I have two stunnel processes. One listing on 443 -> localhost:80. The other listening on 8000 -> localhost:7001. (See configs below.)

However, when I stop the process listening on port 7001, both stunnel processes start listening on 7001 (and a few other ports). I'm completely confused as to why this would happen.

This is what I see normally:

mta4-tiny-support (epgate)[6]$ sudo lsof -p 25253 -p 25255 -a -i4

Password:

COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME

stunnel4 25253 root 6u IPv4 3439450 TCP *:8000 (LISTEN)

stunnel4 25255 root 6u IPv4 3439456 TCP *:https (LISTEN)

This is what I see when stunnel appears to go bizerk: (after stopping the process that was listening on ports *:7000, localhost:7001 & localhost:7005)

COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME

stunnel4 22788 root 5u IPv4 1269640 TCP 127.0.0.1:4341->127.0.0.1:19996 (CLOSE_WAIT)

stunnel4 22788 root 6u IPv4 1273504 TCP 127.0.0.1:7001 (LISTEN)

stunnel4 22788 root 7u IPv4 1273476 TCP 127.0.0.1:4606->127.0.0.1:19995 (ESTABLISHED)

stunnel4 22788 root 9u IPv4 1273477 TCP 127.0.0.1:19995->127.0.0.1:4606 (ESTABLISHED)

stunnel4 22788 root 11u IPv4 1273507 TCP *:7000 (LISTEN)

stunnel4 22788 root 17u IPv4 1273515 TCP 127.0.0.1:7005 (LISTEN)

stunnel4 22788 root 19u IPv4 1274895 TCP 127.0.0.1:7001->127.0.0.1:1793 (CLOSE_WAIT)

stunnel4 22788 root 24u IPv4 1275089 TCP *:8000 (LISTEN)

stunnel4 22790 root 5u IPv4 1269640 TCP 127.0.0.1:4341->127.0.0.1:19996 (CLOSE_WAIT)

stunnel4 22790 root 6u IPv4 1273504 TCP 127.0.0.1:7001 (LISTEN)

stunnel4 22790 root 7u IPv4 1273476 TCP 127.0.0.1:4606->127.0.0.1:19995 (ESTABLISHED)

stunnel4 22790 root 9u IPv4 1273477 TCP 127.0.0.1:19995->127.0.0.1:4606 (ESTABLISHED)

stunnel4 22790 root 11u IPv4 1273507 TCP *:7000 (LISTEN)

stunnel4 22790 root 17u IPv4 1273515 TCP 127.0.0.1:7005 (LISTEN)

stunnel4 22790 root 19u IPv4 1274895 TCP 127.0.0.1:7001->127.0.0.1:1793 (CLOSE_WAIT)

stunnel4 22790 root 24u IPv4 1275094 TCP *:443 (LISTEN)

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address Foreign Address State User Inode PID/Program name

tcp 0 0 127.0.0.1:7008 0.0.0.0:* LISTEN 0 1281907 24848/python

tcp 0 0 0.0.0.0:8000 0.0.0.0:* LISTEN 0 1275089 22788/stunnel4

tcp 0 0 0.0.0.0:1025 0.0.0.0:* LISTEN 0 1681 -

tcp 0 0 0.0.0.0:963 0.0.0.0:* LISTEN 0 1556 1205/rpc.statd

tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 0 1238 986/portmap

tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 0 1281911 24848/python

tcp 0 0 127.0.0.1:7025 0.0.0.0:* LISTEN 0 1281130 24605/master

tcp 0 0 127.0.0.1:7026 0.0.0.0:* LISTEN 0 1281542 24677/python

tcp 0 0 0.0.0.0:818 0.0.0.0:* LISTEN 0 1356 1061/ypbind

tcp 0 0 127.0.0.1:7027 0.0.0.0:* LISTEN 0 1281731 24777/python

tcp 0 0 127.0.0.1:7028 0.0.0.0:* LISTEN 0 1281910 24848/python

tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 0 1486 1195/sshd

tcp 0 0 0.0.0.0:7000 0.0.0.0:* LISTEN 0 1273507 22788/stunnel4

tcp 0 0 127.0.0.1:5432 0.0.0.0:* LISTEN 400 1269115 20559/postmaster

tcp 0 0 172.16.80.213:25 0.0.0.0:* LISTEN 0 1281126 24605/master

tcp 0 0 172.16.80.212:25 0.0.0.0:* LISTEN 0 1280994 24584/master

tcp 0 0 127.0.0.1:7001 0.0.0.0:* LISTEN 0 1273504 22788/stunnel4

tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 0 1275094 22790/stunnel4

tcp 0 0 127.0.0.1:955 0.0.0.0:* LISTEN 0 1518 1201/famd

tcp 0 0 127.0.0.1:7005 0.0.0.0:* LISTEN 0 1273515 22788/stunnel4

tcp 0 0 127.0.0.1:7006 0.0.0.0:* LISTEN 0 1281540 24677/python

tcp 0 0 127.0.0.1:7007 0.0.0.0:* LISTEN 0 1281724 24777/python

I'm running stunnel 4.09 on Debian 3.1/Linux 2.6 Kernel. My configurations are:

pid=/var/run/epgate_admin_stunnel4.pid

cert=/epgate/etc/ssl/admin.stunnel

[Admin]

accept=8000

connect=7001

and:

pid=/var/run/epgate_quarantine_stunnel4.pid

cert=/epgate/etc/ssl/quar.stunnel

[Quarantine]

accept=443

connect=80