is getting worn out by bad behavior robots.
> 
> > Awhile back, I created a .htaccess file that block countries by IP
blocks.
> > Its 2MB in size.
> 
> ...
> > So, today, I tried following the directions for apache.org website,
> > https://httpd.apache.org/docs/current/howto/htaccess.html to move the
> > .htaccess
> 
> What version of CentOS are you using?
> 
> For 7.x, and I think 6.x, there is a much simpler way of doing this, using
> mod_geoip from the Epel repository.
> 
> It rejects all unwanted HTTP connections using 403 responses. Here's an
> example geoip.conf file, which is what I'm using:
> 
> 
> 
>   GeoIPEnable On
>   GeoIPDBFile /usr/share/GeoIP/GeoIP.dat MemoryCache
>   GeoIPOutput Env
> # Proxies
>   SetEnvIf GEOIP_COUNTRY_CODE A1 BlockCountry #Country blocks
>   SetEnvIf GEOIP_COUNTRY_CODE TR BlockCountry
>   SetEnvIf GEOIP_COUNTRY_CODE IR BlockCountry #... more countries using
> the two char country code 
> 
> On C7 this file goes here /etc/httpd/conf.d/geoip.conf
> 
> Make sure that /etc/httpd/conf.modules.d/10-geoip.conf loads the library
> file, and is not remarked out with a #.
> 
> There is more info on mod_geoip here (but use the installation from Epel)
> though:
> 
> http://dev.maxmind.com/geoip/legacy/mod_geoip2/
> 
> I run a server for personal family purposes, and use this to block many of
the
> places my family doesn't live...
> 
> Al McCann
> Certe, Toto, sentio nos in Kansate non iam adesse.
[Thomas E Dukes] 
Thanks,

I'll take a look at that as well. I am getting hit on several services but
httpd is getting the majority.

Thanks!!

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Re: [CentOS] .htaccess file

[Keith Keller]

On 2016-08-28, TE Dukes  wrote:
>
> I'm just not following or understanding. The .htaccess file works but on a
> slow DSL, I don't want the hits.

What exactly is slow when you receive requests from remote clients that
you don't want?  Are you actually seeing problems when clients make
requests and Apache has to read in your 2MB .htaccess on every request?
And if so, you might also consider moving your blocking even higher, to
iptables rules, so that Apache never even has to deal with them.

> I added the following to my httpd.conf:
>
>
> AddType text/htdocs ".txt"
>

> And copied my .htaccess to /var/www/htdocs as htaccess.txt

Where did you get the idea that this is how to do global Apache
configuration?  This won't actually do anything useful.

> In the example from the apache website, I don't get the: AddType
> text/example ".exm" Where did they come up .exm? 

They made it up as an example, to demonstrate how directives work in
.htaccess files versus global Apache config files.  It's not meant to
demonstrate how to add blocking rules to the global config.

Here's the main point of that page:

"Any directive that you can include in a .htaccess file is better set in
a Directory block, as it will have the same effect with better
performance."

So, to achieve what I think you're hoping, take all the IPs you're
denying in your .htaccess file, put them into a relevant Directory block
in a config file under /etc/httpd, reload Apache, and move your 
.htaccess file out of the way.  Then httpd will no longer have to read in
.htaccess for every HTTP request.

Or, alternatively, block those IPs using iptables instead.  However,
clients will still be able to make those requests, and that will still
use bandwidth on your DSL.  The only way to eliminate that altogether is
to block those requests on the other side of your link.  That's
something you'd have to work out with your ISP, but I don't think it's
common for ISPs to put up blocking rules solely for this purpose, or to
allow home users to configure such blocks themselves.

--keith

-- 
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[CentOS] Off Topic: CentOS Public mirror question

[Valeri Galtsev]

Dear All,

My apologies for asking my question on less appropriate list. I did ask it
on centos-mir...@centos.org, but that list is really low traffic (and slow
response probably - I only got acknowledgement of my post...). On the
other hand, I'm sure there are many public mirror maintainers on this list
who may help me with my trouble.

