Firewall traffic rules: Difference between revisions

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The information in this page is updated in accordance with [https://wiki.teltonika-networks.com/view/FW_%26_SDK_Downloads '''00.07.03.4'''] firmware version.

The information in this page is updated in accordance with [https://wiki.teltonika-networks.com/view/FW_%26_SDK_Downloads '''00.07.13.1'''] firmware version.

==Introduction==

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It is important to be mindful of the order of traffic rules. The rules can always be rearranged by simply clicking on the symbol on the left side of the rule and dragging the rule where it is needed. You can also change the configuration of each rule by finding your rule in the traffic rules and pressing a '''‘pencil’''' button to edit settings.

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_rules_order~~.png|alt=firewall traffic rules rule order|border|class=tlt-border|~~800x800px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_1.png|alt=firewall traffic rules rule order|border|class=tlt-border|1000px]]

====Defining specific IP addresses and networks====

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=== Allow a single host to access a web server in WAN network. ===

----

~~ ~~Let’s imagine that we would like to restrict traffic for this LAN network (192.168.1.0/24) and only one host needs to have access to the web server (185.11.24.37) on the internet. ~~To achieve this,~~ traffic rules ~~could be configured~~.

Let’s imagine that we would like to restrict traffic for this LAN network (192.168.1.0/24) and only one host needs to have access to the web server (185.xxx.xxx.xxx) on the internet.

[[File:Firewall traffic rules topology v3.png||border|class=tlt-border|800x800px]]

Two traffic rules would be required for this scenario:

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All network traffic coming from the specified host (192.168.1.11) will match the first rule and will be allowed. All other traffic coming from other hosts on the local Network will not match the first rule, but will match the second rule and will be dropped.

In this scenario only the host named ‘PC2’ on the '''LAN''' will be able to reach a web server in '''WAN'''.

In this scenario, only the host named ‘PC2’ on the '''LAN''' will be able to reach a web server in '''WAN'''.

~~ ~~

~~[[File:Firewall_traffic_rules_topology.png||border|class=tlt-border|800x800px]]~~

====Traffic rule to block all traffic to WAN====

----

Create and configure the first rule to block all local traffic to WAN network.

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*Click '''‘Add’'''.

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_1-1_v1~~.png|alt=Firewall traffic rule to block LAN network.|border|class=tlt-border|~~800x800px]]~~

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_2.png|alt=Firewall traffic rule to block LAN network.|border|class=tlt-border|1000px]]

~~[[File:Traffic rule new size.png|border|class=tlt-border|828 × 159px]]~~

~~[[File:Networking_rutos_configuration_example_firewall_traffic_rules_1-1_v2.png|border|class=tlt-border|750 × 170px~~]]

A new window will pop-out where you will be able to specify additional settings.

*In the action field choose '''~~‘Drop’~~'''

# '''Enable the instance''';

# Choose Protocol: '''All''';

# Choose Source zone: '''lan''';

# Choose Destination zone: '''wan''';

# In the action field choose '''Drop''';

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_1-2_v1~~.png|alt=Firewall traffic rule to deny LAN network configuration|border|class=tlt-border|~~600x600px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_3.png|alt=Firewall traffic rule to deny LAN network configuration|border|class=tlt-border|1000px]]

Scroll down and press '''~~‘Save~~ & ~~Apply’~~'''.

Scroll down and press '''Save & Apply'''.

The new rule is created and enabled. To verify, go to the last page in '''‘Traffic rules’''' and verify that the rule is configured correctly and is enabled.

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_1-3_v1~~.png||border|class=tlt-border|~~800x800px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_4.png||border|class=tlt-border|1000px]]

====Traffic rule to allow the host access====

----

Create and configure the second rule to allow the host to access the web server:

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*Choose '''LAN''' as source zone.

*Choose '''WAN''' as destination zone.

*Click '''‘Add’'''.~~ ~~

*Click '''‘Add’'''.

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_2-1_v1~~.png|alt=Firewall traffic rule to allow single host to web server|border|class=tlt-border|~~800x800px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_5.png|alt=Firewall traffic rule to allow single host to web server|border|class=tlt-border|694x152px]]

A new window will pop-out where you will be able to specify additional settings.

*In the ~~protocol field, choose~~ '''TCP~~+UDP~~'''.

# '''Enable the instance''';

# Choose Protocol: '''UDP and TCP''';

*In the source IP address enter the IP address of the host in '''LAN''' that you wish to allow to access the web server. In this example, the IP address of PC2 is '''192.168.1.11'''.

