Functions
EBW-E100
54
In order to mask the packets with the virtual tunnel IP address, check the
checkbox "Masquerade packets before tunnelling". The recipient of the
packets sees the IP address of the tunnel end as sender then, not the
address of the original sender.
In order to use a different encryption method than the preset method for
the OpenVPN connection, select one of the encryption types in the drop-
down list "Cipher algorithm".
In order to configure the detail level of the messages in the connection
log, enter the detail level into the field "Log level", where "0" disables the
log record completely and "9" records the most detailed information.
In order to define a certain fragmenting size for the OpenVPN tunnel
packets in bytes, use the entry field "Fragment packets". Enter the
required maximum packet size in bytes here. If you don't enter a value,
the OpenVPN packets will have a maximum size of 1.500 bytes. The
actually transmitted amount of user data is lower, because OpenVPN
creates a "protocol overhead", which means that the protocol
information that is transmitted as well is a part of the packet size.
In order to adjust the interval up to the key renegotiation, use the entry
field "Interval for renegotiation of data channel key". This interval
configures the time in seconds, which must expire before new keys are
created.
In order to adjust the VPN ping interval, use the entry field "Ping
interval". Enter the interval in the amount of seconds, in which the
OpenVPN server of the EBW-E100 sends ping packets to the remote
VPN terminal. The frequent ping is used to keep the connection open via
several routers and gateways, which may participate in the connection
and would close the channel in case there was no communication.
In order to adjust the ping restart interval, use the entry field "Ping restart
interval". The ping restart interval configures the time in seconds after
which the tunnel is to be established again, if no ping from the remote
terminal has arrived during the complete time. The value "0" prevents the
tunnel to be terminated, even if no ping is received any more.
The ping interval and the ping restart interval must be adjusted to each
other. Typical values are 30 and 60 (default). The ping interval should
not exceed half of the ping restart interval. We recommend for poor
WAN connections to reduce the ping interval and, if required, increase
the ping restart interval.
