MPD VPN questions...

[Eric Crist]

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Hello all,

I have MPD setup to create pptp VPN.  I have a couple of questions.

1) How do I make traffic coming from a host that's connected to the VPN 
look like it's coming from a VPN IP address?  Currently it comes from 
their real, i.e. public IP address.

2) I use SSL for mail retrieval currently.  Right now, if I'm connected 
to my VPN, if I try to retrieve email, I get nothing.  If I look in 
/var/log/messages, I see the following:

Oct  3 19:43:09 grog qpopper[730]: (v4.0.5) TLSv1/SSLv3 handshake with 
client at 0-1pool198-217.nas2.fargo1.nd.us.da.qwest.net (67.1.198.217); 
new session-id; cipher: RC4-SHA (RC4-SHA SSLv3 Kx=RSA Au=RSA 
Enc=RC4(128) Mac=SHA1), 128 bits
Oct  3 19:43:14 grog qpopper[730]: I/O Error
Oct  3 19:43:14 grog qpopper[730]: Error writing to client
Oct  3 19:43:14 grog qpopper[730]: I/O Error
Oct  3 19:43:14 grog qpopper[730]: Error writing to client
Oct  3 19:43:14 grog qpopper[730]: I/O Error
Oct  3 19:43:14 grog qpopper[730]: Error writing to client
Oct  3 19:43:14 grog qpopper[730]: OpenSSL Error during write
Oct  3 19:43:14 grog qpopper[730]: ...SSL error: error:1409F07F:SSL 
routines:SSL3_WRITE_PENDING:bad write retry
Oct  3 19:43:14 grog qpopper[730]: Error writing to client
Oct  3 19:43:14 grog qpopper[730]: ecrist at 
0-1pool198-217.nas2.fargo1.nd.us.da.qwest.net (67.1.198.217): -ERR POP 
hangup from grog.secure-computing.net
Oct  3 19:43:14 grog qpopper[730]: OpenSSL Error during write
Oct  3 19:43:14 grog qpopper[730]: ...SSL error: error:1409F07F:SSL 
routines:SSL3_WRITE_PENDING:bad write retry
Oct  3 19:43:14 grog qpopper[730]: Error writing to client
Oct  3 19:43:14 grog qpopper[730]: Stats: ecrist 0 0 1313 6756817 
0-1pool198-217.nas2.fargo1.nd.us.da.qwest.net 67.1.198.217
Oct  3 19:43:14 grog qpopper[730]: OpenSSL Error during write
Oct  3 19:43:14 grog qpopper[730]: ...SSL error: error:1409F07F:SSL 
routines:SSL3_WRITE_PENDING:bad write retry
Oct  3 19:43:14 grog qpopper[730]: Error writing to client

Any idea why this would be?  I have a feeling it's because the server 
is trying to send to my public IP address, but that's being blocked by 
the VPN from the server side.  I'm all confused now.

Thanks for you help.

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Eric F Crist
Secure Computing Networks
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