Upon replacing faulty machine hosting public mirrors I have noticed that I
can not rsync CentOS (all other mirrors do rsync happily as they did on
failed box). I probably have missed some announcement, so my apologies for
asking what I should know already myself.

Which higher tier mirror should I use to rsync CentOS from (including
DVDs) to public mirror I maintain?

I use probably outdated source to rsync from. Namely, here is my rsync
line (in longer cron job):

rsync -aqH --exclude .~tmp~/ --exclude .~tmp~ --delete\
 msync-dvd.centos.org::CentOS-incdvd /data/mirror/centos

- and I'm getting the following error:

@ERROR: Unknown module 'CentOS-incdvd'

I also tried what CentOS public mirror wiki suggests, and get similar error:

rsync -aqH --exclude .~tmp~/ --exclude .~tmp~ --delete\
 us-msync.centos.org::CentOS /data/mirror/centos

@ERROR: Unknown module 'CentOS'


Independent on this error I also have a bit strange answer in DNS
resolution of msync-dvd.centos.org:

# host msync-dvd.centos.org
msync-dvd.centos.org has address 209.44.106.213
Host msync-dvd.centos.org not found: 2(SERVFAIL)


I would appreciate any help or pointers.

Thanks a lot in advance for all your answers!

Valeri


Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247


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Re: [CentOS] BIND (named) as secondary and .jnl files

[Anand Buddhdev]

On 28/08/16 19:42, Walter H. wrote:

Hi Walter,

> I have two running BINDs in my LAN, one on my router box and one as VM;
> both are caching DNS servers, and a few zones are on both, on the box as
> master and on the VM as slave,
> but how can I cleanup/flush the growing .jnl files;

By default, BIND places no limit on journal files, so they keep growing.
To limit their size, add this to the "options" section of the configuration:

max-journal-size 10m;

You will probably need to flush the zones, stop BIND, remove the large
journals, and then start BIND again.

Regards,
Anand
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Re: [CentOS] .htaccess file

[Albert McCann]

> -Original Message-
> From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On
> Behalf Of TE Dukes
> Sent: Sunday, August 28, 2016 10:36 AM

> My home system on a DSL line is getting worn out by bad behavior robots.

> Awhile back, I created a .htaccess file that block countries by IP blocks.
> Its 2MB in size.

...
> So, today, I tried following the directions for apache.org website,
> https://httpd.apache.org/docs/current/howto/htaccess.html to move the
> .htaccess

What version of CentOS are you using?

For 7.x, and I think 6.x, there is a much simpler way of doing this, using
mod_geoip from the Epel repository. 

It rejects all unwanted HTTP connections using 403 responses. Here's an
example geoip.conf file, which is what I'm using:



  GeoIPEnable On
  GeoIPDBFile /usr/share/GeoIP/GeoIP.dat MemoryCache
  GeoIPOutput Env
# Proxies
  SetEnvIf GEOIP_COUNTRY_CODE A1 BlockCountry
#Country blocks
  SetEnvIf GEOIP_COUNTRY_CODE TR BlockCountry
  SetEnvIf GEOIP_COUNTRY_CODE IR BlockCountry
#... more countries using the two char country code


On C7 this file goes here /etc/httpd/conf.d/geoip.conf

Make sure that /etc/httpd/conf.modules.d/10-geoip.conf loads the library
file, and is not remarked out with a #.

There is more info on mod_geoip here (but use the installation from Epel)
though:

http://dev.maxmind.com/geoip/legacy/mod_geoip2/

I run a server for personal family purposes, and use this to block many of
the places my family doesn't live...

Al McCann
Certe, Toto, sentio nos in Kansate non iam adesse.

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[CentOS] BIND (named) as secondary and .jnl files

[Walter H.]

Hello,

I have two running BINDs in my LAN, one on my router box and one as VM;
both are caching DNS servers, and a few zones are on both, on the box as 
master and on the VM as slave,

but how can I cleanup/flush the growing .jnl files;

rndc freeze
rndc thaw

doesn't work as these are not master ...

