G.shdsl Router User Manual 152
52
Packet Direction
Source
Destination
Protocol Dest. Port Action (Rule)
1
Inbound
192.168.3.4
172.16.1.1
TCP
25
Permit (A)
2
Outbound
172.16.1.1
192.168.3.4
TCP
1234
Permit (B)
Internet
1
2
SMTP Server
SMTP Client
172.16.1.1:25
192.168.3.4:1234
Firewall
Packet Direction
Source
Destination
Protocol Dest. Port Action (Rule)
3
Outbound
172.16.1.1
192.168.3.4
TCP
25
Permit (C)
4
Inbound
192.168.3.4
172.16.1.1
TCP
1357
Permit (D)
Internet
3
4
SMTP Client
SMTP Server
172.16.1.1:1357
192.168.3.4:25
Firewall
Packet Direction
Source
Destination
Protocol Dest. Port Action (Rule)
5
Inbound
10.1.2.3
171.16.3.4
TCP
6000
Deny (E)
6
Outbound
171.16.3.4
10.1.2.3
TCP
5150
Deny (E)
Internet
5
6
Attacker
171.16.3.4:6000
10.1.2.3:5150
Firewall
X11 Server
Update Filtering Rule
Index Protocol Direction Action
Source
Destination
Source Port Dest. Port
1
TCP
Inbound Permit
External
Internal
>1023
25
2
TCP
Outbound Permit
Internal
External
25
>1023
3
TCP
Outbound Permit
Internal
External
>1023
25
4
TCP
Inbound Permit
External
Internal
25
>1023
5
Any
Either
Deny
Any
Any
Any
Any
Filtering Result
Index Protocol Direction Action
Source
Destination Source Port Dest. Port
1
TCP
Inbound Permit(A) 192.168.3.4
171.16.1.1
1234
25
2
TCP
Outbound Permit(B) 171.16.1.1
192.168.3.4 25
1234
3
TCP
Outbound Permit(C) 171.16.1.1
192.168.3.4 1357
25
4
TCP
Inbound Permit(D) 192.168.3.4
171.16.1.1
25
1357
5
TCP
Inbound Deny(E) 10.1.2.3
171.16.3.4
5150
6000
6
TCP
Outbound Deny(E) 171.16.3.4
10.1.2.3
6000
5150