/*
* If your kernel doesn\"t muck with raw packets, #define REALLY_RAW.
* This is probably only Linux.
*/
#ifdef REALLY_RAW
#define FIX(x) htons(x)
#else
#define FIX(x) (x)
#endif
int
main(int argc, char **argv)
{
int s;
char buf[1500];
struct ip *ip = (struct ip *)buf;
struct icmp *icmp = (struct icmp *)(ip + 1);
struct hostent *hp;
struct sockaddr_in dst;
int offset;
int on = 1;
Tracing route to dns-aol.ANS.NET [198.83.210.28]over a maximum of 30 hops:
1 124 ms 106 ms 105 ms 202.96.101.57 2 95 ms 95 ms 90 ms 0fa1.1-rtr1-a-hz1.zj.CN.NET [202.96.101.33] 3 100 ms 90 ms 100 ms 202.101.165.1 4 90 ms 95 ms 95 ms 202.97.18.241 5 105 ms 105 ms 100 ms 202.97.18.93 6 100 ms 99 ms 100 ms 202.97.10.37 7 135 ms 98 ms 100 ms 202.97.9.78 8 760 ms 725 ms 768 ms gip-ftworth-4-serial8-3.gip.net [204.59.178.53] 9 730 ms 750 ms 715 ms gip-ftworth-4-serial8-3.gip.net [204.59.178.53] 10 750 ms 785 ms 772 ms 144.232.11.9 11 740 ms 800 ms 735 ms sl-bb11-pen-2-0.sprintlink.NET [144.232.8.158] 12 790 ms 800 ms 735 ms sl-nap2-pen-4-0-0.sprintlink.net [144.232.5.66] 13 770 ms 800 ms 800 ms p219.t3.ans.net [192.157.69.13] 14 775 ms 820 ms 780 ms h14-1.t60-6.Reston.t3.ANS.NET [140.223.17.18] 15 780 ms 800 ms 800 ms h11-1.t60-2.Reston.t3.ANS.NET [140.223.25.34] 16 790 ms 795 ms 800 ms h14-1.t104-0.Atlanta.t3.ANS.NET [140.223.65.18] 17 * h14-1.t104-0.Atlanta.t3.ANS.NET [140.223.65.18] reports: Destination host unreachable.
Trace complete.
rusersºÍfinger
¡¡¡¡ÕâÁ½¸ö¶¼ÊÇUnixÃüÁͨ¹ýÕâÁ½¸öÃüÁÄãÄÜÊÕ¼¯µ½Ä¿±ê¼ÆËã»úÉϵÄÓйØÓû§µÄÏûÏ¢¡£
ʹÓÃrusersÃüÁ²úÉúµÄ½á¹ûÈçÏÂʾÒ⣺
gajake snark.wizard.com:ttyp1 Nov 13 15:42 7:30 (remote)
root snark.wizard.com:ttyp2 Nov 13 14:57 7:21 (remote)
robo snark.wizard.com:ttyp3 Nov 15 01:04 01 (remote)
angel111 snark.wizard.com:ttyp4 Nov14 23:09 (remote)
pippen snark.wizard.com:ttyp6 Nov 14 15:05 (remote)
root snark.wizard.com:ttyp5 Nov 13 16:03 7:52 (remote)
gajake snark.wizard.com:ttyp7 Nov 14 20:20 2:59 (remote)
dafr snark.wizard.com:ttyp15Nov 3 20:09 4:55 (remote)
dafr snark.wizard.com:ttyp1 Nov 14 06:12 19:12 (remote)
dafr snark.wizard.com:ttyp19Nov 14 06:12 19:02 (remote)
hostÃüÁî
¡¡¡¡hostÊÇÒ»¸öUnixÃüÁËüµÄ¹¦Äܺͱê×¼µÄnslookup²éѯһÑù¡£Î¨Ò»µÄÇø±ðÊÇhostÃüÁî±È½ÏÈÝÒ×Àí½â¡£hostÃüÁîµÄΣÏÕÐÔÏ൱´ó£¬ÏÂÃæ¾Ù¸öʹÓÃʵÀý£¬ÑÝʾһ´Î¶Ôbu.eduµÄhost²éѯ¡£
