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I created my own chain called test. I want to insert a new rule in the chain that drops all packets to an IP address at a specified port.

sudo iptables -I test -j DROP -d 130.x.y.z -dport 24 

The parrot OS VM tells me that it doesn't know the argument 24 in the above command. I have been trying this for like 2 hours and still haven't gotten anywhere.

-I inserts a rule

-j specifies the action to the packet in the rule

-d specifies the destination which should be an IP address and not a name

-dport should be the port # for which this firewall rule should act 

I have tried many variations such as --destination or --destination-port

Not sure how to get it to work.

linux iptables syntax parrotsec

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mnille

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I created my own chain called test. I want to insert a new rule in the chain that drops all packets to an IP address at a specified port.

sudo iptables -I test -j DROP -d 130.x.y.z -dport 24 

The parrot OS VM tells me that it doesn't know the argument 24 in the above command. I have been trying this for like 2 hours and still haven't gotten anywhere.

-I inserts a rule

-j specifies the action to the packet in the rule

-d specifies the destination which should be an IP address and not a name

-dport should be the port # for which this firewall rule should act 

I have tried many variations such as --destination or --destination-port

Not sure how to get it to work.

linux iptables syntax parrotsec

share|improve this question

edited 5 mins ago

mnille

42344 silver badges1212 bronze badges

asked 35 mins ago

teaNcodeteaNcode

111 bronze badge

New contributor

teaNcode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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 | 

I created my own chain called test. I want to insert a new rule in the chain that drops all packets to an IP address at a specified port.

sudo iptables -I test -j DROP -d 130.x.y.z -dport 24 

The parrot OS VM tells me that it doesn't know the argument 24 in the above command. I have been trying this for like 2 hours and still haven't gotten anywhere.

-I inserts a rule

-j specifies the action to the packet in the rule

-d specifies the destination which should be an IP address and not a name

-dport should be the port # for which this firewall rule should act 

I have tried many variations such as --destination or --destination-port

Not sure how to get it to work.

linux iptables syntax parrotsec

share|improve this question

edited 5 mins ago

mnille

42344 silver badges1212 bronze badges

asked 35 mins ago

teaNcodeteaNcode

111 bronze badge

New contributor

teaNcode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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sudo iptables -I test -j DROP -d 130.x.y.z -dport 24 

-I inserts a rule

-j specifies the action to the packet in the rule

-d specifies the destination which should be an IP address and not a name

-dport should be the port # for which this firewall rule should act 

share|improve this question

edited 5 mins ago

mnille

42344 silver badges1212 bronze badges

asked 35 mins ago

teaNcodeteaNcode

111 bronze badge

New contributor

teaNcode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 5 mins ago

mnille

42344 silver badges1212 bronze badges

asked 35 mins ago

teaNcodeteaNcode

111 bronze badge

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teaNcode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

edited 5 mins ago

mnille

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edited 5 mins ago

mnille

42344 silver badges1212 bronze badges

asked 35 mins ago

teaNcodeteaNcode

111 bronze badge

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teaNcode is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 35 mins ago

teaNcodeteaNcode

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1 Answer
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The problem is that your syntax is incorrect, try the following:

To block all traffic

iptables -I test -j DROP -d 130.x.y.z -p all

To block a specific port like ssh(22)

iptables -I test -j DROP -d 130.x.y.z -p tcp --dport 22

where -p is the protocol tcp or udp and --dport is the destination port

share

answered 33 secs ago

Heysus EscobarHeysus Escobar

1

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0

The problem is that your syntax is incorrect, try the following:

To block all traffic

iptables -I test -j DROP -d 130.x.y.z -p all

To block a specific port like ssh(22)

iptables -I test -j DROP -d 130.x.y.z -p tcp --dport 22

where -p is the protocol tcp or udp and --dport is the destination port

share

answered 33 secs ago

Heysus EscobarHeysus Escobar

1

New contributor

Heysus Escobar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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 | 

0

The problem is that your syntax is incorrect, try the following:

To block all traffic

iptables -I test -j DROP -d 130.x.y.z -p all

To block a specific port like ssh(22)

iptables -I test -j DROP -d 130.x.y.z -p tcp --dport 22

where -p is the protocol tcp or udp and --dport is the destination port

share

answered 33 secs ago

Heysus EscobarHeysus Escobar

1

New contributor

Heysus Escobar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment
 | 

The problem is that your syntax is incorrect, try the following:

To block all traffic

iptables -I test -j DROP -d 130.x.y.z -p all

To block a specific port like ssh(22)

iptables -I test -j DROP -d 130.x.y.z -p tcp --dport 22

where -p is the protocol tcp or udp and --dport is the destination port

share

answered 33 secs ago

Heysus EscobarHeysus Escobar

1

New contributor

Heysus Escobar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

iptables -I test -j DROP -d 130.x.y.z -p all

iptables -I test -j DROP -d 130.x.y.z -p tcp --dport 22

share

answered 33 secs ago

Heysus EscobarHeysus Escobar

1

New contributor

Heysus Escobar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

answered 33 secs ago

Heysus EscobarHeysus Escobar

1

New contributor

Heysus Escobar is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

answered 33 secs ago

Heysus EscobarHeysus Escobar

1