The SSH-2 protocol supports the following user authentications:
* Public key authentication (DSA, RSA*, OpenPGP)
* Host-based authentication
* Password-based authentication
Note: SSH-1 supports a wider range of user authentications, i.e., the public-key, RSA only, RhostsRSA, password, Rhosts (rsh-style), TIS, and Kerberos authentications.
Every virus cannot be detected by a signature-based antivirus largely for the following reasons: * If an attacker has changed the signature of a virus, any signature-based antivirus will not
Last month, eight sites at once well-known anti-virus solutions avast! Were defaces: http://www.avast.co.za/ (mirror; date: 2010-01-22 15:06:28) http://awast.org/ (mirror; date: 2010-02-18 18:57:27) http://www.avast.de/ (mirror; date: 2010-02-18 18:58:01) http://shop.avast.de/ (mirror; date:
More advanced firewalls can be time-consuming to install, but they are not difficult to use. Take the time to fortify your defenses. It is really worthwhile.Install a Two-way Software Firewall