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Marlen Niemczeski

Iptables

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Bom estou com dificuldades em fazer a liberação de portas no iptables.

 

Seguinte, so quero liberar uma unica porta que sera a do mysql 3306.

 

Uso CentOS na minha VPS de teste.

 

Seria exatamente mudar o arquivo /etc/sysconfig/iptables que originalmente estaria assim:

# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT

Para liberar GERAL ficaria assim:

# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT

Mas oque realmente quero é somente liberar o ip da minha hospedagem para ter essa porta liberada.

 

Porque? Porque estão invadindo meu mysql por essa porta. Mas preciso dela aberta para o acesso remoto do site.

 

Alguem pode me ajudar a fazer isso?

 

Pro exemplo, quero somente o ip 123.1.1.1 tenha acesso a essa porta. Os demais não.

 

Desde já obrigado!

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