# Choose Source zone: '''lan''';

*In the destination address field, enter the IP address of the web server, which is '''185.11.24.37''' in this example.

# In the source IP address enter the IP address of the host in '''LAN''' that you wish to allow to access the web server. In this example, the IP address of PC2 is '''192.168.1.11'''.

*In the destination port field add ports '''’80’''' and '''‘443’'''. These are '''HTTP''' and '''HTTPS''' port numbers that are used for communication with a web server.

# Choose Destination zone: '''wan''';

*In the action field choose '''~~‘Accept’~~'''.

# In the destination address field, enter the IP address of the web server, which is '''185.xxx.xxx.xxx''' in this example.

# In the destination port field add ports '''’80’''' and '''‘443’'''. These are '''HTTP''' and '''HTTPS''' port numbers that are used for communication with a web server.

~~[[File:Networking_rutos_configuration_example_firewall_traffic_rules_2-2_v1.png|alt=Firewall traffic rule to allow a single host to web server configuration|border|class=tlt-border|600x600px]]~~

# In the action field choose '''Accept''';

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_6_v2.png|alt=Firewall traffic rule to allow a single host to web server configuration|border|class=tlt-border|521x576px]]

You can specify additional settings as you wish. For example, you can set times when this rule should apply. This way, the host will be able to access the web server only at certain times.

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Scroll down and press '''‘Save & Apply’'''.

The new rule is created and enabled. To verify, go to the last page in '''‘Traffic rules’''' and verify that the rule is configured correctly and is enabled. In addition, we need to move the second rule and ensure that the second rule is above the first rule.

The new rule is created and enabled. To verify, go to the last page in '''‘Traffic rules’''' and verify that the rule is configured correctly and is enabled. In addition, we need to move the second rule and ensure that the second rule is above the first rule.

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_2-3_v1~~.png|alt=Firewall two traffic rules to allow only a single host to access web server enabled|border|class=tlt-border|~~800x800px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_7.png|alt=Firewall two traffic rules to allow only a single host to access web server enabled|border|class=tlt-border|1000px]]

These rules indicate that traffic from the host '''192.168.1.11''' in '''LAN''' destined to the IP address of '''185.xxx.xxx.xxx''' on ports '''80''' and '''443''' in '''WAN''' must be accepted. The '''‘Accept forward’''' indicates the action (accept). The slider on the right side shows that the rule is enabled. The rule is above the Deny-LAN-WAN rule, so that traffic from host 192.168.1.11 (PC2) matches the first rule and is accepted. Traffic from other hosts in LAN will match the second rule and will be dropped.

These rules ~~indicates~~ that traffic from the host '''192.168.1.11''' in '''LAN''' destined to the IP address of 185.11.24.37 on ports '''80''' and '''443''' in '''WAN''' must be accepted. The '''‘Accept forward’''' indicates the action (accept). The slider on the right side shows that the rule is enabled. The rule is above the Deny-LAN-WAN rule, so that traffic from host 192.168.1.11 (PC2) matches the first rule and is accepted. Traffic from other hosts in LAN will match the second rule and will be dropped.

===Opening a port on the device. ===

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*Press the '''‘Add’''' button.

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_3-1_v1~~.png|alt=Firewall traffic rule to open a port of a device||border|class=tlt-border|~~800x800px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_8.png|alt=Firewall traffic rule to open a port of a device||border|class=tlt-border|1000px]]

A new window will pop-out where you will be able to specify additional settings. For the purpose of just opening a port, no additional settings are required. Scroll down and press '''‘Save & Apply’'''.

A new window will pop-out where you will be able to specify additional settings. For the purpose of just opening a port, no additional settings are required. Scroll down and press '''‘Save & Apply’'''.

The new rule is created and enabled. To verify, go to the last page in '''‘Traffic rules’''' and verify that the rule is configured correctly and is enabled.

The new rule is created and enabled. To verify, go to the last page in '''‘Traffic rules’''' and verify that the rule is configured correctly and is enabled.~~ ~~

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_3-2_v1~~.png|alt=Firewall traffic rule to open a port on a device enabled||border|class=tlt-border|~~800x800px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_9.png|alt=Firewall traffic rule to open a port on a device enabled||border|class=tlt-border|1000px]]

~~ ~~

Here we can see that a new rule was created. It accepts '''TCP, UDP''' traffic from any host in '''WAN''' coming to the router on port '''8080'''. The slider on the right side is set to '''‘on’''' indicating that the rule is enabled.

