- IP Scanning
IP Scanning به روشهای مختلف
میتواند صورت بگیرد:
۱- در سادهترین نوع آن، یک پکت از نوع
ICMP ECHO به یک ip خاص میفرستیم و اگر یک ICMP ECHO REPLAY به سمت ما برگشت، در
این صورت آن ip بهاصطلاح up است. برای اینکار میتوان از ابزارهای زیر استفاده
کرد:
الف) استفاده از ping موجود در سیستمعاملهای ویندوز و یونیکس
(لینوکس). به صورت زیر:
ping xxx.xxx.xxx.xxxمثلا برای 63.148.227.65 مینویسیم:
ping 63.148.227.65اگر در ویندوز این دستور را تایپ کنید و به جواب زیر برسید، یعنی آن ip فعال است:
Reply from 63.148.227.65: bytes=32 time=1402ms TTL=105و اگه به پیغام زیر رسیدید، یعنی فعال نیست:
Reply from 63.148.227.65: bytes=32 time=941ms TTL=105
Reply from 63.148.227.65: bytes=32 time=1402ms TTL=105
Reply from 63.148.227.65: bytes=32 time=941ms TTL=105
Request timed out.همان طور که میبینید با این دستور در یک لحظه فقط میشود، یک ip را تست کرد و این کار ما را کند میکند.
Request timed out.
Request timed out.
Request timed out.
Host (195.219.176.0) seems to be a subnet broadcast address ...ملاحظه میفرمایید که در بعضی موارد اسم کامپیوتر مربوط به ip هم ذکر شده است.
RTTVAR has grown to over 2.3 seconds, decreasing to 2.0
Host (195.219.176.1) appears to be up.
Host (195.219.176.3) appears to be up.
Host (195.219.176.5) appears to be up.
Host (195.219.176.7) appears to be up.
Host (195.219.176.9) appears to be up.
Host (195.219.176.11) appears to be up.
Host (195.219.176.12) appears to be up.
Host (195.219.176.13) appears to be up.
Host (195.219.176.14) appears to be up.
Host H-GVSVY95KXINRJ (195.219.176.15) appears to be up.
Host (195.219.176.16) appears to be up.
Host (195.219.176.17) appears to be up.
Host (195.219.176.18) appears to be up.
Host (195.219.176.19) appears to be up.
Host KERYASBA (195.219.176.20) appears to be up.
Host MARYAM (195.219.176.22) appears to be up.
Host (195.219.176.23) appears to be up.
Host (195.219.176.24) appears to be up.
Host FFX-L2XA0ZM87Q3 (195.219.176.25) appears to be up.
Host (195.219.176.26) appears to be up.
Host (195.219.176.27) appears to be up.
Host (195.219.176.28) appears to be up.
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