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36 lines
1.5 KiB
Groff
36 lines
1.5 KiB
Groff
--- nc.1.orig Fri Oct 19 07:42:18 2001
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+++ nc.1 Fri Oct 19 07:52:16 2001
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@@ -33,7 +33,8 @@
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.Nd "arbitrary TCP and UDP connections and listens"
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.Sh SYNOPSIS
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.Nm nc
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-.Op Fl 46hklnrtuvzU
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+.Op Fl 46EhklnrtuvzU
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+.Op Fl e Ar IPsec policy
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.Op Fl i Ar interval
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.Op Fl p Ar source port
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.Op Fl s Ar source ip address
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@@ -90,6 +91,12 @@
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Prints out
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.Nm
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help.
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+.It Fl E
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+Shortcut for "-e 'in ipsec esp/transport//require' -e 'out ipsec esp/transport//require'", which enables IPsec ESP transport mode in both directions.
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+.It Fl e
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+If IPsec support is available, then one can specify the IPsec policies to be used using the syntax described in
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+.Xr ipsec_set_policy 3 .
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+This flag can be specified up to two times, as typically one policy for each direction is needed.
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.It Fl i Ar interval
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Specifies a delay time interval between lines of text sent and received.
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Also causes a delay time between connections to multiple ports.
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@@ -149,6 +156,10 @@
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.It Li "nc -s 10.1.2.3 example.host 42"
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Open a TCP connection to port 42 of example.host using 10.1.2.3 as the
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IP for the local end of the connection.
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+.It Li "nc -E example.host 42"
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+Open a TCP connection to port 42 of example.host using IPsec ESP for incoming and outgoing traffic.
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+.It Li "nc -e 'out ipsec esp/transport//require' example.host 42"
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+Open a TCP connection to port 42 of example.host using IPsec ESP for outgoing traffic only.
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.It Li "nc -v hostname 42"
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Open a TCP connection to port 42 of hostname, displaying some
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diagnostic messages on stderr.
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