https://community.checkpoint.com/t5/Firewall-and-Security-Management/How-to-configure-IPv6-network-with-existing-Check-Point-IPV4/m-p/251395#M49210 <P>Dear Team,</P><P>My customer is operating an IPv4 network behind a Check Point cluster. One of their clients, however, is on an IPv6 network and needs to access a web application hosted within the customer's IPv4 environment.</P><P>Could you please guide me on how to enable connectivity between the IPv6 client and the IPv4-hosted application through the Check Point cluster?</P><P>We are using 6200B appliances with R81.20</P><P>Looking forward to your suggestions.</P><P>Best regards,<BR />Justin Sekar</P> Tue, 17 Jun 2025 05:23:21 GMT KSEB 2025-06-17T05:23:21Z https://community.checkpoint.com/t5/Firewall-and-Security-Management/How-to-configure-IPv6-network-with-existing-Check-Point-IPV4/m-p/251395#M49210 <P>Dear Team,</P><P>My customer is operating an IPv4 network behind a Check Point cluster. One of their clients, however, is on an IPv6 network and needs to access a web application hosted within the customer's IPv4 environment.</P><P>Could you please guide me on how to enable connectivity between the IPv6 client and the IPv4-hosted application through the Check Point cluster?</P><P>We are using 6200B appliances with R81.20</P><P>Looking forward to your suggestions.</P><P>Best regards,<BR />Justin Sekar</P> Tue, 17 Jun 2025 05:23:21 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/How-to-configure-IPv6-network-with-existing-Check-Point-IPV4/m-p/251395#M49210 KSEB 2025-06-17T05:23:21Z https://community.checkpoint.com/t5/Firewall-and-Security-Management/How-to-configure-IPv6-network-with-existing-Check-Point-IPV4/m-p/251462#M49229 <P>At a high level, this means:</P> <UL> <LI>Enabling IPv6 support on both cluster members (requires a reboot)</LI> <LI>Configuring IPv6 on the External network on the gateways (will disrupt the cluster)</LI> <LI>Configuring a NAT64 rule:&nbsp;<A href="https://sc1.checkpoint.com/documents/R81.20/WebAdminGuides/EN/CP_R81.20_SecurityManagement_AdminGuide/Content/Topics-SECMG/Working_with_NAT64_Rules.htm" target="_blank">https://sc1.checkpoint.com/documents/R81.20/WebAdminGuides/EN/CP_R81.20_SecurityManagement_AdminGuide/Content/Topics-SECMG/Working_with_NAT64_Rules.htm</A>&nbsp;</LI> </UL> <P>Needless to say, schedule a maintenance window when enabling/configuring IPv6 if it's not already done.</P> Tue, 17 Jun 2025 15:57:04 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/How-to-configure-IPv6-network-with-existing-Check-Point-IPV4/m-p/251462#M49229 PhoneBoy 2025-06-17T15:57:04Z