Why does an open and insecure port appear as filtered in Nmap when using root?Why are some ports reported by...

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Why does an open and insecure port appear as filtered in Nmap when using root?


Why are some ports reported by nmap filtered and not the others?nmap doesn't appear to list all open portsHow to “open” on a “filtered” portwhy does nmap shows same ports sometimes as filtered and sometimes as closed?Can you send a TCP packet with RST flag set using IPTABLES as a way to trick NMAP into thinking a port is closed?nmap does not report all open ports?How to tell stateful vs stateless firewall with nmap ACK scannmap raw packet privileges not working (“operation not permitted”, even as root)How does a half-open scan work in Nmap?How make a port appear open with an nmap scan






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When I'm trying to use nmap as root to scan my friend's website for security purposes. All ports appear as "filtered". Not a single port is reported to be closed or open. My friend told that he disabled his firewall before I started to make it easier. I crafted a root command to scan:



nmap -vv -dd -PE -PP -PM --system-dns --traceroute --scanflags URGACKPSHRSTSYNFIN 
--adler32 -sV --version-all -D RND:6 --version-trace --script-trace
--packet-trace --min-rate 1 -f --mtu 1400 -O -A -S 133.76.94.20
--spoof-mac 2d:34:ff:69:1a:bc --badsum --data-length 1400 --ttl 255
--reason --send-eth --send-ip -e wlan0 -sF www.site.com -Pn


First, the SYN Stealth timing keeps going 0.50% per second.



When I try to use nmap but without root, all the ports come cluttered onto my screen as open and closed instead of filtered.



Can you help explain this to me and help me craft a root command that can do the job? Thank you very much for reading.










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    When I'm trying to use nmap as root to scan my friend's website for security purposes. All ports appear as "filtered". Not a single port is reported to be closed or open. My friend told that he disabled his firewall before I started to make it easier. I crafted a root command to scan:



    nmap -vv -dd -PE -PP -PM --system-dns --traceroute --scanflags URGACKPSHRSTSYNFIN 
    --adler32 -sV --version-all -D RND:6 --version-trace --script-trace
    --packet-trace --min-rate 1 -f --mtu 1400 -O -A -S 133.76.94.20
    --spoof-mac 2d:34:ff:69:1a:bc --badsum --data-length 1400 --ttl 255
    --reason --send-eth --send-ip -e wlan0 -sF www.site.com -Pn


    First, the SYN Stealth timing keeps going 0.50% per second.



    When I try to use nmap but without root, all the ports come cluttered onto my screen as open and closed instead of filtered.



    Can you help explain this to me and help me craft a root command that can do the job? Thank you very much for reading.










    share|improve this question









    New contributor



    IRISnoir is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.
























      0












      0








      0








      When I'm trying to use nmap as root to scan my friend's website for security purposes. All ports appear as "filtered". Not a single port is reported to be closed or open. My friend told that he disabled his firewall before I started to make it easier. I crafted a root command to scan:



      nmap -vv -dd -PE -PP -PM --system-dns --traceroute --scanflags URGACKPSHRSTSYNFIN 
      --adler32 -sV --version-all -D RND:6 --version-trace --script-trace
      --packet-trace --min-rate 1 -f --mtu 1400 -O -A -S 133.76.94.20
      --spoof-mac 2d:34:ff:69:1a:bc --badsum --data-length 1400 --ttl 255
      --reason --send-eth --send-ip -e wlan0 -sF www.site.com -Pn


      First, the SYN Stealth timing keeps going 0.50% per second.



      When I try to use nmap but without root, all the ports come cluttered onto my screen as open and closed instead of filtered.



      Can you help explain this to me and help me craft a root command that can do the job? Thank you very much for reading.










      share|improve this question









      New contributor



      IRISnoir is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      When I'm trying to use nmap as root to scan my friend's website for security purposes. All ports appear as "filtered". Not a single port is reported to be closed or open. My friend told that he disabled his firewall before I started to make it easier. I crafted a root command to scan:



      nmap -vv -dd -PE -PP -PM --system-dns --traceroute --scanflags URGACKPSHRSTSYNFIN 
      --adler32 -sV --version-all -D RND:6 --version-trace --script-trace
      --packet-trace --min-rate 1 -f --mtu 1400 -O -A -S 133.76.94.20
      --spoof-mac 2d:34:ff:69:1a:bc --badsum --data-length 1400 --ttl 255
      --reason --send-eth --send-ip -e wlan0 -sF www.site.com -Pn


      First, the SYN Stealth timing keeps going 0.50% per second.



      When I try to use nmap but without root, all the ports come cluttered onto my screen as open and closed instead of filtered.



      Can you help explain this to me and help me craft a root command that can do the job? Thank you very much for reading.







      nmap






      share|improve this question









      New contributor



      IRISnoir is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.










      share|improve this question









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      IRISnoir is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.








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      edited 1 hour ago









      cas

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