Proxy application gateway
(i) acts on behalf of all intranet users wanting to access interne securely
(ii)monitors all accesses to internet and allows access to only specified IP addresses
(iii) disallows use of certain protocols with security problems
(iv) disallows all internet users from accessing intranet
a. i, ii
b. i, ii, iii
c. i, ii, iii, iv
d. ii, iii, iv
(i) acts on behalf of all intranet users wanting to access interne securely
(ii)monitors all accesses to internet and allows access to only specified IP addresses
(iii) disallows use of certain protocols with security problems
(iv) disallows all internet users from accessing intranet
a. i, ii
b. i, ii, iii
c. i, ii, iii, iv
d. ii, iii, iv