Security ratings:
-1.9 and above: you can enter all space freely
-2.4 and above: you can enter all but 1.0
-2.9 and above: you can enter all but 0.9 and above
-3.4 and above: you can enter all but 0.8 and above
-3.9 and above: you can enter all but 0.7 and above
-4.4 and above: you can enter all but 0.6 and above
-4.5 and below: you cannot enter secure space without being fired upon by the navy/concord

RATS!!
Damage to Tank for:
Guristas - Kin/Therm
Serpentis - Thermal / Kinetic (55-45)
Blood Raider - EM/Therm
Sansha's Nation - EM / Therm
Angel Cartel - Exp/Kin/ Therm
Minmatar Fleet - Thermal / Explosive
Amarr Navy - EM / Thermal
Caldari - Kinetic/Thermal
Drones- Exp/Kin
EOM - Kin/Ther
Mercinaries - Th/Kin
Mordus - Kin/EM

Damage to Deal (Fire): Primary/Secondary
Guristas - Kin/Therm
Serpentis - Kin/Therm
Mordus - Kin/EM
Blood Raiders- EM/Therm
Sansha - EM/Therm
Angel - Exp/Kin
Mercenary - Therm/Kin
Rogue Drones - EM/Therm
EOM - Kin/Therm