dc9e169181
spiped (pronounced "ess-pipe-dee") is a utility for creating symmetrically
encrypted and authenticated pipes between socket addresses, so that one may
connect to one address (e.g., a UNIX socket on localhost) and transparently
have a connection established to another address (e.g., a UNIX socket on a
different system). This is similar to 'ssh -L' functionality, but does not
use SSH and requires a pre-shared symmetric key.
Note that spiped:
1. Requires a strong key file: The file specified via the -k option should
have at least 256 bits of entropy. ('dd if=/dev/urandom bs=32 count=1' is
your friend.)
2. Does not provide any protection against information leakage via packet
timing: Running telnet over spiped will protect a password from being directly
read from the network, but will not obscure the typing rhythm.
3. Can significantly increase bandwidth usage for interactive sessions: It
sends data in packets of 1024 bytes, and pads smaller messages up to this
length, so a 1 byte write could be expanded to 1024 bytes if it cannot be
coalesced with adjacent bytes.
4. Uses a symmetric key -- so anyone who can connect to an spiped "server" is
also able to impersonate it.
20 lines
1.2 KiB
Text
20 lines
1.2 KiB
Text
spiped (pronounced "ess-pipe-dee") is a utility for creating symmetrically
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|
encrypted and authenticated pipes between socket addresses, so that one may
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|
connect to one address (e.g., a UNIX socket on localhost) and transparently
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|
have a connection established to another address (e.g., a UNIX socket on a
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|
different system). This is similar to 'ssh -L' functionality, but does not
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use SSH and requires a pre-shared symmetric key.
|
|
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Note that spiped:
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1. Requires a strong key file: The file specified via the -k option should
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have at least 256 bits of entropy. ('dd if=/dev/urandom bs=32 count=1' is
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your friend.)
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|
2. Does not provide any protection against information leakage via packet
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timing: Running telnet over spiped will protect a password from being directly
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read from the network, but will not obscure the typing rhythm.
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3. Can significantly increase bandwidth usage for interactive sessions: It
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sends data in packets of 1024 bytes, and pads smaller messages up to this
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|
length, so a 1 byte write could be expanded to 1024 bytes if it cannot be
|
|
coalesced with adjacent bytes.
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|
4. Uses a symmetric key -- so anyone who can connect to an spiped "server" is
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also able to impersonate it.
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