I use red hat 7.3 as private ISP.
situation as follow
1. linux+ADSL pppoe connect internet OK (eth0, ppp0)
2. linux com port + MODEM
3. win98 client dial-up connect OK (ppp1, use private ip 10.10.10.X)
4. after dial-in, linux route has a row for 10.10.10.x
5. linux ip-forward enabled
6. setting no firewall
7. client connect linux OK, but internet fail.
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