1.修改/etc/gdm/custom.conf文件

[daemon]

[security]

DisallowTCP=false

AllowRemoteRoot=true

[xdmcp]

Enable=true

[greeter]

[chooser]

[debug]

2.修改/etc/sysconfig/iptables文件

# Firewall configuration written by system-config-firewall

# Manual customization of this file is not recommended.

*filter

:INPUT ACCEPT [0:0]

:FORWARD ACCEPT [0:0]

:OUTPUT ACCEPT [0:0]

-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

-A INPUT -p icmp -j ACCEPT

-A INPUT -i lo -j ACCEPT

-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT

-A INPUT -m state --state NEW -m udp -p udp --dport 177 -j ACCEPT

-A INPUT -m state --state NEW -m tcp -p tcp --dport 177 -j ACCEPT

-A INPUT -m state --state NEW -m tcp -p tcp --dport 6000:6010 -j ACCEPT

-A INPUT -j REJECT --reject-with icmp-host-prohibited

-A FORWARD -j REJECT --reject-with icmp-host-prohibited

COMMIT

3.重启防火墙

[root@localhost init.d]# ./iptables restart

windows 下使用xmanager访问CentOS6.5