Watchguard Firebox X1000, Reference Manual

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CHAPTER 7: Out-of-Band Initialization Strings
88 WatchGuard Firebox System
escape xx,yy,..
Specifies that certain characters should be escaped on
transmission (regardless of whether the peer requests them to be
escaped with its async control character map). The characters to
be escaped are specified as a list of hex numbers separated by
commas.
Almost any character can be specified for the escape option,
unlike the asyncmap option which allows only control characters
to be specified. The characters that may not be escaped are those
with hex values 0x20 — 0x3f or 0x5e.
mpfto <period>
Specifies how long the PPP session should wait for a valid
management session to begin. If no valid session starts, then PPP
will disconnect after this timeout period. The default is 90
seconds.
mru n
Set the Maximum Receive Unit (MRU) value to
n
. Pppd will ask
the peer to send packets of no more than n bytes. The minimum
MRU value is 128. The default MRU value is 1,500. A value of 296
is recommended for slow links (40 bytes for TCP/IP 256
bytes of data).
mtu n
Set the Maximum Transmit Unit (MTU) value to n . Unless the
peer requests a smaller value via MRU negotiation, pppd will
request that the kernel networking code send data packets of no
more than
n
bytes through the PPP network interface.
passive
Enables the “passive” option in the LCP. With this option, pppd
will attempt to initiate a connection; if no reply is received from
the peer, pppd will then wait passively for a valid LCP packet
from the peer, instead of exiting, as it would without this option.
bsdcomp nr,nt
Request that the peer compress packets that it sends, using the
BSD-Compress scheme, with a maximum code size of
nr bits, and
agree to compress packets sent to the peer with a maximum code
size of
nt bits. If nt is not specified, it defaults to the value given
for nr . Values in the range 9 to 15 can be used for nr and nt ; larger