Re: [pfSense] How could I block messages trying to pass as from my net?

2018-05-18 Thread Eero Volotinen 
You should use postscreen/blacklist to block spam?

Eero

pe 18. toukok. 2018 klo 17.43 Alberto José García Fumero <
albe...@ettpartagas.co.cu> kirjoitti:

> Hi all.
>
> I use PfSense 2.2.1. Of course I know it would very convenient to
> upgrade, but right now it isn't possible.
>
> Im trying to block spam (for instance, from 185.234.217.232).
> As far as I know, it's trying to pass as a message from my very net:
>
> Transcript of session follows.
> De: Mail Delivery System  cu>
> Para:   Postmaster 
> Asunto: Postfix SMTP server: errors from
> unknown[185.234.217.232]
> Fecha:  Fri, 18 May 2018 10:10:39 -0400 (CDT)
>  Out: 220 partagas.ettpartagas.co.cu ESMTP Partagas
>  In:  EHLO 190.6.79.98
>  Out: 250-partagas.ettpartagas.co.cu
>  Out: 250-PIPELINING
>  Out: 250-SIZE 1524
>  Out: 250-ETRN
>  Out: 250-STARTTLS
>  Out: 250-ENHANCEDSTATUSCODES
>  Out: 250-8BITMIME
>  Out: 250 DSN
>  In:  AUTH LOGIN
>  Out: 503 5.5.1 Error: authentication not enabled
>
> Session aborted, reason: lost connection
>
> For other details, see the local mail logfile
>
> but the MTA correctly rejects it as a fake.
>
> I have created an alias list (rechaza) in the menu Firewall/Aliases,
> where I put all the addresses known to be spammers, and tried to reject
> them with the rule in Firewall/Rules/WAN
>
> Action: Block
> Interface: WAN
> TCP/IP version: IPV4
> Protocol: TCP
> Source: (single hots or alias) rechaza
> Destination: 190.6.79.98
> Destination port range: any
>
> but I can not stop the spam right in the WAN interface.
>
> How could I create a convenient rule?
>
> TIA,
>
> Fumero
>
> --
> M.Sc. Alberto García Fumero
> Usuario Linux 97 138, registrado 10/12/1998
> http://interese.cubava.cu
> No son las horas que pones en tu trabajo lo que cuenta, sino el trabajo
> que pones en esas horas.
>
>
>
>
> ___
> pfSense mailing list
> https://lists.pfsense.org/mailman/listinfo/list
> Support the project with Gold! https://pfsense.org/gold
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Re: [pfSense] How could I block messages trying to pass as from my net?

2018-05-18 Thread Steve Yates 
The "EHLO 190.6.79.98" greeting is not looked at by the firewall so that can be 
ignored.

Can you enable logging on the rule allowing port 25, and verify where the 
packets are actually coming from?

In most cases we set our clients up with our spam filter and the inbound port 
25 rule allows connections only from the spam filter server IP ranges...

--

Steve Yates
ITS, Inc.

-Original Message-
From: List  On Behalf Of Alberto José García 
Fumero
Sent: Friday, May 18, 2018 11:52 AM
To: list@lists.pfsense.org
Subject: Re: [pfSense] How could I block messages trying to pass as from my net?

El vie, 18-05-2018 a las 16:24 +, Steve Yates escribió:
>   I think your rule should work.  Are you sure there is not
> another rule above that one in the list of rules, that allows the
> inbound connection?  In other words the block rule has to be above
> the rule allowing traffic on port 25 to your mail server.
> 
> --
> 
> Steve Yates
> ITS, Inc.
> 
That rule is the third in the WAN section, after the one blocking rfc
1918 networks and the one blocking bogon networks.

Could I create a rule saying, for instance: "reject packets originating
(apparently!) from the WAN address and directed to my WAN address? (as
they are trying to forge identity) 

Should that work?
-- 
M.Sc. Alberto García Fumero
Usuario Linux 97 138, registrado 10/12/1998
http://interese.cubava.cu
No son las horas que pones en tu trabajo lo que cuenta, sino el trabajo
que pones en esas horas.




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Re: [pfSense] How could I block messages trying to pass as from my net?

2018-05-18 Thread Alberto José García Fumero 
El vie, 18-05-2018 a las 16:24 +, Steve Yates escribió:
>   I think your rule should work.  Are you sure there is not
> another rule above that one in the list of rules, that allows the
> inbound connection?  In other words the block rule has to be above
> the rule allowing traffic on port 25 to your mail server.
> 
> --
> 
> Steve Yates
> ITS, Inc.
> 
That rule is the third in the WAN section, after the one blocking rfc
1918 networks and the one blocking bogon networks.

Could I create a rule saying, for instance: "reject packets originating
(apparently!) from the WAN address and directed to my WAN address? (as
they are trying to forge identity) 

Should that work?
-- 
M.Sc. Alberto García Fumero
Usuario Linux 97 138, registrado 10/12/1998
http://interese.cubava.cu
No son las horas que pones en tu trabajo lo que cuenta, sino el trabajo
que pones en esas horas.




