/ping

Current IP address assigned to device
/ip address print
Print Interfaces
/interface print
Add and remove address
/ip address add address=172.20.182.1/16 interface=ether5
/ip address remove #num
User list
/user print
user disable
/user disable [find where name="USERNAME"]
change it to enable to reenable
create new user
/user add name=netadmin group=full password=StrongPass123
Change user password - where command
/user set [find where name="USERNAME"] password=NEWPASSWORD
Check bridges
/interface bridge port print

you can bridge the router lan ports , but traffic between devices on the same bridge does not pass through the router’s IP layer, so normal IP firewall rules won’t apply. solition , use /interface bridge filter

print interface list member
/interface list member print
print nat
/ip firewall nat print

hardening

list services

/ip service print

trusted subnets

/ip service set winbox address=192.168.209.0/24  # Restrict to a trusted subnet
/ip service disable telnet,ftp,api-ssl

/ip service set winbox address=192.168.209.0/24

do some pings

/tool fetch url="http://your-public-ip" mode=http dst-path=response.txt keep-result=yes
show arp table (to see current ips)
/ip arp print

linux file attributes sudo -l only tells your permissions check sudoers dns server ssh not required, so disable them