connlimit

connlimit

[php0t]

  Dear developers,

I've had a nice time trying to limit connections. The kernel is
2.6.17.8.
Apart from the first couple of annoyances (such as the patch being
renamed from iplimit to connlimit, patch-o-matic not being able to apply
it to the current kernel etc), I've managed to patch manually, compile
it as a module and load it.

  However, when I try to add an according test rule, I get the 'Invalid
argument' error, and dmesg says:
ip_tables: connlimit match: invalid size 0 != 16

I also tried going to the site mentioned in the latest pom-ng's
source.list:

# ipp2p, time, IPMARK and connlimit maintained by Krzysztof Oledzki
<ole@ans.pl>
http://people.netfilter.org/ole/pom/

But all I get is a smiley :)

When I google for my current problem, most suggest that connlimit is
out-of-date, nobody cares about it any more, etc.

As I'm no C coder, my two questions are,
1) what could I do  to make this work ? Are there any similar modules
available that are stable?
2) could it be possible to stabilize this patch and have it added to the
kernel source? There are so many iptables extensions and modules by
default that are probably rarely used, why is this (IMHO very basic)
feature excluded?

  Thanks for reading and any replies
P.

Re: connlimit

[Phil Oester]

On Mon, Aug 14, 2006 at 01:14:20AM +0200, php0t wrote:
> 
>   Dear developers,
> 
> I've had a nice time trying to limit connections. The kernel is
> 2.6.17.8.
> Apart from the first couple of annoyances (such as the patch being
> renamed from iplimit to connlimit, patch-o-matic not being able to apply
> it to the current kernel etc), I've managed to patch manually, compile
> it as a module and load it.
> 
>   However, when I try to add an according test rule, I get the 'Invalid
> argument' error, and dmesg says:
> ip_tables: connlimit match: invalid size 0 != 16

See this thread:

http://marc.theaimsgroup.com/?l=netfilter-devel&m=115334461228009&w=2

> When I google for my current problem, most suggest that connlimit is
> out-of-date, nobody cares about it any more, etc.

Next time try searching the netfilter archives directly.

Phil

Re: connlimit

[Patrick McHardy]

php0t wrote:
>   Dear developers,
> 
> I've had a nice time trying to limit connections. The kernel is
> 2.6.17.8.
> Apart from the first couple of annoyances (such as the patch being
> renamed from iplimit to connlimit, patch-o-matic not being able to apply
> it to the current kernel etc), I've managed to patch manually, compile
> it as a module and load it.
> 
>   However, when I try to add an according test rule, I get the 'Invalid
> argument' error, and dmesg says:
> ip_tables: connlimit match: invalid size 0 != 16
> 
> I also tried going to the site mentioned in the latest pom-ng's
> source.list:
> 
> # ipp2p, time, IPMARK and connlimit maintained by Krzysztof Oledzki
> <ole@ans.pl>
> http://people.netfilter.org/ole/pom/
> 
> But all I get is a smiley :)

Just do what it says: "Please use "./runme --download" from a recent
pom-ng." :)

That will download the patches for you.

Re: connlimit

[Krzysztof Oledzki]

[-- Attachment #1: Type: TEXT/PLAIN, Size: 1161 bytes --]



On Mon, 14 Aug 2006, Patrick McHardy wrote:

> php0t wrote:
>>   Dear developers,
>>
>> I've had a nice time trying to limit connections. The kernel is
>> 2.6.17.8.
>> Apart from the first couple of annoyances (such as the patch being
>> renamed from iplimit to connlimit, patch-o-matic not being able to apply
>> it to the current kernel etc), I've managed to patch manually, compile
>> it as a module and load it.
>>
>>   However, when I try to add an according test rule, I get the 'Invalid
>> argument' error, and dmesg says:
>> ip_tables: connlimit match: invalid size 0 != 16
>>
>> I also tried going to the site mentioned in the latest pom-ng's
>> source.list:
>>
>> # ipp2p, time, IPMARK and connlimit maintained by Krzysztof Oledzki
>> <ole@ans.pl>
>> http://people.netfilter.org/ole/pom/
>>
>> But all I get is a smiley :)
>
> Just do what it says: "Please use "./runme --download" from a recent
> pom-ng." :)
>
> That will download the patches for you.

This is the new message which I placed few hours ago, after the first 
mail. Now everyone should know what to do. :)

Best regards,


 				Krzysztof Olędzki

connlimit

[benjamin fernandis]

Hi,

I have a mail server with web server which have 500 customers site and
mail account.Since couple of days i m suffering with so many
connections.

So please guide me to configure ratelimit for that.I need to confiugre
connlimit for http , imap , imaps, pop, smtp.

and also suggest me connlimit value which is ideal for my setup.

