SuSE 7.0, IPCHAINS, SSH, VPN, Modem hangup

[Uwe Scheffold]

Hi out threre,

I have a problem with ssh vpn.

There is a installation, of a ssh-vpn on a Linux host. This host also works
as firewall with masquerading (ipchains).
After setup the ssh-vpn everything works fine. But after some time (10 min
or so) the connetion terminates with:

Apr 11 11:31:06 c523f pppd[8257]: sent [LCP ConfReq id=0x6 <asyncmap 0x0>
<magic 0x16bd5d1f><pcomp> <accomp>]
Apr 11 11:31:06 c523f pppd[8257]: rcvd [LCP ConfReq id=0x6 <asyncmap 0x0>
<magic 0x16bd5d1f> <pcomp> <accomp>]
Apr 11 11:31:06 c523f pppd[8257]: sent [LCP ConfNak id=0x6 <magic
0xec70b2f1>]
Apr 11 11:31:07 c523f pppd[8257]: Modem hangup
Apr 11 11:31:07 c523f pppd[8257]: Connection terminated.
Apr 11 11:31:07 c523f pppd[8257]: Hangup (SIGHUP)
Apr 11 11:31:07 c523f pppd[8257]: Failed to open /dev/ttyp0: Input/output
error
Apr 11 11:31:07 c523f last message repeated 8 times
Apr 11 11:31:07 c523f pppd[8257]: Exit.

Is anybody able to seen the reason for this?

Is it possible detect the brakedown of the connection and to restart the
vpn?

Best regards: Uwe

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