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Redhat4forxmanager [GDM]
µÚÒ»²½£¬ÎÒÃÇÔÚLinuxϵͳÏ£¬ÐÞ¸Ä/etc/X11/xdm/XaccessÎļþ£¬ÕÒµ½ÏÂÃæµÄÓï¾ä£º
# * #any host can get a login windowÈ¥µô×îÇ°ÃæµÄ#ºÅ£¬³ÉΪ
* #any host can get a login window
µÚ¶þ²½£¬ÎÒÃÇÐÞ¸Ä/etc/X11/gdm/gdm.confÎļþ£¬ÕÒµ½ÏÂÃæµÄÓï¾ä£º
[xdmcp]
Enable£½false
½«ÆäÖеÄEnable£½false¸ÄΪEnable£½true»òEnable£½1¡£
ͬʱÎÒÃÇҪȷ±£´æÔÚÏÂÃæµÄÓï¾ä£¬ÒòΪ177¶Ë¿ÚÊÇÎÒÃÇÒªÅäÖõÄxdmcp·þÎñµÄ¼àÌý¶Ë¿Ú£¬ÎÒÃÇÔÚºóÃæÅäÖÃxmanager½«¿´¡£
Port=177
µÚÈý²½£¬ÎÒÃÇÒªÐÞ¸Ä/etc/inittabÎļþ£¬½«ÏÂÃæµÄÓï¾ä
id:3:initdefault
¸ÄΪÈçÏ£¬Èç¹ûÔ­À´¾ÍÊÇid:5:initdefault¾Í²»Óøü¸Ä¡£
ͬʱ£¬ÕÒµ½ÈçÏÂͼÎÄ×ÖËùÔڵĵط½£¬
x:5:respawn:/etc/X11/prefdm -nodaemon
½«ËüÐÞ¸ÄΪx:5:respawn:/usr/bin/gdm
µÚËIJ½£¬ÎÒÃÇÐÞ¸Ä/etc/X11/xdm/xdm-configµÄ×îºóÒ»ÐУ¬ÔÚdisplayManager.requestPort:0Ç°Ãæ¼ÓÉÏÒ»¸ö£¡ºÅ£¬½á¹ûÈçÏÂ:
!DisplayManager.requestPort: 0
µÚÎå²½£¬ÎÒÃÇÐÞ¸ÄÈ·±£/etc/X11/xdm/XserversµÄÊôÐÔΪ444£¬/etc/X11/xdm/Xsetup_0µÄÊôÐÔΪ755.
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iptables -A INPUT -p udp -s 0/0 -d 0/0 --dport 177 -j ACCEPT
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Redhat5forxmanager [GDM]
1. XDMÅäÖÃ
1.¸Ä±äÔËÐм¶±ðµ½5
´ò¿ª/etc/inittabÈ»ºóÉèÖÃinitÔËÐм¶±ð5:
id:5:initdefault:
2.´ò¿ªXDMCP
ForGDM:
open /etc/gdm/custom.conf set the options as follow:
[security]
AllowRemoteRoot=true
[xdmcp]
Enable=1
ForKDM:
´ò¿ª/usr/share/config/kdm/Xaccess£¬²¢É¾³ýÏÂÃæÒ»ÐÐÇ°ÃæµÄ"#"£º
#* #any host can get a login window ==>
* #any host can get a login window
´ò¿ª/usr/share/config/kdm/kdmrc and set the Enable entry to true in the [xdmcp] section as following.
[Xdmcp]
Enable=true
2.·À»ðǽ(TCP/UDP Ports)ÅäÖÃ
´ò¿ªUDP¶Ë¿Ú177£¬È·±£PCÄÜ·ÃÎÊRHEL5µÄ177¶Ë¿Ú.
´ò¿ªTCP¶Ë¿Ú´Ó6000~6010,È·±£RHEL5ÄÜ·ÃÎÊPCµÄTC


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opreport£¬
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/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.0.3
NETMASK=255.255.255.0
GATEWAY=192.168.0.1
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/sbin/ifdown eth0
/sbin/ifup eth0
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echo "nameserver 211.98.1.28" ......

linux ÄÚ´æ¹ÜÀíÖ®»ù´¡Æª

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Ö§³ÖtimeoutµÄconnect() / Connect with timeout
Code:
 void connect_w_to(void) {
int res;
struct sockaddr_in addr;
long arg;
fd_set myset;
struct timeval tv;
int valopt;
socklen_t ......

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