[SOVLED by '!' ]how to specify IP not equal to in iptables rules ????

[Jatin K]

On Saturday 16 July 2011 02:22 PM, g wrote:
> On 07/16/2011 05:40 AM, Jatin K wrote:
>> On Saturday 16 July 2011 10:18 AM, g wrote:
>>> On 07/16/2011 04:25 AM, Jatin K wrote:
>>> <>
>>>
>>>> Sorry, that was my mistake  :-(
>>> that happens. but does make things difficult to help.
>>>
>>>> actually I got the solution what was needed, from this list.
>>> and was so noted. wherein, a little more info would be nice.
>>>
>>> did blocking work with;
>>>
>>>     [1] iptables -A INPUT ! -s 172.16.158.111 -p tcp --dport 21 -j DROP
>>> or
>>>     [2] iptables -A INPUT -s ! 172.16.158.111 -p tcp --dport 21 -j DROP
>>>
>>> syntax tends to indicate that [2] is correct, as [1] would tend to
>>> indicate "NOT source".
>>
>> [2] worked for me
> this is what i recall having used, and more logical.
>
>>    ...by the way we need to indicate !  like '!' ( in
>> single quote)
>>
>> iptables -A INPUT -s '!' 172.16.158.111 -p tcp --dport 21 -j DROP
> this is not as i recall using, nor is it as such in man page or in
> 'Red Hat Linux Firewalls'.
>
> in man page, when shown as an option, [!] is used. when in description,
> "!" is used. (with 2 exceptions)
>
> in 'Red Hat Linux Firewalls', examples are show without quotes.
>
> so,
>
>   [1] did you find without single quote to not work and then tried
>   with single quotes?
>

without single quote  like this[1]
[1]  iptables -A INPUT ! -s 172.16.158.111 -p tcp --dport 21 -j DROP

on bash it seems like it tries to find out previously run command  in my 
cash it finds a command started with -s ( which fails as I've not run 
any command which starts with -s )

but when I tried to put it like '!'... its good to go




> or,
>
>   [2] are you using "echo" to send line to iptables?
  no



> and please, excuse my questioning, as at this time i do not have a
> networking system available to experiment with, and your answers will
> help when i do. thank you.
>


Warm Regards

-- 
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   ^ ^  Jatin Khatri
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