I'm having problems with zlib compression - stunnel 4.07 on my client machne crashes whenever I try and start a session. With compression set to rle or not defined, there is no problem. I am securing a MySQL connection between a Windows client and Mandrake Linux 10.1 server. Client Configuration: Stunnel 4.07 and openssl 0.9.7e-zlib binaries downloaded from Stunnel website stunnel.conf ------------ cert=./Allan_Guild_Work.pem key=./Allan_Guild_Work_key.pem client=yes compression=zlib [Primary Club] accept=3306 connect=195.137.78.107:3307 TIMEOUTbusy=5 ------------- Server Configuration: Stunnel 4.07 and openssl 0.9.7e (compiled with zlib support) rebuilt from Mandrake Cooker SRPMS stunnel.conf ------------ CApath=/etc/ssl/stunnel/certs/ cert=/etc/ssl/stunnel/CAcert.pem key=/etc/ssl/stunnel/CAkey.pem client=no foreground=yes pid=/var/run/stunnel.pid verify=0 compression=zlib [Primary Club] accept=3307 connect=3306 ------------ When I try and connect, I get the following output from the client (which then crashes): ------------- 2005.01.11 19:04:14 LOG5[308:2172]: stunnel 4.07 on x86-pc-mingw32-gnu WIN32+IPv4 with OpenSSL 0.9.7e 25 Oct 2004 2005.01.11 19:04:14 LOG5[308:1688]: No limit detected for the number of clients 2005.01.11 19:04:16 LOG5[308:804]: Primary Club connected from 127.0.0.1:4769 ------------- and the following from the server: ------------- 2005.01.11 19:21:30 LOG5[25439:1076523680]: stunnel 4.07 on i586-mandrake-linux-gnu PTHREAD+POLL+IPv4+LIBWRAP with OpenSSL 0.9.7e 25 Oct 2004 2005.01.11 19:21:30 LOG5[25439:1076523680]: 500 clients allowed 2005.01.11 19:21:53 LOG5[25439:1073900464]: Primary Club connected from 212.135.219.66:3974 2005.01.11 19:21:53 LOG5[25439:1073900464]: VERIFY IGNORE: depth=0, /C=UK/ST=Some-State/L=London/O=Primary Club/CN=Allan Guild/emailAddress=allan.guild@bitsnpieces.org.uk 2005.01.11 19:21:53 LOG5[25439:1073900464]: VERIFY IGNORE: depth=0, /C=UK/ST=Some-State/L=London/O=Primary Club/CN=Allan Guild/emailAddress=allan.guild@bitsnpieces.org.uk 2005.01.11 19:21:57 LOG3[25439:1073900464]: SSL_read (ERROR_SYSCALL): Connection reset by peer (104) 2005.01.11 19:21:57 LOG5[25439:1073900464]: Connection reset: 3843 bytes sent to SSL, 55 bytes sent to socket ------------- Any advice would be greatly appreciated (Do I need a zlib dll?), Allan