config BR2_PACKAGE_DROPBEAR
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bool "dropbear"
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select BR2_PACKAGE_ZLIB if !BR2_PACKAGE_DROPBEAR_SMALL
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select BR2_PACKAGE_LIBTOMCRYPT if !BR2_PACKAGE_DROPBEAR_SMALL
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help
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A small SSH 2 server designed for small memory environments.
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Note that dropbear requires a per-device unique host key. The
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key will be generated when dropbear starts, but it is not
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persistent over reboot (if you have a read-only rootfs) or
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upgrade (if you have a read-write rootfs). To make the key
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persistent, replace /etc/dropbear with a symlink to a
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directory on a persistent, writeable filesystem.
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Alternatively, mount a persistent unionfs over your root
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filesystem.
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https://matt.ucc.asn.au/dropbear/dropbear.html
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if BR2_PACKAGE_DROPBEAR
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config BR2_PACKAGE_DROPBEAR_CLIENT
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bool "client programs"
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default y
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help
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Provides the programs: dbclient, ssh
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Note that the following programs are also used server-side
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and are therefore always build regardless this setting:
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dropbear, dropbearkey, dropbearconvert, scp
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config BR2_PACKAGE_DROPBEAR_DISABLE_REVERSEDNS
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bool "disable reverse DNS lookups"
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help
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Disable reverse DNS lookups on connection. This can be handy
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on systems without working DNS, as connections otherwise
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stall until DNS times out.
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config BR2_PACKAGE_DROPBEAR_SMALL
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bool "optimize for size"
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default y
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help
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Compile dropbear for the smallest possible binary size.
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Tradeoffs are slower hashes and ciphers, and disabling of the
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blowfish cipher and zlib.
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config BR2_PACKAGE_DROPBEAR_WTMP
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bool "log dropbear access to wtmp"
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help
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Enable logging of dropbear access to wtmp. Notice that
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Buildroot does not generate wtmp by default.
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config BR2_PACKAGE_DROPBEAR_LASTLOG
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bool "log dropbear access to lastlog"
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help
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Enable logging of dropbear access to lastlog. Notice that
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Buildroot does not generate lastlog by default.
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config BR2_PACKAGE_DROPBEAR_LEGACY_CRYPTO
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bool "enable legacy crypto"
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help
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Enable legacy and possibly insecure algorithms:
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3DES encryption
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SHA1-96 message integrity
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CBC encryption mode
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DSA public keys
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Diffie-Hellman Group1 key exchange
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config BR2_PACKAGE_DROPBEAR_LOCALOPTIONS_FILE
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string "path to custom localoptions.h definitions file"
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help
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Path to a file whose contents will be appended to Dropbear
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localoptions.h. It can be used to tweak the Dropbear
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configuration.
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endif
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