OS REDHAT 5.5

Thanks,
Benjo

Re: connlimit

[Jan Engelhardt]

On Monday 2011-03-07 12:53, benjamin fernandis wrote:

>Hi,
>
>I have a mail server with web server which have 500 customers site and
>mail account.Since couple of days i m suffering with so many
>connections.
>
>So please guide me to configure ratelimit for that.I need to confiugre
>connlimit for http , imap , imaps, pop, smtp.
>
>and also suggest me connlimit value which is ideal for my setup.
>
>	OS REDHAT 5.5

The OS value is suboptimal, since the 5.x series's kernel and iptables 
is old and ships a broken connlimit.

Re: connlimit

[benjamin fernandis]

connlimit is working on per second basis or..........?

can i configure limit per second per ip.............


Benjo

On Mon, Mar 7, 2011 at 5:34 PM, Jan Engelhardt <jengelh@medozas.de> wrote:
> On Monday 2011-03-07 12:53, benjamin fernandis wrote:
>
>>Hi,
>>
>>I have a mail server with web server which have 500 customers site and
>>mail account.Since couple of days i m suffering with so many
>>connections.
>>
>>So please guide me to configure ratelimit for that.I need to confiugre
>>connlimit for http , imap , imaps, pop, smtp.
>>
>>and also suggest me connlimit value which is ideal for my setup.
>>
>>       OS REDHAT 5.5
>
> The OS value is suboptimal, since the 5.x series's kernel and iptables
> is old and ships a broken connlimit.
>

Re: connlimit

[Jan Engelhardt]

On Monday 2011-03-07 13:31, benjamin fernandis wrote:

>connlimit is working on per second basis or..........?
>
>can i configure limit per second per ip.............

The well-known version of xt_connlimit (as present in Linux 2.6.23 and 
onwards) supports groups of subnet prefixes of src addresses, and counts 
the _number of connections_. For _rates_, see xt_hashlimit and/or 
xt_rateest.
xt_connlimit in Linux 2.6.39 will support dstaddr matching.

connlimit

[Carlos Miranda]

After downloading patch-o-matic-20031219.tar.bz2 and running "# KERNEL_DIR=/usr/src/redhat/BUILD/kernel-2.6.18/linux-2.6.18.i586 ./runme pending", I could not see CONNLIMIT module to path the kernel.

anyone to tell with patch need to be installed to have connlimit working?

Thank you,
Carlos

_________________________________________________________________
Ligue para os seus amigos grátis. Faça chamadas de PC-para-PC pelo messenger-- GRÁTIS
http://get.live.com/messenger/overview

Re: connlimit

[Martin Schiøtz]

Had the same problem but discovered that you have to do:

 [root@shaper10 patch-o-matic-ng-20070108]# ./runme --download
Successfully downloaded external patch geoip
Successfully downloaded external patch condition
Successfully downloaded external patch IPMARK
Successfully downloaded external patch connlimit
Successfully downloaded external patch ipp2p
Successfully downloaded external patch time

etc.

- Martin

On 1/10/07, Carlos Miranda <cerlm@hotmail.com> wrote:
>
> After downloading patch-o-matic-20031219.tar.bz2 and running "# KERNEL_DIR=/usr/src/redhat/BUILD/kernel-2.6.18/linux-2.6.18.i586 ./runme pending", I could not see CONNLIMIT module to path the kernel.
>
> anyone to tell with patch need to be installed to have connlimit working?
>
> Thank you,
> Carlos
>
> _________________________________________________________________
> Ligue para os seus amigos grátis. Faça chamadas de PC-para-PC pelo messenger-- GRÁTIS
> http://get.live.com/messenger/overview
>

Re: connlimit

[ArcosCom Linux User]

./runme --download



El Mie, 10 de Enero de 2007, 15:16, Carlos Miranda escribió:
>
> After downloading patch-o-matic-20031219.tar.bz2 and running "#
> KERNEL_DIR=/usr/src/redhat/BUILD/kernel-2.6.18/linux-2.6.18.i586 ./runme
> pending", I could not see CONNLIMIT module to path the kernel.
>
> anyone to tell with patch need to be installed to have connlimit working?
>
> Thank you,
> Carlos
>
> _________________________________________________________________
> Ligue para os seus amigos grátis. Faça chamadas de PC-para-PC pelo
> messenger-- GRÁTIS
> http://get.live.com/messenger/overview
>

connlimit

[Martin Schiøtz]

Hi

Just installed Fedora Core 6 with:
  kernel-2.6.18-1.2869.fc6
  iptables-1.3.5-1.2.1

I want to use connlimit on a bridge (eth0 and eth1) but it gives me this error:
iptables: Unknown error 4294967295

It looks like connlimit is included in iptables
(/lib/iptables/libipt_connlimit.so) but as remember I also need
'ipt_connlimt.ko' module in the kernel. In older days I think I
compiled the kernel with:
CONFIG_IP_NF_MATCH_LIMIT=m

But when I look at the kernel config for kernel-2.6.18-1.2869.fc6 I
see something like:
CONFIG_NETFILTER_XT_MATCH_LIMIT=m

This is something about xtables - what is xtables?

