How do I test iptables based script remotely over ssh session? How do I avoid lock outs?
iptables do not have pf like testing option. However, you can use a shell script and cron combo or just use the following syntax:
# /sbin/service iptables restart; sleep 20; /sbin/service iptables stop &
This way you can recover from bad syntax error. If you have your own script:
# /path/to/your.script.sh; sleep 20; /sbin/service iptables stop &
Above will allow you to test changes for a while and then turn off firewall completely. You will be able to login again using ssh after 20 seconds if locked out.
You should follow me on twitter here or grab rss feed to keep track of new changes.
Featured Articles:
- 30 Handy Bash Shell Aliases For Linux / Unix / Mac OS X
- Top 30 Nmap Command Examples For Sys/Network Admins
- 25 PHP Security Best Practices For Sys Admins
- 20 Linux System Monitoring Tools Every SysAdmin Should Know
- 20 Linux Server Hardening Security Tips
- Linux: 20 Iptables Examples For New SysAdmins
- Top 20 OpenSSH Server Best Security Practices
- Top 20 Nginx WebServer Best Security Practices
- 20 Examples: Make Sure Unix / Linux Configuration Files Are Free From Syntax Errors
- 15 Greatest Open Source Terminal Applications Of 2012
- My 10 UNIX Command Line Mistakes
- Top 10 Open Source Web-Based Project Management Software
- Top 5 Email Client For Linux, Mac OS X, and Windows Users
- The Novice Guide To Buying A Linux Laptop
{ 0 comments… add one now }