hi all,
i try make firewall to allow pptp connection, i have turn on gre and pptp at service port. then i make firewall to allowed pptp connection to this router. this my firewall configuration :
Flags: X - disabled, I - invalid, D - dynamic
0 ;;; Checked For Viruses Port
chain=input action=jump jump-target=virus
1 chain=forward action=jump jump-target=virus
2 ;;; allow ping
chain=input protocol=icmp action=accept
3 chain=forward protocol=icmp action=accept
4 ;;; Accept established connections
chain=input connection-state=established action=accept
5 chain=forward connection-state=established action=accept
6 ;;; Accept related connections
chain=input connection-state=related action=accept
7 chain=forward connection-state=related action=accept
8 ;;; Drop invalid connections
chain=input connection-state=invalid action=drop
9 chain=forward connection-state=invalid action=drop
10 ;;; From All Network
chain=forward src-address-list=Allowed action=accept
11 ;;; To All Network
chain=forward dst-address-list=Allowed action=accept
12 ;;; Allowed PPPtP
chain=input protocol=tcp dst-port=1723 action=accept
13 chain=input protocol=tcp dst-port=47 action=accept
14 ;;; Port scanners to list
chain=input protocol=tcp psd=21,3s,3,1 action=add-src-to-address-list
address-list=port scanners address-list-timeout=2w
15 chain=forward protocol=tcp psd=21,3s,3,1 action=add-src-to-address-list
address-list=port scanners address-list-timeout=2w
16 ;;; NMAP FIN Stealth scan
chain=input protocol=tcp tcp-flags=fin,!syn,!rst,!psh,!ack,!urg
action=add-src-to-address-list address-list=port scanners
address-list-timeout=2w
17 chain=forward protocol=tcp tcp-flags=fin,!syn,!rst,!psh,!ack,!urg
action=add-src-to-address-list address-list=port scanners
address-list-timeout=2w
18 ;;; SYN/FIN scan
chain=input protocol=tcp tcp-flags=fin,syn
action=add-src-to-address-list address-list=port scanners
address-list-timeout=2w
19 chain=forward protocol=tcp tcp-flags=fin,syn
action=add-src-to-address-list address-list=port scanners
address-list-timeout=2w
20 ;;; SYN/RST scan
chain=input protocol=tcp tcp-flags=syn,rst
action=add-src-to-address-list address-list=port scanners
address-list-timeout=2w
21 chain=forward protocol=tcp tcp-flags=syn,rst
action=add-src-to-address-list address-list=port scanners
address-list-timeout=2w
22 ;;; FIN/PSH/URG scan
chain=input protocol=tcp tcp-flags=fin,psh,urg,!syn,!rst,!ack
action=add-src-to-address-list address-list=port scanners
address-list-timeout=2w
23 chain=forward protocol=tcp tcp-flags=fin,psh,urg,!syn,!rst,!ack
action=add-src-to-address-list address-list=port scanners
address-list-timeout=2w
24 ;;; ALL/ALL scan
chain=input protocol=tcp tcp-flags=fin,syn,rst,psh,ack,urg
action=add-src-to-address-list address-list=port scanners
address-list-timeout=2w
25 chain=forward protocol=tcp tcp-flags=fin,syn,rst,psh,ack,urg
action=add-src-to-address-list address-list=port scanners
address-list-timeout=2w
26 ;;; dropping port scanners
chain=input src-address-list=port scanners action=drop
27 chain=forward src-address-list=port scanners action=drop
28 ;;; Drop everything else
chain=input action=drop
29 chain=forward action=drop
with this rule, pptp conenction still drop. please share