Thanks,
Walter


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[CentOS] .htaccess file

[TE Dukes]

Hello,

 

My home system on a DSL line is getting worn out by bad behavior robots. 

 

Awhile back, I created a .htaccess file that block countries by IP blocks.
Its 2MB in size.

 

I have been running Linux since Slackware 1.0 and moved to Redhat around
2.0. I started after running a BBS using a doorway for newsgroups. Been
hooked ever since.

 

So, today, I tried following the directions for apache.org website,
https://httpd.apache.org/docs/current/howto/htaccess.html to move the
.htaccess
  file to a file located in a directory /var/www/htdocs.

 

I'm just not following or understanding. The .htaccess file works but on a
slow DSL, I don't want the hits.

 

I added the following to my httpd.conf:

 



AddType text/htdocs ".txt"



 

And copied my .htaccess to /var/www/htdocs as htaccess.txt

 

In the example from the apache website, I don't get the: AddType
text/example ".exm" Where did they come up .exm? 
 
TIA

 

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Re: [CentOS] Kickstart issue with UEFi

[Andreas Benzler]

Here is how i dig it up.

# efi partionen ???
%pre --interpreter /bin/sh
if [ -d "/sys/firmware/efi" ]; then
echo "part /boot/efi --fstype=efi --grow --maxsize=200
--size=200" >/tmp/efipartition-ks.tmp
else
echo "# no efi system" >/tmp/efipartition-ks.tmp
fi
%end

# System bootloader configuration
bootloader --location=mbr
# Clear the Master Boot Record
zerombr
# Partition clearing information
clearpart --all --initlabel
# Disk partitioning information
%include /tmp/efipartition-ks.tmp
part /boot --fstype="ext4" --size=250
# make the physical partition for the LVM to sit on "pv.01" is
"partition volume number 01" alternatively something like "pv.02393"
would be fine.
# this partition should "grow" to fill the entire disk, the initial size
is 1mb (don't use 0 here)

Sincerly
Andy

Am Sonntag, den 28.08.2016, 21:36 +1000 schrieb Phil Manuel:
> > On 28 Aug 2016, at 10:04 AM, Chris Murphy  wrote:
> > 
> > On Fri, Aug 26, 2016 at 10:39 AM, Gordon Messmer
> > mailto:gordon.mess...@gmail.com>> wrote:
> >> On 08/25/2016 11:35 PM, Phil Manuel wrote:
> >>> 
> >>> The relevant kickstart section is:-
> >>> 
> >>> part /boot/efi --fstype efi --grow --maxsize=200 --size=20 --ondisk=sda
> >>> bootloader --append=" crashkernel=auto" --location=mbr --boot-drive=sda1
> >>> autopart --type=lvm
> >> 
> >> 
> >> 
> >> A couple of things to consider:
> >> * The documentation for "autopart" states that "The autopart command can't
> >> be used with the logvol, part/partition, raid, reqpart, or volgroup in the
> >> same kickstart file," so your use of autopart and "part /boot/efi" appear 
> >> to
> >> be incompatible.  Maybe drop the "part" line.
> >> * I specify partitions for kickstart, but my bootloader line is:
> >>  bootloader --location=mbr --append="net.ifnames=0 biosdevname=0"
> >>  No location is specified, the installer works it out.  Given the error you
> >> posted, I think sda1 might not be where anaconda is putting the EFI
> >> partition.
> > 
> > That appears to be basically correct. It'll put it on sda1 but it
> > doesn't want you to tell it to put it on sda1 when using autopart.
> > Pretty much autopart wants to be told very little, and Phil's
> > kickstart is being too explicit for autopart.
> > 
> > 
> 
> Thanks for all the comments to date, so I should try:-
> 
> clearpart --all --initlabel --drives=sda,sdb
> ignoredisk --only-use=sda,sdb
> # System bootloader configuration
> bootloader --append=" crashkernel=auto" --location=mbr
> autopart --type=lvm
> 
> There is also a nvme drive in the system too, hence the use of "ignoredisk 
> --only-use=sda,sdb”.
> 
> Phil
> 
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Re: [CentOS] Kickstart issue with UEFi

