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Page 47 | AlliedWare™ OS How To Note: VPNs for Corporate Networks
branch office
1
# Create a pair of rules to allow office-to-office payload traffic to
# pass through the firewall without applying NAT.
# The rule for the public interface uses encapsulation=ipsec to
# identify incoming VPN traffic.
add firewall poli=branch1 ru=4 ac=non int=ppp0 prot=all enc=ips
# The rule for the private interface uses both source and destination
# addresses to identify outgoing VPN traffic.
add firewall poli=branch1 ru=5 ac=non int=vlan1 prot=all
ip=192.168.141.1-192.168.141.254
set firewall poli=branch1 ru=5 rem=192.168.140.0-192.168.144.254
# If you configured SSH, create a rule for SSH traffic.
add firewall policy=branch1 ru=6 ac=allo int=ppp0 prot=tcp po=22
ip=222.222.222.1 gblip=222.222.222.1 gblp=22
# If you use telnet instead (not recommended), create a rule for it.
# add firewall policy=branch1 ru=7 ac=allo int=ppp0 prot=tcp po=23
# ip=222.222.222.1 gblip=222.222.222.1 gblp=23
# INT configuration - if prioritising VoIP
set int=ppp0 mtu=256
set int=ppp0 frag=yes
# CLASSIFIER configuration - if prioritising VoIP
# Create a classifier to identify voice traffic (DSCP value 48 in
# this example).
create class=48 ipds=48
# Software QoS configuration - if prioritising VoIP
ena sqos
# Create a traffic class. This traffic class tags the classified
# traffic as high priority on the interface queue. Also,make the
# queue small - this is optimal for VoIP traffic.
cre sqos tr=1 prio=15 maxq=10
# Create a policy with a virtual bandwidth and assign the traffic
# class to this policy.
cre sqos poli=1 virt=120kbps
add sqos poli=1 tr=1
add sqos tr=1 class=48
set sqos interface=ipsec-hq tunnelpolicy=1
# TRIGGER configuration - if prioritising VoIP
# Create triggers to apply SQoS to the dynamic PPP interfaces of up
# to four simultaneous roaming VPN client connections. See page 34
# for the script each trigger runs.
enable trigger
create trigger=1 interface=ppp0 event=up cp=ipcp script=ppp0up.scp
create trigger=2 interface=ppp0 event=up cp=ipcp script=ppp1up.scp
create trigger=3 interface=ppp0 event=up cp=ipcp script=ppp2up.scp
create trigger=4 interface=ppp0 event=up cp=ipcp script=ppp3up.scp