complete firewall rules

RouterOS General
1

Does anyone have an idea how to make this firewall more complete.
RouterOS 6.43.4 RB100AHx4

Thanks for your help

/ip firewall address-list
add address=192.168.125.0/24 list="Nat masquerading"
add address=192.168.125.0/24 list=support
add address=0.0.0.0/8 comment="Self-Identification [RFC 3330]" list=bogons
add address=10.0.0.0/8 comment="Private[RFC 1918] - CLASS A # Check if you need this subnet before enable it" list=bogons
add address=127.0.0.0/8 comment="Loopback [RFC 3330]" list=bogons
add address=169.254.0.0/16 comment="Link Local [RFC 3330]" list=bogons
add address=172.16.0.0/12 comment="Private[RFC 1918] - CLASS B # Check if you need this subnet before enable it" list=bogons
add address=192.168.0.0/16 comment="Private[RFC 1918] - CLASS C # Check if you need this subnet before enable it" disabled=yes list=bogons
add address=192.0.2.0/24 comment="Reserved - IANA - TestNet1" list=bogons
add address=192.88.99.0/24 comment="6to4 Relay Anycast [RFC 3068]" list=bogons
add address=198.18.0.0/15 comment="NIDB Testing" list=bogons
add address=198.51.100.0/24 comment="Reserved - IANA - TestNet2" list=bogons
add address=203.0.113.0/24 comment="Reserved - IANA - TestNet3" list=bogons
add address=224.0.0.0/4 comment="MC, Class D, IANA # Check if you need this subnet before enable it" list=bogons
add address=192.168.125.1-192.168.125.4 list=routers
/ip firewall filter
add action=add-src-to-address-list address-list=Port_Scanner address-list-timeout=1w chain=input comment="PORT SCANNER DETECT" protocol=tcp psd=21,3s,3,1
add action=add-src-to-address-list address-list=Syn_Flooder address-list-timeout=30m chain=input comment="Add Syn Flood IP to the list" connection-limit=30,32 protocol=tcp tcp-flags=syn
add action=drop chain=input comment="Drop to syn flood list" src-address-list=Syn_Flooder
add action=drop chain=input dst-address-list=routers dst-port=21,22,23,8291 protocol=tcp src-address-list=!support
add action=jump chain=input comment="Jump for icmp input flow" jump-target=ICMP protocol=icmp
add action=drop chain=input comment="Drop to port scan list" src-address-list=Port_Scanner
add action=jump chain=input comment="OUTSIDE ---> ROUTER" in-interface=bridge-public jump-target=OUTSIDE-TO-ROUTER
add action=accept chain=OUTSIDE-TO-ROUTER dst-port=1194 protocol=tcp
add action=accept chain=OUTSIDE-TO-ROUTER dst-port=500,4500 protocol=udp
add action=accept chain=OUTSIDE-TO-ROUTER dst-port=1701 ipsec-policy=in,ipsec protocol=udp
add action=accept chain=OUTSIDE-TO-ROUTER protocol=ipsec-esp
add action=accept chain=OUTSIDE-TO-ROUTER dst-port=1723 protocol=tcp
add action=accept chain=OUTSIDE-TO-ROUTER protocol=gre
add action=return chain=OUTSIDE-TO-ROUTER
add action=jump chain=output comment="OUTSIDE <--- ROUTER" jump-target=ROUTER-TO-OUTSIDE out-interface=bridge-public
add action=return chain=ROUTER-TO-OUTSIDE
add action=jump chain=input comment="INSIDE ---> ROUTER" in-interface=bridge-local jump-target=INSIDE-TO-ROUTER
add action=accept chain=INSIDE-TO-ROUTER
add action=jump chain=output comment="INSIDE <--- ROUTER" jump-target=ROUTER-TO-INSIDE out-interface=bridge-local
add action=accept chain=ROUTER-TO-INSIDE
add action=jump chain=forward comment="OUTSIDE ---> INSIDE" in-interface=bridge-public jump-target=OUTSIDE-TO-INSIDE out-interface=bridge-local
add action=accept chain=OUTSIDE-TO-INSIDE connection-nat-state=dstnat connection-state=new
add action=return chain=OUTSIDE-TO-INSIDE
add action=jump chain=forward comment="OUTSIDE <--- INSIDE" in-interface=bridge-local jump-target=INSIDE-TO-OUTSIDE out-interface=bridge-public
add action=accept chain=INSIDE-TO-OUTSIDE
add action=jump chain=input comment="VPN ---> ROUTER" jump-target=VPN-TO-ROUTER src-address-list=VPN
add action=return chain=VPN-TO-ROUTER
add action=jump chain=output comment="VPN <--- ROUTER" dst-address-list=VPN jump-target=ROUTER-TO-VPN
add action=return chain=ROUTER-TO-VPN
add action=jump chain=forward comment="VPN ---> INSIDE" jump-target=VPN-TO-INSIDE out-interface=bridge-local src-address-list=VPN
add action=return chain=VPN-TO-INSIDE
add action=jump chain=forward comment="VPN <--- INSIDE" dst-address-list=VPN in-interface=bridge-local jump-target=INSIDE-TO-VPN
add action=accept chain=INSIDE-TO-VPN
add action=jump chain=forward comment="VPN ---> OUTSIDE" jump-target=VPN-TO-OUTSIDE out-interface=bridge-public src-address-list=VPN
add action=reject chain=VPN-TO-OUTSIDE
add action=jump chain=forward comment="VPN <--- OUTSIDE" dst-address-list=VPN in-interface=bridge-public jump-target=OUTSIDE-TO-VPN
add action=reject chain=OUTSIDE-TO-VPN
add action=accept chain=input comment="INPUT: Default policy" connection-state=established,related
add action=drop chain=input connection-state=invalid
add action=accept chain=input protocol=icmp
add action=drop chain=input
add action=fasttrack-connection chain=forward comment="FORWARD: Default policy" connection-state=established,related
add action=accept chain=forward connection-state=established,related
add action=drop chain=forward connection-state=invalid
add action=drop chain=forward
add action=accept chain=output comment="OUTPUT: Default policy"
/ip firewall nat
add action=masquerade chain=srcnat out-interface-list=public src-address-list="Nat masquerading"
2

Nowbody knows?

3

Unless you want to log a specific event occurring, simply default drop everything. Then add in what you need. An example that is easy to follow:


/ip firewall filter
add chain=input action=accept connection-state=established,related comment="Allow established related"
add chain=input action=accept in-interface=bridge-LAN comment="Allow LAN"
add chain=input action=add-src-to-address-list address-list="port scanners" address-list-timeout=2w protocol=tcp psd=21,3s,3,1 comment="Port scanners"
add chain=input action=accept protocol=icmp comment="Allow Ping"
add action=drop chain=input comment="Drop all other input"

add chain=forward action=accept connection-state=established,related comment="Allow established related"
add chain=forward action=accept connection-state=new in-interface=bridge-LAN comment="Allow LAN"
add chain=forward action=accept connection-nat-state=dstnat in-interface=ether1 comment="Allow Port forwards"
add chain=forward action=drop comment="Drop all other forward"

/ip firewall nat
add action=masquerade chain=srcnat out-interface=ether1 comment="Default masq"
add action=dst-nat chain=dstnat dst-port=123 in-interface=ether1 protocol=tcp to-addresses=1.2.3.4 to-ports=123 comment="Example Port forward"
4

Thanks PCUNITE i appreciate that.