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© Virtual Access 2018
GW2020 Series User Manual
Issue: 2.1
Page 276 of 423
Web: Destination port
UCI: firewall.<rule label>.dest_port
Opt: dest_port
For DNAT, redirects matched incoming traffic to the given port on
the internal host.
For SNAT, matches traffic directed at the given ports.
Web: Action
UCI: firewall.<rule label>.target
Opt: target
Action to take when rule is matched.
Option
Description
UCI
drop
Drop matching traffic
DROP
accept
Allow matching traffic
ACCEPT
reject
Reject matching traffic
REJECT
don’t track
Disable connection tracking for
the rule. See the ‘Connection
tracking’ section below for more
information.
NOTRACK
Web: Extra arguments
UCI: firewall.<rule label>.extra
Opt: extra
Passes extra arguments to IP tables. This is useful to specify
additional match options, like -m policy --dir in for IPSec.
Web: n/a
UCI: firewall.<rule label>.reflection
Opt: reflection
Disables NAT reflection for this redirect if set to 0. Applicable to
DNAT targets.
Web: n/a
UCI: firewall.<rule label>.limit
Opt: limit
Sets maximum average matching rate; specified as a number,
with an optional /second, /minute, /hour or /day suffix. Example:
3/hour.
Web: n/a
UCI: firewall.<rule label>.limit_burst
Opt: limit_burst
Sets maximum initial number of packets to match. This number
gets recharged by one every time the limit specified above is not
reached, up to this number.
Web: n/a
UCI: firewall.<rule label>.recent
Opt: recent
Sets number of allowed connections within specified time. This
command takes two values e.g. recent=2 120 will allow 2
connections within 120 seconds.
Table 90: Information table for firewall traffic rules
ICMP Options
ICMP Options
ICMP Options
ICMP Options
address-mask-reply
host-redirect
pong
time-exceeded
address-mask-request
host-unknown
port-unreachable
timestamp-reply
any
host-unreachable
precedence-cutoff
timestamp-request
communication-
prohibited
ip-header-bad
protocol-unreachable
TOS-host-redirect
destination-unreachable network-prohibited
redirect
TOS-host-unreachable
echo-reply
network-redirect
required-option-missing TOS-network-redirect
echo-request
network-unknown
router-advertisement
TOS-network-
unreachable
fragmentation-needed
network-unreachable
router-solicitation
ttl-exceeded
host-precedence-
violation
parameter-problem
source-quench
ttl-zero-during-
reassembly
host-prohibited
ping
source-route-failed
ttl-zero-during-transit
Table 91: Information table for match ICMP type drop-down menu