Check network traffic ( Ddos )
Các câu lệnh thường được dùng khi kiểm tra check lưu lượng request tới
netstat
command:
netstat -na
netstat -an | grep :80 | sort
netstat -an | egrep ":80|:443" | sort
To see if many active
SYNC_REC
:
netstat -n -p|grep SYN_REC | wc -l
To list out all the IP addresses sending
SYNC_REC
statuses, use the command:
netstat -n -p | grep SYN_REC | sort -u
To further list all the unique IP addresses sending
SYNC_REC
statuses, use the command:
netstat -n -p | grep SYN_REC | awk '{print $5}' | awk -F: '{print $1}'
netstat -ntu | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
netstat -anp |grep 'tcp|udp' | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
netstat -ntu | grep ESTAB | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -nr
netstat -plan|grep :80|awk {'print $5'}|cut -d: -f 1|sort|uniq -c|sort -nk 1
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