[Phil Manuel]

> On 28 Aug 2016, at 10:04 AM, Chris Murphy  wrote:
> 
> On Fri, Aug 26, 2016 at 10:39 AM, Gordon Messmer
> mailto:gordon.mess...@gmail.com>> wrote:
>> On 08/25/2016 11:35 PM, Phil Manuel wrote:
>>> 
>>> The relevant kickstart section is:-
>>> 
>>> part /boot/efi --fstype efi --grow --maxsize=200 --size=20 --ondisk=sda
>>> bootloader --append=" crashkernel=auto" --location=mbr --boot-drive=sda1
>>> autopart --type=lvm
>> 
>> 
>> 
>> A couple of things to consider:
>> * The documentation for "autopart" states that "The autopart command can't
>> be used with the logvol, part/partition, raid, reqpart, or volgroup in the
>> same kickstart file," so your use of autopart and "part /boot/efi" appear to
>> be incompatible.  Maybe drop the "part" line.
>> * I specify partitions for kickstart, but my bootloader line is:
>>  bootloader --location=mbr --append="net.ifnames=0 biosdevname=0"
>>  No location is specified, the installer works it out.  Given the error you
>> posted, I think sda1 might not be where anaconda is putting the EFI
>> partition.
> 
> That appears to be basically correct. It'll put it on sda1 but it
> doesn't want you to tell it to put it on sda1 when using autopart.
> Pretty much autopart wants to be told very little, and Phil's
> kickstart is being too explicit for autopart.
> 
> 

Thanks for all the comments to date, so I should try:-

clearpart --all --initlabel --drives=sda,sdb
ignoredisk --only-use=sda,sdb
# System bootloader configuration
bootloader --append=" crashkernel=auto" --location=mbr
autopart --type=lvm

There is also a nvme drive in the system too, hence the use of "ignoredisk 
--only-use=sda,sdb”.

Phil

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Re: [CentOS] CentOS 7 : keyboard shortcut for mouse gesture?

[Kahlil Hodgson]

Try the Windows key on a PC or the Command key on a Mac


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Re: [CentOS] CentOS 7 : keyboard shortcut for mouse gesture?

[Nicolas Kovacs]

Le 28/08/2016 à 09:37, Nicolas Kovacs a écrit :
> I have a CentOS 7 (GNOME) desktop installed as a VirtualBox guest on my
> Slackware64 14.1 workstation, to fiddle with it. Guest Additions are
> installed and configured OK, and 3D acceleration is working too.
> 
> In its default configuration, the GNOME desktop under CentOS shows an
> "exposé" (I don't know how you call this), a list of all open windows,
> when you move the mouse cursor to the upper left corner of the screen.
> When no window is open, you just see the sidebar with the application
> launchers, and on the right side you see the empty virtual desktops.
> 
> Is there a keyboard shortcut for this mouse gesture? I'm asking because
> on my dual-monitor workstation, the CentOS guest is displayed
> full-screen on my right monitor, and the mouse gesture seems to be
> ineffective.

I'll answer that myself, because I just found the answer to my question
in a Ubuntu forum.

Simply press the key with the Microsoft logo on it (I think it is called
the "Super" key).

Cheers,

Niki

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[CentOS] CentOS 7 : keyboard shortcut for mouse gesture?

[Nicolas Kovacs]

Hi,

I have a CentOS 7 (GNOME) desktop installed as a VirtualBox guest on my
Slackware64 14.1 workstation, to fiddle with it. Guest Additions are
installed and configured OK, and 3D acceleration is working too.

In its default configuration, the GNOME desktop under CentOS shows an
"exposé" (I don't know how you call this), a list of all open windows,
when you move the mouse cursor to the upper left corner of the screen.
When no window is open, you just see the sidebar with the application
launchers, and on the right side you see the empty virtual desktops.

Is there a keyboard shortcut for this mouse gesture? I'm asking because
on my dual-monitor workstation, the CentOS guest is displayed
full-screen on my right monitor, and the mouse gesture seems to be
ineffective.

Thanks,

Niki
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