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http://blog.csdn.net/manio/archive/2006/10/13/1333202.aspx
/*
server
*/
#include
<
stdio.h
>
#include
<
sys
/
types.h
>
#include
<
netinet
/
in
.h
>
#include
<
sys
/
socket.h
>
#include
<
netdb.h
>
#include
<
unistd.h
>
#include
<
string
.h
>
#include
<
arpa
/
inet.h
>
#define
PORT 8848
#define
BACKLOG 1
main()
{
int
listenfd,connectfd;
struct
sockaddr_in server;
struct
sockaddr_in client;
int
sin_size;
if
(( listenfd
=
socket(AF_INET, SOCK_STREAM,
0
))
==
-
1
)
{
perror(
"
Creating socket failed.
"
);
return
0
;
}
int
opt
=
SO_REUSEADDR;
setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR,
&
opt,
sizeof
(opt));
bzero(
&
server,
sizeof
(server));
server.sin_family
=
AF_INET;
server.sin_port
=
htons(PORT);
server.sin_addr.s_addr
=
htonl(INADDR_ANY);
printf(
"
binding...
"
);
if
(bind(listenfd, (
struct
sockaddr
*
)
&
server,
sizeof
(
struct
sockaddr))
==
-
1
) {
perror(
"
Bind error
"
);
ret
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1.sXid http://os.51cto.com/art/200907/134874.htm
ÏÂÔØµØÖ·:http://freshmeat.net/projects/sxid/
2. LSAT
ÏÂÔØµØÖ·:http://usat.sourceforge.net/
3.portsentry
ÏÂÔØµØÖ·:http://sourceforge.net/projects/sentrytools/
4. fail2ban
http://www.fail2ban.org/
5.lids
http://www.lids.org/
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