Re: port based routing

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On 2020-08-02 16:03, Gordon Messmer wrote:
On 8/2/20 12:27 PM, Jeffrey Ross wrote:
I'm looking to make routing decisions based upon either the source or destination TCP port and interface/destination IP, in the Cisco world I'd do this via policy based routing.


The same is true with iptables and firewalld.  The article you linked is mostly usable.  The only difference is that instead of using "service iptables save", you'll need to specify an iptables rule "directly" to firewalld:

  firewall-cmd --permanent --direct --add-rule ipv4 raw OUTPUT 100 -p tcp -m tcp --dport 22 -j MARK –set-mark 0x1

Hi Gordon,

Would you mind taking apart all the switches in the
above run string and expaining each of them?

Many thanks,
-T

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