ftp port 21 and 20 not showing












0















I can't get ftp working on one of my servers. It's Ubuntu 14.04 that is the trouble. The same iptable instructions works on my Ubuntu 16.04 server.



Even when I set INPUT, OUTPUT, and FORWARD to ACCEPT at the top I can't see port 20 or 21. Port 22 is fine. vsftpd is running.



Here is my current iptables rules where I've changed everything to accept.



*filter


Allow all outgoing, but drop incoming and forwarding packets by default



:INPUT ACCEPT
:FORWARD ACCEPT
:OUTPUT ACCEPT



Custom per-protocol chains



:UDP - [0:0]
:TCP - [0:0]
:ICMP - [0:0]



Default policy



-P INPUT ACCEPT
-P OUTPUT ACCEPT



if a matched ipset then drop put this first



-A INPUT -m set --match-set ScottHillBlocks src -j DROP
-A INPUT -m set --match-set ScottHillAddr src -j DROP



Acceptable TCP traffic



-A INPUT -p tcp --dport 22 -j ACCEPT
-A OUTPUT -p tcp --sport 22 -m conntrack --ctstate ESTABLISHED -j ACCEPT



FTP ports 20 and 21 active



-A INPUT -p tcp -m tcp --dport 21 -m conntrack --ctstate NEW,ESTABLISHED,NEW -j ACCEPT
-A OUTPUT -p tcp -m tcp --dport 21 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT



-A INPUT -p tcp -m tcp --dport 20 -m conntrack --ctstate NEW,ESTABLISHED,RELATED -j ACCEPT
-A OUTPUT -p tcp -m tcp --dport 20 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT










share|improve this question



























    0















    I can't get ftp working on one of my servers. It's Ubuntu 14.04 that is the trouble. The same iptable instructions works on my Ubuntu 16.04 server.



    Even when I set INPUT, OUTPUT, and FORWARD to ACCEPT at the top I can't see port 20 or 21. Port 22 is fine. vsftpd is running.



    Here is my current iptables rules where I've changed everything to accept.



    *filter


    Allow all outgoing, but drop incoming and forwarding packets by default



    :INPUT ACCEPT
    :FORWARD ACCEPT
    :OUTPUT ACCEPT



    Custom per-protocol chains



    :UDP - [0:0]
    :TCP - [0:0]
    :ICMP - [0:0]



    Default policy



    -P INPUT ACCEPT
    -P OUTPUT ACCEPT



    if a matched ipset then drop put this first



    -A INPUT -m set --match-set ScottHillBlocks src -j DROP
    -A INPUT -m set --match-set ScottHillAddr src -j DROP



    Acceptable TCP traffic



    -A INPUT -p tcp --dport 22 -j ACCEPT
    -A OUTPUT -p tcp --sport 22 -m conntrack --ctstate ESTABLISHED -j ACCEPT



    FTP ports 20 and 21 active



    -A INPUT -p tcp -m tcp --dport 21 -m conntrack --ctstate NEW,ESTABLISHED,NEW -j ACCEPT
    -A OUTPUT -p tcp -m tcp --dport 21 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT



    -A INPUT -p tcp -m tcp --dport 20 -m conntrack --ctstate NEW,ESTABLISHED,RELATED -j ACCEPT
    -A OUTPUT -p tcp -m tcp --dport 20 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT










    share|improve this question

























      0












      0








      0








      I can't get ftp working on one of my servers. It's Ubuntu 14.04 that is the trouble. The same iptable instructions works on my Ubuntu 16.04 server.



      Even when I set INPUT, OUTPUT, and FORWARD to ACCEPT at the top I can't see port 20 or 21. Port 22 is fine. vsftpd is running.



      Here is my current iptables rules where I've changed everything to accept.



      *filter


      Allow all outgoing, but drop incoming and forwarding packets by default



      :INPUT ACCEPT
      :FORWARD ACCEPT
      :OUTPUT ACCEPT



      Custom per-protocol chains



      :UDP - [0:0]
      :TCP - [0:0]
      :ICMP - [0:0]



      Default policy



      -P INPUT ACCEPT
      -P OUTPUT ACCEPT



      if a matched ipset then drop put this first



      -A INPUT -m set --match-set ScottHillBlocks src -j DROP
      -A INPUT -m set --match-set ScottHillAddr src -j DROP



      Acceptable TCP traffic



      -A INPUT -p tcp --dport 22 -j ACCEPT
      -A OUTPUT -p tcp --sport 22 -m conntrack --ctstate ESTABLISHED -j ACCEPT



      FTP ports 20 and 21 active



      -A INPUT -p tcp -m tcp --dport 21 -m conntrack --ctstate NEW,ESTABLISHED,NEW -j ACCEPT
      -A OUTPUT -p tcp -m tcp --dport 21 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT



      -A INPUT -p tcp -m tcp --dport 20 -m conntrack --ctstate NEW,ESTABLISHED,RELATED -j ACCEPT
      -A OUTPUT -p tcp -m tcp --dport 20 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT










      share|improve this question














      I can't get ftp working on one of my servers. It's Ubuntu 14.04 that is the trouble. The same iptable instructions works on my Ubuntu 16.04 server.



      Even when I set INPUT, OUTPUT, and FORWARD to ACCEPT at the top I can't see port 20 or 21. Port 22 is fine. vsftpd is running.



      Here is my current iptables rules where I've changed everything to accept.



      *filter


      Allow all outgoing, but drop incoming and forwarding packets by default



      :INPUT ACCEPT
      :FORWARD ACCEPT
      :OUTPUT ACCEPT



      Custom per-protocol chains



      :UDP - [0:0]
      :TCP - [0:0]
      :ICMP - [0:0]



      Default policy



      -P INPUT ACCEPT
      -P OUTPUT ACCEPT



      if a matched ipset then drop put this first



      -A INPUT -m set --match-set ScottHillBlocks src -j DROP
      -A INPUT -m set --match-set ScottHillAddr src -j DROP



      Acceptable TCP traffic



      -A INPUT -p tcp --dport 22 -j ACCEPT
      -A OUTPUT -p tcp --sport 22 -m conntrack --ctstate ESTABLISHED -j ACCEPT



      FTP ports 20 and 21 active



      -A INPUT -p tcp -m tcp --dport 21 -m conntrack --ctstate NEW,ESTABLISHED,NEW -j ACCEPT
      -A OUTPUT -p tcp -m tcp --dport 21 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT



      -A INPUT -p tcp -m tcp --dport 20 -m conntrack --ctstate NEW,ESTABLISHED,RELATED -j ACCEPT
      -A OUTPUT -p tcp -m tcp --dport 20 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT







      14.04 networking iptables ftp






      share|improve this question













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      asked 4 hours ago









      Bob BruniusBob Brunius

      191229




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