Squid + SquidClamav2016/12/07

	Install SquidClamav and Configure Proxy Server to scan downloaded files to protect from virus.
[1]	Install Clamav, refer to here.
[2]	Install Clamav Scanner.

[root@prox ~]#

dnf -y install clamav-scanner clamav-scanner-systemd

[root@prox ~]#

vi /etc/clamd.d/scan.conf

# line 8: comment out

Example

# line 14: uncomment

LogFile /var/log/clamd.scan

# line 66: uncomment

PidFile /var/run/clamd.scan/clamd.pid

# line 70: uncomment

TemporaryDirectory /var/tmp

# line 85: uncomment

LocalSocket /var/run/clamd.scan/clamd.sock

# line 101: uncomment

TCPSocket 3310

[root@prox ~]#

touch /var/log/clamd.scan

[root@prox ~]#

chown clamscan. /var/log/clamd.scan

[root@prox ~]#

systemctl start clamd@scan

[root@prox ~]#

systemctl enable clamd@scan

[3]	If SELinux is enabled on your server, configure like follows.

[root@prox ~]#

restorecon -v /var/log/clamd.scan

[4]	Install c-icap.

[root@prox ~]#

dnf -y install gcc make

[root@prox ~]#

curl -L -O http://downloads.sourceforge.net/project/c-icap/c-icap/0.4.x/c_icap-0.4.4.tar.gz

[root@prox ~]#

tar zxvf c_icap-0.4.4.tar.gz

[root@prox ~]#

cd c_icap-0.4.4

[root@prox c_icap-0.4.4]#

./configure

[root@prox c_icap-0.4.4]#

make

[root@prox c_icap-0.4.4]#

make install

[root@prox c_icap-0.4.4]#

[root@prox ~]#

cp /usr/local/etc/c-icap.conf /etc

[root@prox ~]#

vi /etc/c-icap.conf

# line 161: change admin address

ServerAdmin

root@srv.world

# line 170: change hostname

ServerName

prox.srv.world

# line 568: add

Service squidclamav squidclamav.so

[root@prox ~]#

vi /etc/tmpfiles.d/c-icap.conf

# create new

d /var/run/c-icap 0755 root root -

[root@prox ~]#

vi /usr/lib/systemd/system/c-icap.service

# create new

[Unit]
Description=c-icap service
After=network.target

[Service]
Type=forking
PIDFile=/var/run/c-icap/c-icap.pid
ExecStart=/usr/local/bin/c-icap -f /etc/c-icap.conf
KillMode=process

[Install]
WantedBy=multi-user.target

[5]	Install SquidClamav ( Download latest version of it from the following link ). http://sourceforge.net/projects/squidclamav/files/squidclamav/

[root@prox ~]#

curl -L -O http://downloads.sourceforge.net/project/squidclamav/squidclamav/6.16/squidclamav-6.16.tar.gz

[root@prox ~]#

tar zxvf squidclamav-6.16.tar.gz

[root@prox ~]#

cd squidclamav-6.16

[root@prox squidclamav-6.16]#

./configure --with-c-icap

[root@prox squidclamav-6.16]#

make

[root@prox squidclamav-6.16]#

make install

[root@prox squidclamav-6.16]#

[root@prox ~]#

ln -s /usr/local/etc/squidclamav.conf /etc/squidclamav.conf

[root@prox ~]#

vi /etc/squidclamav.conf

# line 18: change( destination URL for redirect. Create it first )

redirect

http://www.srv.world/error.html

# line 27: change( same with clamd )

clamd_local

/var/run/clamd.scan/clamd.sock

[6]	Configure Squid.

[root@prox ~]#

vi /etc/squid/squid.conf

# add to the end

icap_enable on
icap_send_client_ip on
icap_send_client_username on
icap_client_username_header X-Authenticated-User
icap_service service_req reqmod_precache bypass=1 icap://127.0.0.1:1344/squidclamav
adaptation_access service_req allow all
icap_service service_resp respmod_precache bypass=1 icap://127.0.0.1:1344/squidclamav
adaptation_access service_resp allow all

[root@prox ~]#

systemctl start c-icap

[root@prox ~]#

systemctl enable c-icap

[root@prox ~]#

systemctl restart squid

[7]	It's OK all. Next, try to access to the site below from a ClientPC with Web browser, http://eicar.org/85-0-Download.html then, click the test Virus "eicar.com" to make sure to redirect the site you configured.

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