Firewall - how is this not blocking all access to the Router

RouterOS Beginner Basics
1

Here is my new config. Why is the first line of this config not blocking all access to the router? I can telnet, ping, etc. to the router just as if the line was not there.

/ip firewall filter
add action=drop chain=input comment=“” connection-type=“” disabled=no
add action=accept chain=input comment=“” disabled=no src-address-list=“Internal Network”
add action=accept chain=input comment=“default configuration” disabled=no protocol=icmp
add action=accept chain=input comment=“default configuration” connection-state=established disabled=no in-interface=ether1-gateway
add action=accept chain=input comment=“default configuration” connection-state=related disabled=no in-interface=ether1-gateway
add action=log chain=input comment=“” disabled=no in-interface=ether1-gateway log-prefix=“”
add action=drop chain=input comment=“default configuration” disabled=no in-interface=ether1-gateway

Thank you in advance

2

When I try

/ip firewall filter
add action=drop chain=input comment="" connection-type="" disabled=no

I get this:

ambiguous value of type, more than one possible value matches input

To correct it:

/ip firewall filter
unset X connection-type

When you do this, get your null modem cable out. The serial port is all that is left.