Sir,
I tried Kppp. Modem was connected. But Firewall blocks connection. The
message from log is as below.

Nov 24 00:11:00 localhost kernel: PPP MPPE Compression module registered
Nov 24 00:11:00 localhost kernel: PPP BSD Compression module registered
Nov 24 00:11:00 localhost kernel: PPP Deflate Compression module registered
Nov 24 00:11:03 localhost pppd[7234]: local IP address 117.97.147.20
Nov 24 00:11:03 localhost pppd[7234]: remote IP address 192.168.100.101
Nov 24 00:11:03 localhost pppd[7234]: primary DNS address 202.56.250.5
Nov 24 00:11:03 localhost pppd[7234]: secondary DNS address 202.56.240.5
Nov 24 00:11:41 localhost kernel: Shorewall:OUTPUT:REJECT:IN= OUT=ppp0 SRC=
117.97.147.20 DST=202.56.250.5 LEN=59 TOS=0x00 PREC=0x00 TTL=64 ID=24366 DF
PROTO=UDP SPT=52797 DPT=53 LEN=39
Nov 24 00:11:41 localhost kernel: Shorewall:OUTPUT:REJECT:IN= OUT=ppp0 SRC=
117.97.147.20 DST=202.56.240.5 LEN=59 TOS=0x00 PREC=0x00 TTL=64 ID=24366 DF
PROTO=UDP SPT=54539 DPT=53 LEN=39
Nov 24 00:11:41 localhost kernel: Shorewall:OUTPUT:REJECT:IN= OUT=ppp0 SRC=
117.97.147.20 DST=202.56.250.5 LEN=59 TOS=0x00 PREC=0x00 TTL=64 ID=24366 DF
PROTO=UDP SPT=37070 DPT=53 LEN=39

I tried with
# iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE

eventhough i could not acess internet.
When i ping, external Ip of modem pings. but gateway is not give ping
response.

When i switch off the firewall, internet works fine.

please give me a solution to configure firewall

Padhu

-- 
Knowledge is power
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