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To open a port for only one host on LAN you would need to create 2 traffic rules. One rule to block LAN traffic from accessing the port on device, and the second rule to allow only a single host to access that port. Both rules have similarities. The steps below describe how to create and configure both rules with differences mentioned.

====Block traffic on a specific port from LAN====

~~First~~ rule:

----

A traffic rule to block packets on a specific port from LAN:

*In the '''‘Add type’''' field choose '''‘open ports on router’'''.

*Enter a name of your choice for this rule.

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*Click '''‘Add’.'''

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_4-1_v1~~.png|alt=Firewall traffic rule to deny a single port for LAN network||border|class=tlt-border|~~800x800px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_10.png|alt=Firewall traffic rule to deny a single port for LAN network||border|class=tlt-border|1000px]]

A new window will pop-out where you will be able to specify additional settings.

#'''Enable the instance'''

#Choose '''LAN''' as the source zone.

#Choose '''Device (input)''' as the Destination zone.

#Choose '''5000''' as Destination port.

#In the action field choose '''‘Drop’'''.

*Choose '''LAN''' as the source zone.

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_11_edit.png|alt=Firewall traffic rule to deny single port for LAN network configuration|border|class=tlt-border|1000px]]

*Leave the source IP field '''‘any’''' or specify a LAN network to block.

*In the action field choose '''‘Drop’'''.

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_4-2_v1~~.png|alt=Firewall traffic rule to deny single port for LAN network configuration|border|class=tlt-border|~~600x600px~~]]

Scroll down and press '''‘Save & Apply’'''.

The rule should not be created and enabled. The traffic coming from LAN to port 5000 on the device will now be dropped.

The second rule:

====Allow traffic on a specific port from a single host in LAN====

----

The second traffic rule to allow traffic on a specific port from a single host in LAN:

*In the '''‘Add type’''' field choose '''‘open ports on router’'''.

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*Select '''<nowiki/>'TCP+UDP'''' as protocols.

*Enter an external port to allow.

*Click '''‘Add’.''' ~~ ~~

*Click '''‘Add’.'''

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_5-1_v1.png|alt=Firewall traffic rule to allow a single host on one port|border|class=tlt-border|800x800px]]~~

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_12.png|alt=Firewall traffic rule to allow a single host on one port|border|class=tlt-border|1000px]]

* set the source IP address to the IP address of the host.

*In the action field choose '''‘Accept’'''.

~~[[File:Networking_rutos_configuration_example_firewall_traffic_rules_5-2_v1~~.png|alt=Firewall traffic rule to allow a single host on one port ~~configuration~~|border|class=tlt-border|~~600x600px~~]]

A new window will pop-out where you will be able to specify additional settings.

#'''Enable the instance'''

#Choose '''LAN''' as the source zone.

#Choose '''192.168.1.11''' as the Source IP address.

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_13_edit.png|alt=Firewall traffic rule to allow a single host on one port configuration|border|class=tlt-border|1000px]]

Scroll down and press '''‘Save & Apply’'''.

The new rules are created and enabled. To verify, go to the last page in '''‘Traffic rules’''' and verify that the rule is configured correctly and is enabled. These rules indicate that any traffic coming from host '''192.168.11~~.50~~''' in the '''LAN''' to port '''5000''' on the device will be accepted. The slider on the right side shows that the rule is enabled. Drag the second rule to be above the first rule, so the traffic from the host is matched against it and is allowed to access the device on port 5000. All other traffic from the local network coming to port 5000 on the router will be dropped because it will match the second rule. For example, if port is set to 53 (a port used by DNS), only this host would be allowed to use DNS service running on the device. Similarly, if the ports are set to 80 and 443, only that specific IP address will be able to access the WebUI of the device.

The new rules are created and enabled. To verify, go to the last page in '''‘Traffic rules’''' and verify that the rule is configured correctly and is enabled. These rules indicate that any traffic coming from host '''192.168.1.11''' in the '''LAN''' to port '''5000''' on the device will be accepted. The slider on the right side shows that the rule is enabled. Drag the second rule to be above the first rule, so the traffic from the host is matched against it and is allowed to access the device on port 5000. All other traffic from the local network coming to port 5000 on the router will be dropped because it will match the second rule. For example, if port is set to 53 (a port used by DNS), only this host would be allowed to use DNS service running on the device. Similarly, if the ports are set to 80 and 443, only that specific IP address will be able to access the WebUI of the device.

