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Rui F Ribeiro
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check if this is enabled or not by

sudo iptables -t nat -L 

If There are any entries , delete them using:

sudo iptables -F -t nat 

Try without src dest flags:

sudo iptables -t nat -A PREROUTING -p tcp --dport 30 -j REDIRECT --to-ports 1234 

check again if this is enabled or not by

sudo iptables -t nat -L 

It is Important to remove chained entries queued by default to "OUTPUT" route.

Hope This helps!!

check if this is enabled or not by

sudo iptables -t nat -L 

If There are any entries , delete them using:

sudo iptables -F -t nat 

Try without src dest flags:

sudo iptables -t nat -A PREROUTING -p tcp --dport 30 -j REDIRECT --to-ports 1234 

check again if this is enabled or not by

sudo iptables -t nat -L 

It is Important to remove chained entries queued by default to "OUTPUT" route.

Hope This helps!!

check if this is enabled or not by

sudo iptables -t nat -L 

If There are any entries , delete them using:

sudo iptables -F -t nat 

Try without src dest flags:

sudo iptables -t nat -A PREROUTING -p tcp --dport 30 -j REDIRECT --to-ports 1234 

check again if this is enabled or not by

sudo iptables -t nat -L 

It is Important to remove chained entries queued by default to "OUTPUT" route.

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check if this is enabled or not by

sudo iptables -t nat -L 

If There are any entries , delete them using:

sudo iptables -F -t nat 

Try without src dest flags:

sudo iptables -t nat -A PREROUTING -p tcp --dport 30 -j REDIRECT --to-ports 1234 

check again if this is enabled or not by

sudo iptables -t nat -L 

Hope This helps!!. It is Important to remove chained entries queued by default to "OUTPUT" route.

Hope This helps!!

check if this is enabled or not by

sudo iptables -t nat -L 

If There are any entries , delete them using:

sudo iptables -F -t nat 

Try without src dest flags:

sudo iptables -t nat -A PREROUTING -p tcp --dport 30 -j REDIRECT --to-ports 1234 

check again if this is enabled or not by

sudo iptables -t nat -L 

Hope This helps!!. It is Important to remove chained entries queued by default to "OUTPUT" route.

check if this is enabled or not by

sudo iptables -t nat -L 

If There are any entries , delete them using:

sudo iptables -F -t nat 

Try without src dest flags:

sudo iptables -t nat -A PREROUTING -p tcp --dport 30 -j REDIRECT --to-ports 1234 

check again if this is enabled or not by

sudo iptables -t nat -L 

It is Important to remove chained entries queued by default to "OUTPUT" route.

Hope This helps!!

Source Link

check if this is enabled or not by

sudo iptables -t nat -L 

If There are any entries , delete them using:

sudo iptables -F -t nat 

Try without src dest flags:

sudo iptables -t nat -A PREROUTING -p tcp --dport 30 -j REDIRECT --to-ports 1234 

check again if this is enabled or not by

sudo iptables -t nat -L 

Hope This helps!!. It is Important to remove chained entries queued by default to "OUTPUT" route.