SSH, The Secure Shell: The Definitive Guide, 2nd Edition

Software Inventory

Table 4-1 provides a reference to the many files and programs installed with SSH.

Table 4-1. Software inventory

Component	OpenSSH	Tectia
Server config	/etc/ssh/sshd_config	/etc/ssh2/sshd2_config
Global client config	/etc/ssh/ssh_config	/etc/ssh2/ssh2_config
Host private key	/etc/ssh/ssh_host_dsa_key	/etc/ssh2/hostkey
Host public key	/etc/ssh/ssh_host_dsa_key.pub	/etc/ssh2/hostkey.pub
Client host keys	/etc/ssh/ssh_known_hosts ~/.ssh/known_hosts	/etc/ssh2/hostkeys ~/.ssh2/hostkeys/*
Remote host keys	~/.ssh/known_hosts	~/.ssh2/knownhosts/*
libwrap control files	/etc/hosts.allow /etc/hosts.deny	/etc/hosts.allow /etc/hosts.deny
Authorization for login via public key	~/.ssh/authorized_keys	~/.ssh2/authorization
Authorization for login via trusted host	/etc/hosts.equiv /etc/shosts.equiv ~/.shosts ~/.rhosts	/etc/hosts.equiv /etc/shosts.equiv ~/.shosts ~/.rhosts
Default key pair for public-key authentication	SSH-2/RSA: ~/.ssh/id_rsa{.pub} SSH-2/DSA: ~/.ssh/id_dsa{.pub}	(No default)
Random seed	~/.ssh/prng_seed [a]	~/.ssh2/random_seed /etc/ssh2/random_seed
Commands for generating randomness	/etc/ssh/ssh_prng_cmds	-
Terminal client	ssh slogin link to ssh	ssh2 [b]
Secure file copy client	scp	scp2 b
Signer program	ssh-keysign	ssh-signer2 b
sftp2/scp2 server	sftp-server	sftp-server2 b
Authentication agent	ssh-agent	ssh-agent2 b
Key generator	ssh-keygen	ssh-keygen2 b
Key add/remove	ssh-add	ssh-add2 b
Find SSH servers	ssh-keyscan	ssh-probe2 b
Get passphrase via terminal or X	ssh-askpass x11-ssh-askpass	ssh-askpass2 b
Server program	sshd	sshd2 b
[a] Present only if using OpenSSH’s internal entropy-gathering mechanism (i.e., no /dev/random or equivalent on system). [b] A symbolic link without the “2” suffix is also installed.