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Re: [pfSense] How could I block messages trying to pass as from my net?

2018-05-18 Thread Steve Yates 
I think your rule should work.  Are you sure there is not another rule 
above that one in the list of rules, that allows the inbound connection?  In 
other words the block rule has to be above the rule allowing traffic on port 25 
to your mail server.

--

Steve Yates
ITS, Inc.

-Original Message-
From: List  On Behalf Of Alberto José García 
Fumero
Sent: Friday, May 18, 2018 9:42 AM
To: pfSense Support and Discussion Mailing List 
Subject: [pfSense] How could I block messages trying to pass as from my net?

Hi all.

I use PfSense 2.2.1. Of course I know it would very convenient to
upgrade, but right now it isn't possible.

Im trying to block spam (for instance, from 185.234.217.232).
As far as I know, it's trying to pass as a message from my very net:

Transcript of session follows.
De: Mail Delivery System 
Para:   Postmaster 
Asunto: Postfix SMTP server: errors from
unknown[185.234.217.232]
Fecha:  Fri, 18 May 2018 10:10:39 -0400 (CDT)
 Out: 220 partagas.ettpartagas.co.cu ESMTP Partagas
 In:  EHLO 190.6.79.98
 Out: 250-partagas.ettpartagas.co.cu
 Out: 250-PIPELINING
 Out: 250-SIZE 1524
 Out: 250-ETRN
 Out: 250-STARTTLS
 Out: 250-ENHANCEDSTATUSCODES
 Out: 250-8BITMIME
 Out: 250 DSN
 In:  AUTH LOGIN
 Out: 503 5.5.1 Error: authentication not enabled

Session aborted, reason: lost connection

For other details, see the local mail logfile

but the MTA correctly rejects it as a fake.

I have created an alias list (rechaza) in the menu Firewall/Aliases,
where I put all the addresses known to be spammers, and tried to reject
them with the rule in Firewall/Rules/WAN

Action: Block
Interface: WAN
TCP/IP version: IPV4
Protocol: TCP
Source: (single hots or alias) rechaza
Destination: 190.6.79.98
Destination port range: any

but I can not stop the spam right in the WAN interface.

How could I create a convenient rule?

TIA,

Fumero  

-- 
M.Sc. Alberto García Fumero
Usuario Linux 97 138, registrado 10/12/1998
http://interese.cubava.cu
No son las horas que pones en tu trabajo lo que cuenta, sino el trabajo
que pones en esas horas.




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pfSense mailing list
https://lists.pfsense.org/mailman/listinfo/list
Support the project with Gold! https://pfsense.org/gold
___
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https://lists.pfsense.org/mailman/listinfo/list
Support the project with Gold! https://pfsense.org/gold

[pfSense] How could I block messages trying to pass as from my net?

2018-05-18 Thread Alberto José García Fumero 
Hi all.

I use PfSense 2.2.1. Of course I know it would very convenient to
upgrade, but right now it isn't possible.

Im trying to block spam (for instance, from 185.234.217.232).
As far as I know, it's trying to pass as a message from my very net:

Transcript of session follows.
De: Mail Delivery System 
Para:   Postmaster 
Asunto: Postfix SMTP server: errors from
unknown[185.234.217.232]
Fecha:  Fri, 18 May 2018 10:10:39 -0400 (CDT)
 Out: 220 partagas.ettpartagas.co.cu ESMTP Partagas
 In:  EHLO 190.6.79.98
 Out: 250-partagas.ettpartagas.co.cu
 Out: 250-PIPELINING
 Out: 250-SIZE 1524
 Out: 250-ETRN
 Out: 250-STARTTLS
 Out: 250-ENHANCEDSTATUSCODES
 Out: 250-8BITMIME
 Out: 250 DSN
 In:  AUTH LOGIN
 Out: 503 5.5.1 Error: authentication not enabled

Session aborted, reason: lost connection

For other details, see the local mail logfile

but the MTA correctly rejects it as a fake.

I have created an alias list (rechaza) in the menu Firewall/Aliases,
where I put all the addresses known to be spammers, and tried to reject
them with the rule in Firewall/Rules/WAN

Action: Block
Interface: WAN
TCP/IP version: IPV4
Protocol: TCP
Source: (single hots or alias) rechaza
Destination: 190.6.79.98
Destination port range: any

but I can not stop the spam right in the WAN interface.

How could I create a convenient rule?

TIA,

Fumero  

-- 
M.Sc. Alberto García Fumero
Usuario Linux 97 138, registrado 10/12/1998
http://interese.cubava.cu
No son las horas que pones en tu trabajo lo que cuenta, sino el trabajo
que pones en esas horas.




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Support the project with Gold! https://pfsense.org/gold