Deploy MIME Filter Agent
- Updated On 18 Oct 2020
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The SecureCircle MIME filter (sc-java-agent) is responsible for transparently replacing SecureCircle encrypted file attachments in MIME formatted messages with their decrypted version.
SMTP traffic will be internally re-routed through the MIME filter utilizing the system's firewall (iptables). By default, traffic going to port 12355 on the system's loopback adapter (127.0.0.1) will be redirected to the MIME filter on port 22355. The MIME filter will process the message, then send it to the upstream process listening on port 12355.
iptables setup is done in the file /apps/securecircle/bin/sc-java-agent.sh.
| Action | Command |
|---|---|
| Disable the service (will not start on boot) | systemctl disable sc-java-agent |
| Enable the service (will start on boot) | systemctl enable sc-java-agent |
| Monitor SMTP traffic using tcpdump. | tcpdump -Ann -i lo tcp port 12355 or tcp port 22355 or tcp port 25 |
| Restart the service | systemctl restart sc-java-agent |
| Start the service | systemctl start sc-java-agent |
| Stop the service | systemctl stop sc-java-agent |
| Verify iptables rules have been loaded | iptables -t nat -L OUTPUT |
| View service logs | journalctl -au sc-java-agent |
| View service status | systemctl status sc-java-agent |
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