scanning and security

scanning and security

Post by highlande » Mon, 11 Dec 2000 06:53:03

    Does it exist scaner under linux which can scan many adreses
looking for a special one (for example with opened port 23) ?
What about scaners using SYNC method (not fully connecting)?
How can i secure before such scaner?
Are there any logs? What can i do?
Can I identify IP which scanned me?



scanning and security

Post by Christian Wen » Mon, 11 Dec 2000 20:54:43

nmap is a portscanner under linux.
you can scan your host with <nmap localhost> and you will see all
open ports. there are different scan-modi and also SYNC as far as i
know ... have a look <man nmap> !!!
if you scan your host have a look at </var/log/messages> ...

greetings -- chris


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