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From: "Konstantin A. Lepikhov" <lakostis@anti-leasure.ru>
To: community@altlinux.ru
Subject: [Comm] Re: iptables, port 0 и Stealth (blocked ports, REJECT)
Date: Sun, 27 Mar 2005 20:06:34 +0400
Message-ID: <20050327160634.GA3615@lks.home> (raw)
In-Reply-To: <op.sn89yfupglg102@post.cnt.ru>

Hi Владимир!

Saturday 26, at 08:38:29 PM you wrote:

> Еще один stealth-тест:
> GRC Port Authority Report created on UTC: 2005-03-26 at 16:30:26
> 
> Results from scan of ports: 0, 21-23, 25, 79, 80, 110, 113,
>                             119, 135, 139, 143, 389, 443, 445,
>                             1002, 1024-1030, 1720, 5000
> 
>     0 Ports Open
>     1 Ports Closed
>    25 Ports Stealth
> ---------------------
>    26 Ports Tested
> 
> NO PORTS were found to be OPEN.
> 
> The port found to be CLOSED was: 0
> 
> Other than what is listed above, all ports are STEALTH.
> 
> TruStealth: FAILED - NOT all tested ports were STEALTH,
>                    - Received one or more unsolicited packets,
>                    - NO Ping reply (ICMP Echo) was received.
> 
> После всего этого у меня возникли следующие вопросы
> 
> 1. Что за порт 0 и как его закрывать?
netstat -vatwun ?

> 2. Нужно ли добиваться, чтобы по таким онлайн-тестам все порты от 0 до  
> 1055 были бы BLOCKED (Stealth) (в случае теста Shields UP все порты на  
> диаграмме в зеленом цвете)?
не факт, например, если нужен доступ извне к какой-нибудь службе, то зачем
ее закрывать.

> 3. Насколько жизнеспособна (недырява) таблица filter в моем исполнении для  
> простейшего шлюза с одной задачей - доступ в интернет для локальной сети.
Лучше поставьте firehol и не мучайтесь.

PS Например, чего у меня показало после тестирования:

Results from scan of ports: 0-1055

    	     1 Ports Open
    	     1 Ports Closed
 	  1054 Ports Stealth
	 ---------------------
	  1056 Ports Tested

	  The port found to be OPEN was: 22

	  The port found to be CLOSED was: 113

	  Other than what is listed above, all ports are STEALTH.

	  TruStealth: FAILED - NOT all tested ports were STEALTH,
	                     - NO unsolicited packets were received,
                             - NO Ping reply (ICMP Echo) was received.

-- 
WBR, Konstantin	      chat with ==>ICQ: 109916175
     Lepikhov,	      speak  to ==>JID: lakostis@jabber.org
aka L.A. Kostis       write  to ==>mailto:lakostis@pisem.net.nospam

...The information is like the bank... 			  (c) EC8OR


  parent reply	other threads:[~2005-03-27 16:06 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-03-26 17:38 [Comm] " Владимир Гусев
2005-03-27 14:05 ` Владимир Гусев
2005-03-27 16:06 ` Konstantin A. Lepikhov [this message]
2005-03-27 16:35   ` [Comm] " Владимир Гусев
2005-03-27 16:59     ` Konstantin A. Lepikhov
2005-03-27 17:33       ` Владимир Гусев
2005-03-27 17:26     ` Michael Shigorin
2005-03-28  7:41       ` Владимир Гусев
2005-03-28  7:56         ` [Comm] FPROFTPD Наумкин Сергей
2005-03-28  9:58           ` Genix
2005-03-28 10:02             ` Alexey I. Froloff
2005-03-28 11:42       ` [Comm] Re: iptables, port 0 и Stealth (blocked ports, REJECT) Владимир Гусев
2005-03-28 19:34         ` Владимир Гусев
2005-03-28 13:20   ` Владимир Гусев

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