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Forum Discussion
SRX5308 Load balancing with protocol binding problem
I have 3 Internet connections in load balancing mode. All outgoing traffic to a specific IP adress (mail hub) must go through specific WAN port where I have a dedicated IP address. If any other WAN p...
Hi herrmann_daniel,
A few questions:
a. What is the current firmware version of your SRX5308?
b. What load balancing method is currently selected?
Kindly try these steps:
1. On the web-GUI of the SRX5308, go to Security > Firewall > Attack Checks. Make sure the IPv4 radio button is selected by default on the upper right of the screen.
2. Uncheck "Block UDP Flood" under LAN Security Checks.
3. Click Apply.
Hope this helps. Welcome to the community :smileyhappy:
Regards,
DaneA
Netgear Community Team
Hi DaneA, a. Firmware is 4.3.3-5 b. Load balancing method is Weighted LB Block UDP flood is not checked. What is the behavior I should expect if protocol binding is configured and the internet connection on the WAN port that is programmed is down? Should packets go through any other WAN port available? Or should they just not go through? Regards, Daniel
Hi herrmann_daniel,
Thanks for your response.
With regard to your concern, since you have 3 WAN connections, let say for example WAN1 port goes down, all of the services that are binded to it will be all down and it will not switch to any other WAN ports.
Regards,
DaneA
Netgear Community Team
- So there is in fact a problem. I created a rule in Protocol Binding that says that any service from a single lan address to a single Internet address should go through a specific WAN port. I use this to send emails from our internal mail server to an Internet mail hub. This mail hub rejects all messages that do not come from a specific IP address. Checking the log of the mail hub I can see that it receives sometimes mails from one of the other WAN connections. I don't know if this happens due to connection failures on the specific WAN connection or if the Protocol Binding is not working correctly. Is there any way I can troubleshoot this further?
Hi herrmann_daniel,
Based from you have previously stated, do you have any inbound or outbound firewall rules configured on your SRX5308?
Regards,
DaneA
Netgear Community Team
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