無くなってしまったものは仕方がないので

man やオフィシャルなマニュアルを読みながら作業することにします。

> vi ~/.cshrc
alias jpwhois   whois -h whois.jprs.jp
alias lang_jp   setenv LANG ja_JP.eucJP
alias lang_c    setenv LANG C
set prompt = "[%n@%m] %B%~%b%# "
> source ~/.cshrc
$ vi /root/.cshrc
#set prompt = "`/bin/hostname -s`# "
set prompt = "[%Broot@%m%b] %B%~%b%# "
$ source /root/.cshrc

http://sakura.take-labo.jp/freebsd/i386-system.html

$ less /etc/defaults/rc.conf
### Network Time Services options: ###
timed_enable="NO"               # Run the time daemon (or NO).
timed_flags=""                  # Flags to timed (if enabled).
ntpdate_enable="NO"             # Run ntpdate to sync time on boot (or NO).
ntpdate_program="/usr/sbin/ntpdate"     # path to ntpdate, if you want a differe
nt one.
ntpdate_flags="-b"              # Flags to ntpdate (if enabled).
ntpd_enable="NO"                # Run ntpd Network Time Protocol (or NO).
ntpd_program="/usr/sbin/ntpd"   # path to ntpd, if you want a different one.
ntpd_sync_on_start="NO"         # Sync time on ntpd startup, even if offset is h
igh
ntpd_flags="-p /var/run/ntpd.pid -f /var/db/ntpd.drift"
                                # Flags to ntpd (if enabled).
$ vi /etc/rc.conf
ntpdate_enable="YES"
ntpdate_flags="-sbv ntp.jst.mfeed.ad.jp"
ntpd_enable="YES"
ntpd_flags="-p /var/run/ntpd.pid -f /var/db/ntpd.drift"
$ vi /etc/ntp.conf
pidfile		/var/run/ntpd.pid
logfile		/var/log/ntp.log
logconfig	=syncstatus +sysevents
driftfile	/var/db/ntpd.drift

server 210.173.160.27 minpoll 6 maxpoll 10
server 210.173.160.57 minpoll 6 maxpoll 10
server 210.173.160.87 minpoll 6 maxpoll 10

restrict default ignore
restrict 127.0.0.1
restrict 192.168.0.0 mask 255.255.0.0 notrust nomodify notrap nopeer
restrict 210.173.160.27 nomodify notrap noquery
restrict 210.173.160.57 nomodify notrap noquery
restrict 210.173.160.87 nomodify notrap noquery

http://www.jp.freebsd.org/cgi/mroff.cgi?subdir=man&lc=1&cmd=&man=ntpdate&dir=jpman-6.0.0%2Fman§=8
http://www.jp.freebsd.org/cgi/mroff.cgi?subdir=man&lc=1&cmd=&man=ntpd&dir=jpman-6.0.0%2Fman§=8
http://www.jp.freebsd.org/cgi/mroff.cgi?subdir=man&lc=1&cmd=&man=ntp.conf&dir=jpman-6.0.0%2Fman§=5
NTP/推奨公開サーバ - wiki@nothing

$ vi /etc/mail/aliases
root:  user
$ newaliases
Port 12345 ( 設定する際はランダムに )
Protocol 2
AddressFamily inet
ListenAddress 192.168.1.2

#HostKey /etc/ssh/ssh_host_key
#HostKey /etc/ssh/ssh_host_dsa_key

#KeyRegenerationInterval 1h
ServerKeyBits 1024

#SyslogFacility AUTH
#LogLevel INFO

LoginGraceTime 1m
PermitRootLogin no
StrictModes yes
MaxAuthTries 3

RSAAuthentication no
PubkeyAuthentication yes
#AuthorizedKeysFile     .ssh/authorized_keys

RhostsRSAAuthentication no
HostbasedAuthentication no
#IgnoreUserKnownHosts no
#IgnoreRhosts yes

PasswordAuthentication no
PermitEmptyPasswords no

ChallengeResponseAuthentication no

KerberosAuthentication no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes
#KerberosGetAFSToken no

GSSAPIAuthentication no
#GSSAPICleanupCredentials yes

#UsePAM yes

#AllowTcpForwarding yes
#GatewayPorts no
X11Forwarding no
#X11DisplayOffset 10
#X11UseLocalhost yes
#PrintMotd yes
#PrintLastLog yes
#TCPKeepAlive yes
UseLogin no
#UsePrivilegeSeparation yes
#PermitUserEnvironment no
#Compression delayed
#ClientAliveInterval 0
#ClientAliveCountMax 3
#UseDNS yes
#PidFile /var/run/sshd.pid
#MaxStartups 10

#Banner /some/path

Subsystem       sftp    /usr/libexec/sftp-server

AllowUsers      user

http://www.unixuser.org/~euske/doc/openssh/jman/


とりあえずこんな感じでしょうか。
SSH はもう少し詰めてみたい所です。