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_5-3_v1~~.png|alt=Firewall two traffic rules to allow only a single host on one port enabled|border|class=tlt-border|~~800x800px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_14.png|alt=Firewall two traffic rules to allow only a single host on one port enabled|border|class=tlt-border|1000px]]

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*In the external port field, enter ports '''80''' and '''443 (HTTP(S))''' so that only the access to the WebUI is allowed. Click '''‘Add’'''.

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_6-1_v1~~.png|alt=Firewall traffic rule to allow web access from WAN|border|class=tlt-border|~~800x800px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_15.png|alt=Firewall traffic rule to allow web access from WAN|border|class=tlt-border|1000px]]

A new window will pop-out where you will be able to specify additional settings.

#'''Enable the instance'''

#Choose '''TCP''' Protocol.

#In the Source zone choose '''wan'''.

#In the source IP enter the IP address from which you want to be able to access the WebUI.

#Choose the Destination ports which should be reachable.

#In the action field choose '''‘Accept’'''.

* In the source IP enter the IP address from which you want to be able to access the WebUI.

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_16_edit.png|alt=Firewall traffic rule to allow web access from WAN configuration|border|class=tlt-border|1000px]]

*Destination zone should be set to Device (input).

*In the destination IP address choose the IP address of the router.

*In the action field choose '''‘Accept’'''.

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_6-2_v1~~.png|alt=Firewall traffic rule to allow web access from WAN configuration|border|class=tlt-border|~~600x600px~~]]

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The new rule is created and enabled. To verify, go to the last page in '''‘Traffic rules’''' and verify that the rule is configured correctly and is enabled.

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_6-3_v1~~.png|alt=Firewall traffic rule to allow web access from WAN enabled|border|class=tlt-border|~~800x800px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_17.png|alt=Firewall traffic rule to allow web access from WAN enabled|border|class=tlt-border|1000px]]

The rule indicates that TCP traffic coming from the host '''~~138~~.~~199~~.19.~~170~~''' in the '''WAN''' to the device (router) on ports '''80''' and '''443''' will be accepted. The '''‘Accept input’''' indicates the action (accept). The slider on the right side shows that the rule is enabled.

The rule indicates that TCP traffic coming from the host '''84.xxx.xxx.xxx''' in the '''WAN''' to the device (router) on ports '''80''' and '''443''' will be accepted. The '''‘Accept input’''' indicates the action (accept). The slider on the right side shows that the rule is enabled.

In this scenario, only the host ~~138~~.~~199~~.19.~~170~~ will be able to access the WebUI of the router via it’s public IP. Similarly, if the port is set to 22 instead of 80 and 443, the remote host would be able to connect to the device via SSH, but not WebUI.

In this scenario, only the host '''84.xxx.xxx.xxx''' will be able to access the WebUI of the router via it’s public IP. Similarly, if the port is set to 22 instead of 80 and 443, the remote host would be able to connect to the device via SSH, but not WebUI.

===Block LAN network from accessing WAN on selected ports.===

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*Choose '''LAN''' as the source zone.

*Choose '''WAN''' as the destination zone.

*Click '''‘Add’'''.~~ ~~

*Click '''‘Add’'''.

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_18.png|border|class=tlt-border|1000px]]

[[File:~~Networking rutos configuration example firewall traffic rules rutos configuration traffic rule1-10 v1~~.png|border|class=tlt-border|~~800x800px~~]]

A new window will pop-out where you will be able to specify additional settings.

#'''Enable the instance'''

#Choose '''TCP+UDP''' Protocol.

#In the Source zone choose '''lan'''.

#In the destination port field enter the range of ports you wish to deny (For example, '''‘1500-1700’'''), or list specific ports by leaving spaces in-between port numbers (For example, '''‘80 443'''’).

#In the action field choose '''‘Drop’'''.

*Select '''<nowiki/>'TCP+UDP'''' as protocol.

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_19_edit.png|alt=Firewall traffic rule to block a range of ports|border|class=tlt-border|1000px]]

*In the destination port field enter the range of ports you wish to deny (For example, '''‘1500-1700’'''), or list specific ports by leaving spaces in-between port numbers (For example, '''‘80 443'''’).

*In the action field choose '''‘Drop’'''.

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_1-11_v1~~.png|alt=Firewall traffic rule to block a range of ports|border|class=tlt-border|~~600x600px~~]]

You can specify additional settings as you wish.