Which module(s) do I need if I want to use 'connlimit'?

Do I need to patch with patch-o-matic?

:-)
Martin

CONNLIMIT

[Luiz C. Spies]

Hi to all, i try many time limit my port 25 to 2 connection, but i have no
achieve success yet!!!

I tried this rulez!
iptables -A INPUT -p tcp --syn --dport 25 -m connlimit --connlimit-above
2 --connlimit-mask 32 -j REJECT --reject-with tcp-reset
iptables -A INPUT -p tcp --syn --dport 25 -m connlimit --connlimit-above
2 -j REJECT
iptables -p tcp --syn --dport 25 -m connlimit --connlimit-above 2 -j REJECT
iptables -p tcp --syn --dport 25 -m connlimit ! --connlimit-above 2 -j
ACCEPT

Anyone has idea!!!???


Greeting's to all!

PS: Sorry about my english!


Luiz C. Spies

-- 
Esta mensagem foi verificada pelo sistema de antivírus e
 acredita-se estar livre de perigo.

Re: CONNLIMIT

[Rio Martin.]

Try using -j DROP instead of -j REJECT
And the last rule seemed to ACCEPT all of those rules you ve applied before.
Remove it.

Regards,
Rio Martin.
---------------------------------------------------------
Network & System Engineer
Network Operation Center
INSTITUT TEKNOLOGI NASIONAL 
Email: rio@martin.mu
Website: http://www.itenas.ac.id
---------------------------------------------------------

On Wednesday 06 April 2005 20:50, Luiz C. Spies wrote:
> Hi to all, i try many time limit my port 25 to 2 connection, but i have no
> achieve success yet!!!
>
> I tried this rulez!
> iptables -A INPUT -p tcp --syn --dport 25 -m connlimit --connlimit-above
> 2 --connlimit-mask 32 -j REJECT --reject-with tcp-reset
> iptables -A INPUT -p tcp --syn --dport 25 -m connlimit --connlimit-above
> 2 -j REJECT
> iptables -p tcp --syn --dport 25 -m connlimit --connlimit-above 2 -j REJECT
> iptables -p tcp --syn --dport 25 -m connlimit ! --connlimit-above 2 -j
> ACCEPT
>
> Anyone has idea!!!???
>
>
> Greeting's to all!
>
> PS: Sorry about my english!
>
>
> Luiz C. Spies

CONNLIMIT

[Luiz C. Spies]

Hi to all, i try many time limit my port 25 to 2 connection, but i have no
achieve success yet!!!

I tried this rulez!
iptables -A INPUT -p tcp --syn --dport 25 -m connlimit --connlimit-above
2 --connlimit-mask 32 -j REJECT --reject-with tcp-reset
iptables -A INPUT -p tcp --syn --dport 25 -m connlimit --connlimit-above
2 -j REJECT
iptables -p tcp --syn --dport 25 -m connlimit --connlimit-above 2 -j REJECT
iptables -p tcp --syn --dport 25 -m connlimit ! --connlimit-above 2 -j
ACCEPT

Anyone has idea!!!???


Greeting's to all!

PS: Sorry about my english!


Luiz C. Spies

-- 
Esta mensagem foi verificada pelo sistema de antivírus e
 acredita-se estar livre de perigo.

Connlimit

[Michał Margula]

Hello!

	Using latest patch-o-matic and 2.4.25 i have following problem when 'make 
modules':

ipt_connlimit.c: In function `init':
ipt_connlimit.c:219: `ip_conntrack_module' undeclared (first use in this 
function)
ipt_connlimit.c:219: (Each undeclared identifier is reported only once
ipt_connlimit.c:219: for each function it appears in.)
ipt_connlimit.c:220: warning: value computed is not used
ipt_connlimit.c: In function `fini':
ipt_connlimit.c:227: `ip_conntrack_module' undeclared (first use in this 
function)
ipt_connlimit.c:228: warning: value computed is not used
make[2]: *** [ipt_connlimit.o] Error 1
make[2]: Leaving directory `/usr/src/linux-2.4.25/net/ipv4/netfilter'
make[1]: *** [_modsubdir_ipv4/netfilter] Error 2
make[1]: Leaving directory `/usr/src/linux-2.4.25/net'
make: *** [_mod_net] Error 2

It is caused when I choose connlimit as a module. Whats wrong?

-- 
Michał Margula, alchemyx@uznam.net.pl, http://alchemyx.uznam.net.pl/
"W życiu piękne są tylko chwile" [Ryszard Riedel]

Re: Connlimit

[Michał Margula]

Dnia śro 25. lutego 2004 15:33, Michał Margula napisał:
> It is caused when I choose connlimit as a module. Whats wrong?

Using p-o-m-ng solved that issue.

-- 
Michał Margula, alchemyx@uznam.net.pl, http://alchemyx.uznam.net.pl/
"W życiu piękne są tylko chwile" [Ryszard Riedel]