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snat multiple gateways

midnightSun

SNAT with multiple WAN gateways isn't working..

WAN Gateway 1 = Port3 - its public with /27 worth of aliases

WAN Gateway 2 = Port5 - its public with /28 worth of aliases 

(IP Host) SNAT with Port3 aliases work for all of the rules I've created.

(IP Host) SNAT rules for Port5 don't work at all. They use the main Port3 address no matter what I do.

Anyone know how to fix this? I'm not doing any thing exotic. Not using SD-Wan or failover...Just simple rules for in and simple rules for out.



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[edited by: Raphael Alganes at 9:57 AM (GMT -7) on 16 Oct 2024]
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  • 0 in reply to Mayur Makvana

    I thank you for the info and will try the changes.

    In the above default SNAT IPv4 you modified and created ranges for each different interface Port. Do all SNAT rules above rely on this default rule? I still don't understand why SNAT port3 alias rules work without "Override source translation" and Port5 wouldn't?    

    echo "           __     __         __         __     __    _______               ";
echo ".--------.|__|.--|  |.-----.|__|.-----.|  |--.|  |_ |     __|.--.--..-----.";
echo "|        ||  ||  _  ||     ||  ||  _  ||     ||   _||__     ||  |  ||     |";
echo "|__|__|__||__||_____||__|__||__||___  ||__|__||____||_______||_____||__|__|";
echo "                                |_____|                                    ";

    ~~~ I miss Port 17. Remember using telnet to get the Quote of the Day? Maybe I'll set one up for all the port scanners.  ~~~ 

  • 0 in reply to midnightSun

    Hello,

    The NAT policy executed from the top to down approach. If any matching NAT rule found then the traffic will passes through it. It would not go for further NAT rule check.

    While having multiple gateway and wanted to SNAT with different alias IP, we need to configure  "Override source translation (SNAT) for specific outbound interfaces"

    Mayur Makvana
    Technical Account Manager | Global Customer Experience
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