host -l -v -t any bu.edu
¡¡¡¡Õâ¸öÃüÁîµÄÖ´Ðнá¹ûËùµÃµ½µÄÐÅϢʮ·Ö¶à£¬°üÀ¨²Ù×÷ϵͳ£¬»úÆ÷ºÍÍøÂçµÄºÜ¶àÊý¾Ý¡£ÏÈ¿´Ò»Ï»ù±¾ÐÅÏ¢£º
Found 1 addresses for BU.EDU
Found 1 addresses for RS0.INTERNIC.NET
Found 1 addresses for SOFTWARE.BU.EDU
Found 5 addresses for RS.INTERNIC.NET
Found 1 addresses for NSEGC.BU.EDU
Trying 128.197.27.7
bu.edu 86400 IN SOA BU.EDU HOSTMASTER.BU.EDU(
961112121 ;serial (version)
900 ;refresh period
900 ;retry refresh this often
604800 ;expiration period
86400 ;minimum TTL
)
bu.edu 86400 IN NS SOFTWARE.BU.EDU
bu.edu 86400 IN NS RS.INTERNIC.NET
bu.edu 86400 IN NS NSEGC.BU.EDU
bu.edu 86400 IN A 128.197.27.7
´ÓÕâÀÎÒÃÇÂíÉϾͷ¢ÏÖһ̨EDC AlphaÔËÐеÄÊÇOSF1²Ù×÷ϵͳ¡£ÔÚ¿´¿´£º
STRAUSS.bu.edu 86400 IN HINFO PC-PENTIUM DOS/WINDOWS
BURULLUS.bu.edu 86400 IN HINFO SUN-3/50 UNIX (Ouch)
GEORGETOWN.bu.edu 86400 IN HINFO MACINTOSH MAC-OS
CHEEZWIZ.bu.edu 86400 IN HINFO SGI-INDIGO-2 UNIX
POLLUX.bu.edu 86400 IN HINFO SUN-4/20-SPARCSTATION-SLC UNIX
SFA109-PC201.bu.edu 86400 IN HINFO PC MS-DOS/WINDOWS
UH-PC002-CT.bu.edu 86400 IN HINFO PC-CLONE MS-DOS
SOFTWARE.bu.edu 86400 IN HINFO SUN-SPARCSTATION-10/30 UNIX
CABMAC.bu.edu 86400 IN HINFO MACINTOSH MAC-OS
VIDUAL.bu.edu 86400 IN HINFO SGI-INDY IRIX
KIOSK-GB.bu.edu 86400 IN HINFO GATORBOX GATORWARE
CLARINET.bu.edu 86400 IN HINFO VISUAL-X-19-TURBO X-SERVER
DUNCAN.bu.edu 86400 IN HINFO DEC-ALPHA-3000/400 OSF1
MILHOUSE.bu.edu 86400 IN HINFO VAXSTATION-II/GPX UNIX
PSY81-PC150.bu.edu 86400 IN HINFO PC WINDOWS-95
BUPHYC.bu.edu 86400 IN HINFO VAX-4000/300 OpenVMS
ÕâÖÖ·½·¨Äܳɹ¦µÄÇé¾°£º
220 xxxxxxx.com FTP server (Version wu-2.4(3) Wed Dec 14 ...) ready.
220 xxx.xxx.xxx.edu FTP server ready.
220 xx.Telcom.xxxx.EDU FTP server (Version wu-2.4(3) Tue Jun 11 ...) ready.
220 lem FTP server (SunOS 4.1) ready.
220 xxx.xxx.es FTP server (Version wu-2.4(11) Sat Apr 27 ...) ready.
220 elios FTP server (SunOS 4.1) ready
ÕâÖÖ·½·¨²»Äܳɹ¦µÄÇé¾°£º
220 wcarchive.cdrom.com FTP server (Version DG-2.0.39 Sun May 4 ...) ready.
220 xxx.xx.xxxxx.EDU Version wu-2.4.2-academ[BETA-12](1) Fri Feb 7
220 ftp Microsoft FTP Service (Version 3.0).
220 xxx FTP server (Version wu-2.4.2-academ[BETA-11](1) Tue Sep 3 ...) ready.
220 xxx.unc.edu FTP server (Version wu-2.4.2-academ[BETA-13](6) ...) ready.