Comments on: Iptables Open FTP Port 21 and 20 http://www.cyberciti.biz/faq/iptables-open-ftp-port-21/ Every answer asks a more beautiful question. Fri, 10 Feb 2012 19:55:56 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Nickhttp://www.cyberciti.biz/faq/iptables-open-ftp-port-21/#comment-60829 Nick Tue, 19 Jul 2011 01:01:06 +0000 http://www.cyberciti.biz/faq/faq/iptables-open-ftp-port-21.php#comment-60829 The two lines you have given will work fine but the firewall will not keep track of the connection states. I think the author was trying to demonstrate the method for creating statefull rules for FTP, which has generally caused a few headaches given the way the FTP protocol is implemented. The two lines you have given will work fine but the firewall will not keep track of the connection states.

I think the author was trying to demonstrate the method for creating statefull rules for FTP, which has generally caused a few headaches given the way the FTP protocol is implemented.

]]> By: Darryl Williamshttp://www.cyberciti.biz/faq/iptables-open-ftp-port-21/#comment-56023 Darryl Williams Sun, 27 Feb 2011 15:32:33 +0000 http://www.cyberciti.biz/faq/faq/iptables-open-ftp-port-21.php#comment-56023 @Alan Mcmillan Yes seems effective. Got rid of 'connection refused' error I was getting but now connection is timing out. I am using an Archos PMA430 (Qtopia variant hacked w/ Open PMA) as server and an XP pro box running the Filezilla client. I've turned of timeout on the windows end so I'm guessing the Archos is causing the timeout. Is there a command to turn this off at the Linux end? Will post results if successful. @Alan Mcmillan

Yes seems effective. Got rid of ‘connection refused’ error I was getting but now connection is timing out. I am using an Archos PMA430 (Qtopia variant hacked w/ Open PMA) as server and an XP pro box running the Filezilla client. I’ve turned of timeout on the windows end so I’m guessing the Archos is causing the timeout. Is there a command to turn this off at the Linux end? Will post results if successful.

]]> By: Alan McMillianhttp://www.cyberciti.biz/faq/iptables-open-ftp-port-21/#comment-55842 Alan McMillian Mon, 21 Feb 2011 10:27:50 +0000 http://www.cyberciti.biz/faq/faq/iptables-open-ftp-port-21.php#comment-55842 Why are there so many rules? I simply added an input rule for port 21 and 20 $IPTABLES -A INPUT -p tcp --dport 21 -j ACCEPT $IPTABLES -A INPUT -p tcp --dport 20 -j ACCEPT Much better than 6 lines ? No ? Why are there so many rules?

I simply added an input rule for port 21 and 20

$IPTABLES -A INPUT -p tcp –dport 21 -j ACCEPT
$IPTABLES -A INPUT -p tcp –dport 20 -j ACCEPT

Much better than 6 lines ? No ?

]]> By: jxhttp://www.cyberciti.biz/faq/iptables-open-ftp-port-21/#comment-44345 jx Tue, 27 Oct 2009 18:57:49 +0000 http://www.cyberciti.biz/faq/faq/iptables-open-ftp-port-21.php#comment-44345 For Ubuntu server Sudo needs to be added to the front of these iptable and conn commands For Ubuntu server Sudo needs to be added to the front of these iptable and conn commands

]]> By: frankhttp://www.cyberciti.biz/faq/iptables-open-ftp-port-21/#comment-40231 frank Wed, 11 Feb 2009 05:13:56 +0000 http://www.cyberciti.biz/faq/faq/iptables-open-ftp-port-21.php#comment-40231 What is going to happen if I am not using this "Iptables open ftp port 21"? I have my dlink router setup with forward port 21 and seems it works fine? What is going to happen if I am not using this “Iptables open ftp port 21″?
I have my dlink router setup with forward port 21 and seems it works fine?

]]> By: Amandahttp://www.cyberciti.biz/faq/iptables-open-ftp-port-21/#comment-37537 Amanda Wed, 27 Feb 2008 20:56:23 +0000 http://www.cyberciti.biz/faq/faq/iptables-open-ftp-port-21.php#comment-37537 How do I open my FTP port 21 on my computer? What would close this and why? Amanda How do I open my FTP port 21 on my computer? What would close this and why?
Amanda

]]> By: joelhttp://www.cyberciti.biz/faq/iptables-open-ftp-port-21/#comment-20409 joel Mon, 26 Mar 2007 08:39:40 +0000 http://www.cyberciti.biz/faq/faq/iptables-open-ftp-port-21.php#comment-20409 what if the ftp server is inside the network..what would be the iptable rule(s) that should be added to forward the port 20 and 21 request from the gateway machine to the ftp server whose ip address is 192.168.x.xx?can u post the right ip table rule to do that because i am really having a hard time setting up my ftp server to run.:( what if the ftp server is inside the network..what would be the iptable rule(s) that should be added to forward the port 20 and 21 request from the gateway machine to the ftp server whose ip address is 192.168.x.xx?can u post the right ip table rule to do that because i am really having a hard time setting up my ftp server to run.:(

]]> By: sahidhttp://www.cyberciti.biz/faq/iptables-open-ftp-port-21/#comment-4213 sahid Thu, 07 Dec 2006 01:20:25 +0000 http://www.cyberciti.biz/faq/faq/iptables-open-ftp-port-21.php#comment-4213 How i will establish iptables on my linux server also i want to establish iptables againest on MAC and IPTABLES.please give me solution very son.I am not interested to give all service of all user.At that time what i will do? How i will establish iptables on my linux server also i want to establish iptables againest on MAC and IPTABLES.please give me solution very son.I am not interested to give all service of all user.At that time what i will do?

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