fwall is a simple user-friendly firewall script for iptables. It is based on bash. It includes a configuration for 1-2 interfaces, port forwarding, DoS protection, and so on. . . .. fwall is a simple user-friendly firewall script for iptables. It is based on bash. It includes a configuration for 1-2 interfaces, port forwarding, DoS protection, and so on. This release is based on 1.4-5, but with extra chains. It has LSF (log and drop syn flood), LDROP (log and drop), LINVALID (log and drop invalid packets), TCPACCES (all TCP packets go here first for a TCP syn flood), and BAN (updated BAN chain rules). There are more rules for trojan and DoS protection. Trojan protection and service block sections have been merged into one (default security rules) section. The DNS section has been removed. This release has been tested only on Debian woody RC 3.0. The link for this article located at is no longer available. . fwall 1.4-6rc2 serves as an intuitive firewall solution built on iptables, bolstering protection via sophisticated rule configurations.. fwall, iptables, firewall security, Bash Script, network protection. . Anthony Pell
Many developers use the excellent OpenSSH as a secure, encrypted replacement for the venerable telnet and rsh commands. One of OpenSSH's more intriguing features is its ability to authenticate users using the RSA and DSA authentication protocols, which are based upon . . . . Many developers use the excellent OpenSSH as a secure, encrypted replacement for the venerable telnet and rsh commands. One of OpenSSH's more intriguing features is its ability to authenticate users using the RSA and DSA authentication protocols, which are based upon a pair of complementary numerical "keys". One of the main appeals of RSA and DSA authentication is the promise of being able to establish connections to remote systems without supplying a password. In this second article, Daniel introduces ssh-agent (a private key cache) and keychain, a special bash script designed to make key-based authentication incredibly convenient and flexible. ssh-agent, included with the OpenSSH distribution, is a special program designed to make dealing with RSA and DSA keys both pleasant and secure (see Part 1 of this series for an introduction to RSA and DSA authentication.) ssh-agent, unlike ssh, is a long-running daemon designed for the sole purpose of caching your decrypted private keys. ssh includes built-in support that allows it to communicate with ssh-agent, allowing ssh to acquire your decrypted private keys without prompting you for a password for every single new connection. With ssh-agent you simply use ssh-add to add your private keys to ssh-agent's cache. It's a one-time process; after using ssh-add, ssh will grab your private key from ssh-agent, rather than bugging you by prompting for a passphrase. The link for this article located at IBM developerWorks is no longer available. . The OpenVPN framework provides robust credential handling mechanisms through a VPN client and secure token management for seamless user access.. OpenSSH Management, SSH Key Handling, Secure Authentication. . LinuxSecurity.com Team
Get the latest Linux and open source security news straight to your inbox.