NAME

     sc_remoted — interact with a collection of remotely controlled scamper instances

SYNOPSIS

     sc_remoted [-?46D] [-O options] [-P port] [-U directory] [-c tls-certificate] [-p tls-privatekey]

DESCRIPTION

     The sc_remoted utility provides the ability to connect to a scamper(1) instance running remotely and
     interact with it by issuing commands and receiving results in warts format.  The options are as follows:

     -?      prints a list of command line options and a synopsis of each.

     -D      causes sc_remoted to operate as a daemon.

     -4      causes sc_remoted to only listen for IPv4-based connections.

     -6      causes sc_remoted to only listen for IPv6-based connections.

     -O options
             allows the behavior of sc_remoted to be further tailored.  The current choices for this option are:
               -  allowgroup: allow members of the unix domain socket's group to access to the unix domain
                  sockets created by sc_remoted
               -  allowother: allow anyone on the system access to the unix domain sockets created by sc_remoted
               -  select: use select(2) with all sockets, rather than epoll(2) or kqueue(2)

     -P port
             specifies the port on the local host where sc_remoted should listen for incoming connections.

     -U directory
             specifies the directory on the local host where unix domain sockets corresponding to remote hosts
             should be placed.

     -c tls-certificate
             specifies the server certificate file in PEM format to advertise to remote scamper(1) instances.

     -p tls-privatekey
             specifies the private key file in PEM format that corresponds to the certificate file.  This key
             should have a passphrase.  sc_remoted will prompt for the passphrase when starting up.

EXAMPLES

     The intended use of the remote control socket built into scamper(1) is as follows.  A central server with
     IP addresses 192.0.2.1 and 2001:db8::1 runs a sc_remoted process listening on a port for remote scamper
     process, placing control sockets in a specified directory:

           sc_remoted -P 31337 -U scamper-remote-sockets

     Then, a remote host with IP address 198.51.100.55 runs scamper and connects to the remote controller:

           scamper -R 192.0.2.1:31337

     The sc_remoted process places a unix domain socket in the directory corresponding to the remote process.
     The name corresponds to the source IP address and port the remote scamper process connected to controller
     with.  If the scamper process used source port 1025, then the unix domain socket's name will be

           scamper-remote-sockets/198.51.100.55:1025

     If a second remote host with IP address 2001:db8:1234::1 runs scamper and connects to the remote
     controller:

           scamper -R [2001:db8::1]:31337

     The same sc_remoted process will place another unix domain socket in the directory corresponding to the
     remote process.  If the scamper process used source port 1026, then the unix domain socket's name will be

           scamper-remote-sockets/2001:db8:1234::1.1026

USING TRANSPORT LAYER SECURITY

     sc_remoted and scamper support the use of transport layer security (TLS) using OpenSSL to authenticate and
     encrypt communications between sc_remoted and scamper.  To use this support requires a public certificate
     signed by a certificate authority.  Scamper will verify the certificate presented by sc_remoted and
     disconnect if the certificate presented by sc_remoted cannot be validated.

     Generating a certificate that will be accepted by scamper requires you to create a certificate request and
     pass it for signing to a certificate authority.  To generate a private key in file remotepriv.pem, and a
     request to sign the key in remotereq.pem:

           openssl req -new -keyout remotepriv.pem -out remotereq.pem

     and then send the remotereq.pem file to the certificate authority for signing.  Do not send remotepriv.pem;
     that key must remain private to you.  When openssl prompts for a passphrase, choose a passphrase that is
     unique and keep the passphrase secret.  When your chosen certificate authority signs your private key, it
     will return a file which we will call remotecert.pem.  Both remotecert.pem and remotepriv.pem are required
     parameters to sc_remoted to enable TLS support:

           sc_remoted -P 31337 -U scamper-remote-sockets -c remotecert.pem -p remotepriv.pem

     and then passing the -O tls option to scamper:

           scamper -R example.com:31337 -O tls

SEE ALSO

     scamper(1), sc_attach(1), sc_wartsdump(1), warts(5), openssl(1)

AUTHORS

     sc_remoted was written by Matthew Luckie <mjl@luckie.org.nz>.