Avira antivir webgate suite User Manual

Avira GmbH

Avira AntiVir WebGate

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On login, the FTP Client should be used just as before, i. e. when it was not using 
WebGate. WebGate acts as proxy between FTP Client and FTP server and scans the 
transferred data.

Optionally, WebGate allows a parent FTP proxy. For example, it can be set in 

avwebgate.conf

 as follows:

FTPProxyServer 127.0.0.1
FTPProxyPort 2121

In this case, WebGate does not communicate directly to the FTP server, but with 
the indicated parent FTP proxy. