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Full Discussion: Alternate to pinging boxes
Top Forums UNIX for Advanced & Expert Users Alternate to pinging boxes Post 302150920 by bakunin on Thursday 13th of December 2007 03:40:32 AM
Old 12-13-2007
@prowla: yes, this is a good idea. Alas, it depends on the firewall not filtering telnet packages altogether (some paranoid firewall administrators will set their boxes to "stateful inspection" and filter out telnet packets regardless of the port they are directed to), which is why i was a bit more vague about it.

In case this works it is a good solution, though.

bakunin
 

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SECSH(5)							    Lsh Manuals 							  SECSH(5)

NAME
secsh - the Secure Shell protocol DESCRIPTION
secsh is a protocol suite for secure remote login and other secure network services over an insecure network. It is outlined in [SECSH]. It has three major components: The Transport layer protocol This protocol, specified in [SECSH-TLP], provides server authentication, confidentiality, and integrity with perfect forward secrecy. The User authentication protocol This protocol, specified in [SECSH-AUTH], is used to authenticate a client to a server. The Connection protocol This protocol, specified in [SECSH-CONN], multiplexes an encrypted tunnel into several logical channels. IMPLEMENTATIONS
Several implementations of the secsh protocol suite exist. The SSH2 product of SSH Communications Security Ltd., Finland <URL:http://www.ssh.fi> was the first. The secsh protocol suite has benefited a lot from their experience with their older SSH1 product, which is still in widespread use; it implements an older protocol ([SSH1]). The lsh suite of programs is a free implementation of the secsh protocol suite; it is distributed under the GNU General Public License. REFERENCES
[SECSH-ARCH] T. Ylonen, T. Kivinen, M. Saarinen, T. Rinne and S. Lehtinen, SSH Protocol Architecture, Internet draft, 6 August 1998 [SECSH-TRANS] T. Ylonen, T. Kivinen, M. Saarinen, T. Rinne and S. Lehtinen, SSH Transport Layer Protocol, Internet draft, 6 August 1998 [SECSH-AUTH] T. Ylonen, T. Kivinen, M. Saarinen, T. Rinne and S. Lehtinen, SSH Authentication Protocol, Internet draft, 6 August 1998 [SECSH-CONN] T. Ylonen, T. Kivinen, M. Saarinen, T. Rinne and S. Lehtinen SSH Connection Protocol, Internet draft, 6 August 1998 [SSH1] T. Ylonen, The SSH (Secure Shell) Remote Login Protocol, Internet draft (expired), 15 November 1995 TRADEMARKS
SSH and Secure Shell are trademarks or registered trademarks of SSH Communications Security Ltd. AUTHOR
This man-page was written by J.H.M. Dassen (Ray) <jdassen@wi.LeidenUniv.nl>. SEE ALSO
lsh(1), lshd(8), ssh2(1), sshd2(8), ssh1(1), sshd1(8) LSH
JANUARY 1999 SECSH(5)
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