一般情況我們是直接使用ssh的,這個是dropbear采用的方式;其餘的情況呢,我們采用的是telnetd,這個
1. 開啟telnet需要修改login.sh腳本。 init.d腳本
telnetd -l /bin/ash 無需密碼,直接登入
2. 開啟密碼登入需要其他的支援。login程式。
telnetd -l /bin/login.sh
修改login.sh
weedsdeMacBook-Pro:bin weeds$ cat login.sh
#!/bin/sh
# Copyright (C) 2006-2011 OpenWrt.org
cat << EOF
=== IMPORTANT ============================
Use 'passwd' to set your login password
this will disable telnet and enable SSH
------------------------------------------
EOF
exec /bin/login
設定開機預設啟動telnet (/etc/init.d/telnet)
weedsdeMacBook-Pro:files weeds$ cat telnet
#!/bin/sh /etc/rc.common
# Copyright (C) 2006-2011 OpenWrt.org
START=50
has_root_pwd() {
local pwd=$([ -f "$1" ] && cat "$1")
pwd="${pwd#*root:}"
pwd="${pwd%%:*}"
test -n "${pwd#[\!x]}"
}
get_root_home() {
local homedir=$([ -f "$1" ] && cat "$1")
homedir="${homedir#*:*:0:0:*:}"
echo "${homedir%%:*}"
}
has_ssh_pubkey() {
( /etc/init.d/dropbear enabled 2> /dev/null && grep -qs "^ssh-" /etc/dropbear/authorized_keys ) || \
( /etc/init.d/sshd enabled 2> /dev/null && grep -qs "^ssh-" "$(get_root_home /etc/passwd)"/.ssh/authorized_keys )
}
start() {
# if ( ! has_ssh_pubkey && \
# ! has_root_pwd /etc/passwd && ! has_root_pwd /etc/shadow ) || \
# ( ! /etc/init.d/dropbear enabled 2> /dev/null && ! /etc/init.d/sshd enabled 2> /dev/null );
# then
service_start /usr/sbin/telnetd -l /bin/login.sh
# fi
}
stop() {
service_stop /usr/sbin/telnetd
}