Firewall rules for blocking all trafic from DMZ to LAN

It doesn't seem like you do.

Man the thing I don't understand is why you've said that.

I've read the message and understood the back and forth relationship of a request and when a request passes in one way it will be rejected in the other by the rule forward been above the accept.

Like I've said in the previous message, I haven't changed the firewall configuration from the start of the thread (OK I've removed the parts specifically for logs) and my screen shot is not to give technical details, witch is on my second message where you can see my full export with the filter rules, but for proof of why I'm surprise to be able to connecte to my server with the knowledge given by CGGXANNX.

and as you've asked here is the filter export :

/ip firewall filter
add action=drop chain=forward dst-address-list=LAN in-interface="sfp2 - DMZ" log=yes log-prefix=DMZ_DROP_
add action=drop chain=input dst-address-list=LAN in-interface="sfp2 - DMZ" log=yes log-prefix=DMZ_DROP_
add action=accept chain=input comment="accept connexion from 69 for winbox" dst-port=8291 protocol=tcp src-address=192.168.69.0/24
add action=accept chain=input connection-state=established,related,untracked log-prefix=Main_
add action=drop chain=input connection-state=invalid
add action=accept chain=input in-interface-list=LAN log-prefix=ICMP_ protocol=icmp
add action=accept chain=input dst-address=127.0.0.1 log-prefix=Loop_
add action=drop chain=input in-interface-list=!LAN
add action=accept chain=forward comment="in IPsec" ipsec-policy=in,ipsec
add action=accept chain=forward comment="out IPsec" ipsec-policy=out,ipsec
add action=fasttrack-connection chain=forward connection-state=established,related hw-offload=yes log-prefix=Fasttrack_
add action=accept chain=forward connection-state=established,related,untracked log-prefix=Main_
add action=drop chain=forward connection-state=invalid
add action=drop chain=forward connection-nat-state=!dstnat connection-state=new in-interface-list=WAN

Like I've said, these rules are taken from a post (Buying - RB1100AHx4 Dude Edition - Questions about Firewall - #4 by rextended) and are in the grouped/ordered in the same way.