In the Qur’an Al-Karim, both men and women are commanded to control their looks and covering their private parts. The Glorified Allah commands:
“Tell the believing men to cast down their looks and guard their private parts…” (An-Noor/ The Light 24:30)
“Tell the believing women to cast down their looks and guard their private parts…” (An-Noor/ The Light 24:31)
Private part is the part between knee cap and navel (belly-button) which also surrounds the genital area. Nobody, except for the spouse of the person, is allowed to see this part. In the 31st verse of Surah An-Noor, it is prohibited for the stranger men to look at women’s bodies except for their hands, faces, ankles and feet. Touching is a further level after looking and therefore it is forbidden (haraam) for you to touch and massage women.
For the fatwa about shaking hands with the opposite sex, please follow the link: