To block outgoing connections from redhat 7 using firewall-cmd
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Is there a way to block all outgoing connections from redhat 7 using firewall-cmd or iptables except for one IP.
It will make connections to specific IP while drop all connections to the rest.
I know this command to drop all connections but couldn't figure out how to allow external connections to only one IP
iptables -I OUTPUT -o eth1 -j DROP
networking iptables firewalld
edited Oct 10 '17 at 19:30
sebasth
6,02421643
asked Oct 10 '17 at 18:33
Venom
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up vote
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down vote
favorite
Is there a way to block all outgoing connections from redhat 7 using firewall-cmd or iptables except for one IP.
It will make connections to specific IP while drop all connections to the rest.
I know this command to drop all connections but couldn't figure out how to allow external connections to only one IP
iptables -I OUTPUT -o eth1 -j DROP
networking iptables firewalld
edited Oct 10 '17 at 19:30
sebasth
6,02421643
asked Oct 10 '17 at 18:33
Venom
981410
add a comment |Â
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Is there a way to block all outgoing connections from redhat 7 using firewall-cmd or iptables except for one IP.
It will make connections to specific IP while drop all connections to the rest.
I know this command to drop all connections but couldn't figure out how to allow external connections to only one IP
iptables -I OUTPUT -o eth1 -j DROP
networking iptables firewalld
edited Oct 10 '17 at 19:30
sebasth
6,02421643
asked Oct 10 '17 at 18:33
Venom
981410
Is there a way to block all outgoing connections from redhat 7 using firewall-cmd or iptables except for one IP.
It will make connections to specific IP while drop all connections to the rest.
I know this command to drop all connections but couldn't figure out how to allow external connections to only one IP
iptables -I OUTPUT -o eth1 -j DROP
networking iptables firewalld
networking iptables firewalld
edited Oct 10 '17 at 19:30
sebasth
6,02421643
asked Oct 10 '17 at 18:33
Venom
981410
edited Oct 10 '17 at 19:30
sebasth
6,02421643
asked Oct 10 '17 at 18:33
Venom
981410
edited Oct 10 '17 at 19:30
sebasth
6,02421643
edited Oct 10 '17 at 19:30
sebasth
6,02421643
edited Oct 10 '17 at 19:30
sebasth
6,02421643
6,02421643
asked Oct 10 '17 at 18:33
Venom
981410
asked Oct 10 '17 at 18:33
Venom
981410
asked Oct 10 '17 at 18:33
Venom
981410
981410
add a comment |Â
add a comment |Â
1 Answer
1
active
oldest
votes
up vote
1
down vote
iptables rules are generally evaluated until first matching rule. If you only want to allow traffic based on source/destination IP address, create rules to allow such traffic, and change the default action to reject/drop the rest. With such configuration, you also should add rules to allow loopback traffic.
For output chain:
iptables -A OUTPUT -o lo -j ACCEPT
iptables -A OUTPUT -d <ip-address> -j ACCEPT
iptables -A OUPUT REJECT
Similar rules for input chain:
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -s <ip-address> -j ACCEPT
iptables -P INPUT DROP
answered Oct 10 '17 at 19:30
sebasth
6,02421643
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
iptables rules are generally evaluated until first matching rule. If you only want to allow traffic based on source/destination IP address, create rules to allow such traffic, and change the default action to reject/drop the rest. With such configuration, you also should add rules to allow loopback traffic.
For output chain:
iptables -A OUTPUT -o lo -j ACCEPT
iptables -A OUTPUT -d <ip-address> -j ACCEPT
iptables -A OUPUT REJECT
Similar rules for input chain:
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -s <ip-address> -j ACCEPT
iptables -P INPUT DROP
answered Oct 10 '17 at 19:30
sebasth
6,02421643
add a comment |Â
up vote
1
down vote
iptables rules are generally evaluated until first matching rule. If you only want to allow traffic based on source/destination IP address, create rules to allow such traffic, and change the default action to reject/drop the rest. With such configuration, you also should add rules to allow loopback traffic.
For output chain:
iptables -A OUTPUT -o lo -j ACCEPT
iptables -A OUTPUT -d <ip-address> -j ACCEPT
iptables -A OUPUT REJECT
Similar rules for input chain:
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -s <ip-address> -j ACCEPT
iptables -P INPUT DROP
answered Oct 10 '17 at 19:30
sebasth
6,02421643
add a comment |Â
up vote
1
down vote
up vote
1
down vote
iptables rules are generally evaluated until first matching rule. If you only want to allow traffic based on source/destination IP address, create rules to allow such traffic, and change the default action to reject/drop the rest. With such configuration, you also should add rules to allow loopback traffic.
For output chain:
iptables -A OUTPUT -o lo -j ACCEPT
iptables -A OUTPUT -d <ip-address> -j ACCEPT
iptables -A OUPUT REJECT
Similar rules for input chain:
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -s <ip-address> -j ACCEPT
iptables -P INPUT DROP
answered Oct 10 '17 at 19:30
sebasth
6,02421643
iptables rules are generally evaluated until first matching rule. If you only want to allow traffic based on source/destination IP address, create rules to allow such traffic, and change the default action to reject/drop the rest. With such configuration, you also should add rules to allow loopback traffic.
For output chain:
iptables -A OUTPUT -o lo -j ACCEPT
iptables -A OUTPUT -d <ip-address> -j ACCEPT
iptables -A OUPUT REJECT
Similar rules for input chain:
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -s <ip-address> -j ACCEPT
iptables -P INPUT DROP
answered Oct 10 '17 at 19:30
sebasth
6,02421643
answered Oct 10 '17 at 19:30
sebasth
6,02421643
answered Oct 10 '17 at 19:30
sebasth
6,02421643
answered Oct 10 '17 at 19:30
sebasth
6,02421643
6,02421643
add a comment |Â
add a comment |Â
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