how to delete a piece of rule in iptables?

how to delete a piece of rule in iptables?

[bobo]

             i have insert some rules to iptables firewall.now,i would 
like to delete it  .
but i only know to use iptalbes -L to empty them.
but it lead to delete all the rules in it.
how to do ??

Re: how to delete a piece of rule in iptables?

[Marcello Scacchetti]

Hi,
you can use iptables -D or -X or -F. -D to delete a single rule, -X do
detele a chain and -F to flush all rules from a chain.
Refer to man 8 iptables for details and examples.

Marcello

Il mer, 2002-12-18 alle 13:30, bobo ha scritto:
>              i have insert some rules to iptables firewall.now,i would 
> like to delete it  .
> but i only know to use iptalbes -L to empty them.
> but it lead to delete all the rules in it.
> how to do ??
> 
-- 
Marcello Scacchetti <marcello.scacchetti@nextrem.it>

Re: how to delete a piece of rule in iptables?

[ITM CS Ruslan O. Nesterov]

Hello bobo,

Wednesday, December 18, 2002, 3:30:18 PM, you wrote:

b>              i have insert some rules to iptables firewall.now,i would 
b> like to delete it  .
b> but i only know to use iptalbes -L to empty them.
b> but it lead to delete all the rules in it.
b> how to do ??


Try to use
iptables -D INPUT 1
this will delete rule 1 in input chain

-- 
Best regards,
 ITM                            mailto:ruslan@complexsystem.ru

Re: how to delete a piece of rule in iptables?

[Narendra Prabhu. B]

Hello,

There is a option --line-numbers, which can be used with -L in iptables.
Knowing the line/rule numbers ... u can later delete the specific rule.

Commands :

      #iptables -nL --line-numbers ---> this will show you the rulenumbers

      #iptables -D <chain-name> <rule-number>

Bye,
Narendra.


In the middle of difficulty..... lies Opportunity. (Albert Einstein)
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On Wed, 18 Dec 2002, ITM CS Ruslan O. Nesterov wrote:

> Hello bobo,
>
> Wednesday, December 18, 2002, 3:30:18 PM, you wrote:
>
> b>              i have insert some rules to iptables firewall.now,i would
> b> like to delete it  .
> b> but i only know to use iptalbes -L to empty them.
> b> but it lead to delete all the rules in it.
> b> how to do ??
>
>
> Try to use
> iptables -D INPUT 1
> this will delete rule 1 in input chain
>
> --
> Best regards,
>  ITM                            mailto:ruslan@complexsystem.ru

how to delete a piece of rule in iptables?

[bobo]

             i have insert some rules to iptables firewall.now,i would 
like to delete it  .
but i only know to use iptalbes -L to empty them.
but it lead to delete all the rules in it.
how to do ??

Re: how to delete a piece of rule in iptables?

[Jason Huang]

bobo 提到:

>             i have insert some rules to iptables firewall.now,i would 
>like to delete it  .
>but i only know to use iptalbes -L to empty them.
>but it lead to delete all the rules in it.
>how to do ??
>
>
>
>  
>
This address is for developer, your question should be post in user
mailinglist.


The "-L" option will list all rules, use belows to flush it and use "man
iptables" to see more.
iptables -F
iptables -F -t nat
iptables -F -t mangle

iptables -X
iptables -X nat
iptables -X mangle

/Jason

Re: how to delete a piece of rule in iptables?

[Markus Schaber]

Hallo,

bobo <boboaq@163.com> schrieb:

>              i have insert some rules to iptables firewall.now,i would
>              
> like to delete it  .
> but i only know to use iptalbes -L to empty them.
> but it lead to delete all the rules in it.
> how to do ??

"iptables --help" gives you a short command overview.

"man iptables" gives you more extensive help.

Gruß,
Markus

-- 
Markus Schaber - http://www.schabi.de/

Schabi's Flohmarkt unter http://schabi.de/flohmarkt