Ok so reading the 4th core rule book I was looking at dodge. It has Ranged as a specialization. That being said it says that you can not used anything but reaction to avoid ranged. How is this supposed to be played?

You can use the dodge skill to add dice when you use an abort action to avoid ranged attacks. SR4A pg 160 Full Defense.

Full Defense
Characters who are expecting to be attacked can spend a Complex
Action and go on full defense until their next Action Phase.
Characters who choose this option focus all of their energy on dodging,
weaving, ducking, and blocking incoming attacks. Characters on
full defense may still walk or run, and in fact may be better off moving
towards cover.
Full defense can be taken as a full dodge, full parry, or gymnastics
dodge.
Full Dodge: Character on full defense may add their Dodge
skill to their dice pool when defending against incoming attacks.
So a character on full defense against a ranged attack rolls Dodge +
Reaction, whereas a character on full defense against a melee attack
could roll Dodge + Dodge + Reaction, or melee combat skill +
Dodge + Reaction. Full dodge may be used against both ranged and
melee attacks.