Firewall; Geoeral Settiogs - Teltonika RUT240 User Manual

7.6 Firewall

Io this sectoo we will look over the various frewall features that come with RUT230.
7.6.1 General Settings
The router's frewall is a staodard Lioux iptables packagen which uses routog chaios aod policies to facilitate
cootrol over iobouod aod outbouod traafc.
Field Name Sample ialue
1. Drop Iovalid Checked/Uochecked
packets
2. Ioput Reject/Drop/Accept
3. Output Reject/Drop/Accept
4. Forward Reject/Drop/Accept
*DEFAULT: Wheo a packet goes through a frewall chaio it is matched agaiost all the rules for that specifc chaio. If
oo rule matches said packetn ao accordiog Actoo (either Drop or Reject or Accept) is performed.
Accept – Packet gets to cootoue dowo the oext chaio.
Drop – Packet is stopped aod deleted.
Reject – Packet is stoppedn deleted aodn differeotly from Dropn ao ICMP packet cootaioiog a message of rejectoo is
seot to the source of the dropped packet.
Explanaton
A "Drop" actoo is performed oo a packet that is determioed to be iovalid
DEFAULT* actoo that is to be performed for packets that pass through the
Ioput chaio.
DEFAULT* actoo that is to be performed for packets that pass through the
Output chaio.
DEFAULT* actoo that is to be performed for packets that pass through the
Forward chaio.
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