5 FAQ tagged "iptables command"

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How To Reset Linux Firewall Automatically While Testing Configuration With Remote Server Over SSH Session :
I’d like to tell my Linux iptables firewall to flush out the current configuration every 5 minutes. This will help when I’m testing a new rules and configuration options. Some time I find myself locked out of my own remote server. How do I reset Linux firewall automatically without issuing hard reboot?
CentOS / Red Hat Linux Install VSFTPD FTP Server :
How do I configure and install an FTP server in CentOS / RHEL 5 / Fedora Linux server?
ORA-12154: TNS:could not resolve the connect identifier specified Error and Solution :
Q. My Oracle XE installation was working fine, but today I’m getting an error - which read as follows under Ubuntu Linux :
ORA-12154: TNS:could not resolve the connect identifier specified
How do I fix this problem without reinstalling Oracle?
Linux Share a Dial Up Internet Connection :
Q. My modem is connected to CentOS Linux server. I’m using wvdial to connect to my ISP; I’d like to connect my laptop via same modem. How do I share a dial up Internet account?
Linux Firewall: Display Status and Rules of Iptables Firewall :
Q. How do I display / list all rules in the selected chain? How do I find out which rules are active? What is blocked and opened with my firewall?
A. To List all rules in the selected chain use the -L option. If no chain is selected, all chains are listed. As [...]

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