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ClamAV not updating virus definitions via proxy


Article ID: 168849


Updated On:


Security Analytics Security Analytics - VA


When Security Analytics (SA) is configured via the GUI to use a web proxy, the ClamAV definition update service 'freshclam' will not use the proxy and cannot reach the Internet.

The following or similar messages may be present in /var/log/messages:
Nov 11 13:18:26 solera1 freshclam[6451]: nonblock_connect: connect timing out (30 secs)
Nov 11 13:18:26 solera1 freshclam[6451]: Can't connect to port 80 of host (IP:
Nov 11 13:18:26 solera1 freshclam[6451]: Can't download daily.cvd from
Nov 11 13:18:26 solera1 freshclam[6451]: Giving up on
Nov 11 13:18:26 solera1 freshclam[6451]: Update failed. Your network may be down or none of the mirrors listed in /etc/freshclam.conf is working. Check for possible reasons.



The freshclam program is not designed to recognize standard Linux environmental variables used by Security Analytics which define the web proxy.

Further manual configuration is needed for freshclam.




The proxy must be defined in the freshclam configuration file using the following procedure:

1. Log into the device via SSH or at the console as the root user

2. Make a backup of the freshclam configuration file
cp /etc/freshclam.conf /etc/freshclam.conf.orig

3. Edit the freshclam configuration file using the "vi" editor
vi /etc/freshclam.conf

4. Locate the proxy configuration lines, uncomment the required settings, and modify them to the desired web proxy values
# Proxy settings
# Default: disabled
#HTTPProxyPort 1234
#HTTPProxyUsername myusername
#HTTPProxyPassword mypass

# If your servers are behind a firewall/proxy which applies User-Agent
# filtering you can use this option to force the use of a different
# User-Agent header.
# Default: clamav/version_number
#HTTPUserAgent SomeUserAgentIdString

5. Save the file

6. At the command line, run "freshclam" to verify that the proxy settings are working and that the updater can reach the ClamAV database servers through the proxy.

7. Restart the ClamAV update service using the command "service solera-freshclamd restart"

Additional Information

Here are a few other things you can try:

Run the following command to see if the server has downloaded a local copy of the freshclam database:

freshclam --debug --verbose

You can look in the /var/lib/clamav directory and check the timestamps on files like 'daily.cvd'  You can try deleting (or moving) the daily.cld and then restart freshclam to see if it is able to pull down a fresh copy of the database.