liberar porta para poder conectar por https

Caros,
estou tentando conectar no meu apache usando a porta 443 (SSL), mas nao estou tendo exito. Fui ver se a porta estava liberada para conexões usando o comando nmpa -sS ip_da_maquina:

Starting nmap 3.81 ( http://www.insecure.org/nmap/ ) at 2005-11-16 22:23 BRST
NET: Registered protocol family 17
Interesting ports on astra.infojf.com.br (192.168.1.15):
(The 1654 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
22/tcp open ssh
53/tcp open domain
80/tcp open http
111/tcp open rpcbind
113/tcp open auth
139/tcp open netbios-ssn
445/tcp open microsoft-ds
977/tcp open unknown
10000/tcp open snet-sensor-mgmt

Nmap finished: 1 IP address (1 host up) scanned in 0.660 seconds

Não tenho firewall configurado na minha maquina, como faço para liberrar a porta 443.
Estou tendo dificuldades em conectar usando https, e por causa dessa porta estar fechada?

estou tentando fazer a mesma coisa...

ERROR
The requested URL could not be retrieved

--------------------------------------------------------------------------------

While trying to retrieve the URL: login.live.com:443

The following error was encountered:

Access Denied.
Access control configuration prevents your request from being allowed a

olha meu squid.conf

#Recommended minimum configuration:
acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl to_localhost dst 127.0.0.0/8
acl SSL_ports port 443 563
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 563 # https, snews
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl Safe_ports port 901 # swat
acl purge method PURGE
acl CONNECT method CONNECT

acl USERS_RESTRITOS proxy_auth_regex "/etc/squid/users_restritos"
acl USERS_LIBERADOS proxy_auth_regex "/etc/squid/users_liberados"
acl SITES_PERMITIDOS url_regex -i "/etc/squid/site_permitido"

# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager
http_access allow purge localhost
http_access deny purge

# Deny requests to unknown ports
http_access deny !Safe_ports

# Deny CONNECT to other than SSL ports
http_access deny CONNECT !SSL_ports

# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS

# And finally deny all other access to this proxy
http_access allow localhost
http_access allow USERS_RESTRITOS SITES_PERMITIDOS
http_access allow USERS_LIBERADOS
http_access deny all

estou fazendo com o usem o squid autenticado, junto ao sarg...
pras pessoas q deixo liberadas (http_access allow USERS_LIBERADOS) podem acessar https normal, mais as q deixo apenas com sites especificos (http_access allow USERS_RESTRITOS SITES_PERMITIDOS) nao conseguem navegar em qualquer site https sempre mensagem de erro blokeando...