Scroll down and press '''‘Save & Apply’'''.

~~ ~~

The new rule is created and enabled. To verify, go to the last page in '''‘Traffic rules’''' and verify that the rule is configured correctly and is enabled.

~~You can specify additional settings as you wish. ~~

~~Scroll down and press '''‘Save & Apply’'''. ~~

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_20.png|alt=Firewall traffic rule to block a range of ports enabled|border|class=tlt-border|1000px]]

The new rule is created and enabled. To verify, go to the last page in '''‘Traffic rules’''' and verify that the rule is configured correctly and is enabled.~~ ~~

[[File:~~Networking_rutos_configuration_example_firewall_traffic_rules_1-12_v1~~.png|alt=Firewall traffic rule to block a range of ports enabled|border|class=tlt-border|~~800x800px~~]]

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* Choose '''WAN''' as destination zone.

*Click '''‘Add’'''.

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7~~-1_v1~~.png|alt=Firewall traffic rule to block host MAC on certain times|border|class=tlt-border|~~800x800px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_21.png|alt=Firewall traffic rule to block host MAC on certain times|border|class=tlt-border|1000px]]

A new window will pop-out where you will be able to specify additional settings.

*In the ~~source~~ '''~~MAC~~''' ~~address choose the~~ '''~~MAC~~''' ~~address of the host to who the rule will apply. You can enter a custom MAC address.~~

#'''Enable the instance''';

*In the action field choose '''~~‘Drop’~~'''.

#Choose Protocol: '''All''';

*On weekdays you can choose on which days the rule will apply (The device will not be able to communicate). You can choose days of the month, start and stop times, and other time settings.

#Choose Source zone: '''lan''';

#Choose Action: '''Drop''';

#Open '''Advanced Settings''' section;

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7~~-2_v1~~.png|alt=Firewall traffic rule to block host MAC on certain times configuration|border|class=tlt-border|~~600x600px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_22.png|alt=Firewall traffic rule to block host MAC on certain times configuration|border|class=tlt-border|1000px]]

In the Advanced settings we will need to add Specific Source MAC address.

#Choose Source MAC address '''Which you want to block on certain times''';

#Open '''Time Restrictions''' section;

You can specify additional settings as you wish. Scroll down and press '''‘Save & Apply’'''. The new rule is created and enabled. To verify, go to the last page in '''‘Traffic rules’''' and verify that the rule is configured correctly and is enabled.

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7~~-3_v1~~.png|alt=Firewall traffic rule to block host MAC on certain times ~~enabled~~|border|class=tlt-border|~~800x800px~~]]

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_23.png|alt=Firewall traffic rule to block host MAC on certain times configuration|border|class=tlt-border|1000px]]

In the Time Restrictions section we will need to specify the time when to block access.

#Choose Week Days;

#Choose Start Time;

#Choose Stop Time;

#Choose Start Date;

#Choose Stop Date;

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_24.png|alt=Firewall traffic rule to block host MAC on certain times configuration|border|class=tlt-border|1000px]]

This rule indicates that the PC with mac address of '''00:00:5e:00:53:af''' will not be able to send traffic to '''WAN'''. The '''~~‘Discard~~ forward’''' indicates the action (drop). The rule does not show the times at which this rule is applied, but the times can be found on the settings page ('''‘Pencil’''' button). This rule will be applied for the first time on the ~~12th~~ of ~~February~~, ~~2023~~. Then, every Monday, Tuesday, Wednesday, Thursday, and Friday, from 8 AM to 4 PM this PC will not be able to send traffic to '''WAN'''.

You can specify additional settings as you wish. Scroll down and press '''‘Save & Apply’'''.

The new rule is created and enabled. To verify, go to the last page in '''‘Traffic rules’''' and verify that the rule is configured correctly and is enabled.

[[File:Networking_rutos_configuration_example_firewall_traffic_rules_7.8_25.png|alt=Firewall traffic rule to block host MAC on certain times enabled|border|class=tlt-border|1000px]]

This rule indicates that the PC with mac address of '''00:00:5e:xx:xx:xx''' will not be able to send traffic to '''WAN'''. The '''‘Drop forward’''' indicates the action (drop). The rule does not show the times at which this rule is applied, but the times can be found on the settings page ('''‘Pencil’''' button). This rule will be applied for the first time on the 9th of August, 2024. Then, every Monday, Tuesday, Wednesday, Thursday, and Friday, from 8 AM to 4 PM this PC will not be able to send traffic to '''WAN'''.