This AOLserver module is required if you want people to connect to your site via https. These commands compile nsopenssl and install it, along with a tcl helper script to handle https connections. You will also need ssl certificates. Because those should be different for each server service, you won't need those instructions until later. You will need the unpacked Aolserver tarball in /usr/local/src/aolserver and the nsopenssl tarball in /tmp.

Red Hat 9 note: see this thread for details on compiling nsopenssl.)

[root@yourserver bin]# cd /usr/local/src/aolserver
[root@yourserver aolserver]# wget --passive http://www.scottg.net/download/nsopenssl-2.1.tar.gz
[root@yourserver aolserver]# tar xzf nsopenssl-2.1.tar.gz 
[root@yourserver aolserver]# cd nsopenssl-2.1
[root@yourserver nsopenssl-2.1]# make OPENSSL=/usr/local/ssl
gcc -I/usr/local/ssl/include -I../aolserver/include -D_REENTRANT=1 -DNDEBUG=1 -g -fPIC -Wall -Wno-unused -mcpu=i686 -DHAVE_CMMSG=1 -DUSE_FIONREAD=1 -DHAVE_COND_EINTR=1   -c -o nsopenssl.o nsopenssl.c
(many lines omitted)
gcc -shared -nostartfiles -o nsopenssl.so nsopenssl.o config.o init.o ssl.o thread.o tclcmds.o -L/usr/local/ssl/lib -lssl -lcrypto
[root@yourserver nsopenssl-2.1]# cp nsopenssl.so /usr/local/aolserver/bin
[root@yourserver nsopenssl-2.1]# cp https.tcl /usr/local/aolserver/modules/tcl/
[root@yourserver nsopenssl-2.1]#
cd /usr/local/src/aolserver
wget --passive http://www.scottg.net/download/nsopenssl-2.1.tar.gz
tar xzf nsopenssl-2.1.tar.gz 
cd nsopenssl-2.1 
make OPENSSL=/usr/local/ssl 
cp nsopenssl.so /usr/local/aolserver/bin 
cp https.tcl /usr/local/aolserver/modules/tcl/

For Debian (more information):

apt-get install libssl-dev
cd /usr/local/src/aolserver
tar xzf /tmp/nsopenssl-2.1.tar.gz
cd nsopenssl-2.1
make OPENSSL=/usr/lib/ssl
cp nsopenssl.so /usr/local/aolserver/bin
cp https.tcl /usr/local/aolserver/modules/tcl/