Enterprise /Data Center /SP /Business networking related.New Visitors are encouraged to read our wiki.Įnterprise & Business Networking topics such as:Įducational Topics & Questions are allowed with following guidelines: You created a firewall rule to allow traffic from the internal web servers to internal and external networks.Routers, Switches, Firewalls and other Data Networking infrastructure discussions welcomed. Specify firewall rule settings for reflexive NAT rule ![]() You created a firewall rule to allow traffic from the internal network to the internal web servers. Specify firewall rule settings for the loopback rule You created a firewall rule to allow traffic from external sources to the internal web servers. Specify the security settings and click Save. It uses DMZ as the destination zone when it matches a firewall rule. It identifies the zone containing the translated destination, which is DMZ in this example. Sophos Firewall looks up the matching DNAT rule for the traffic. Select the zone containing your web servers. Specify the source, destination, and services as follows: Name Select protocol IPv4 or IPv6 and select Add firewall rule. Go to Rules and policies > Firewall rules.Specify firewall rule settings for the DNAT rule The following image shows an example of how to configure the settings:Ĭreate firewall rules to allow traffic that matches the destination NAT rule, loopback rule, and reflexive NAT rule. Select a load balancing method to load balance traffic between the web servers.Select Create reflexive rule to create a source NAT rule that translates traffic from the web servers.Select Create loopback rule to translate traffic from internal users to the internal web servers. Select Create new and set Destination port to 4444.Īlternatively, you can specify Port1 in this example. Select Create new and set Destination port to 8888. In this example, specify the translation settings for incoming traffic to the web servers: Name Specify the rule name and rule position.Go to Rules and policies > NAT rules, select IPv4 or IPv6 and click Add NAT rule.Firewall rule to allow traffic from the internal web servers to any network.Firewall rule to allow traffic from an internal network to the internal web servers.Firewall rule to allow traffic from external networks to the internal web servers in DMZ.Load balancing method for the web servers.Reflexive rule to translate traffic from the web server to external and internal destinations: Web server internal IP list ( 10.145.15.42, 10.145.15.114) to Any.Loopback rule to translate traffic from internal source to internal web servers: Network LAN ( 10.145.16.10/24) to Web server public IP address (11.8.9.28) translated to Web server internal IP list ( 10.145.15.42, 10.145.15.114) with port translation from TCP 8888 to TCP 4444.Destination NAT from external source to internal web servers with port translation: Any to Web server public IP address (11.8.9.28) translated to Web server internal IP list ( 10.145.15.42, 10.145.15.114) with port translation from TCP 8888 to TCP 4444.Pre-NAT IP address of web servers: 11.8.9.28.The following network information is illustrative: ![]()
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