ATL Telecom AM2 - Manual (Page 53)

ATL User Guide
AM2 G.SHDSL Modem
53
6
Index Source Action Direction Protocol Source. Port Destination
1234 171.16.1.1 192.168.3.4 Permit (A) Inbound TCP 1
25 192.168.3.4 171.16.1.1 Permit (B) Outbound TCP 2
1357 192.168.3.4 171.16.1.1 Permit (C) Outbound TCP 3
25 171.16.1.1 192.168.3.4 Permit (D) Inbound TCP 4
5150 171.16.3.4 10.1.2.3 Permit (E) Inbound TCP 5
6000 10.1.2.3 171.16.3.4 Permit (E) Outbound TCP 6
Dest. Port
25
1234
25
1357
6000
5150
Index Source Action Direction Protocol Source. Port Destination
>1023 Internal External Permit Inbound TCP 1
25 External Internal Permit Outbound TCP 2
>1023 External Internal Permit Outbound TCP 3
25 Internal External Permit Inbound TCP 4
Any Any Any Deny Either Any 5
Dest. Port
25
>1023
25
>1023
25
Update Filtering Rule
Filtering Result
Internet
Packet Source Action (Rule) Direction Protocol Dest. Port Destination
6000 171.16.3.4 10.1.2.3 Deny (E) Inbound TCP 5
5150 10.1.2.3 171.16.3.4 Deny (E) Outbound TCP 6
X11 Server
Attacker
5
6
Firewall
172.16.3.4:6000
10.1.2.3:5150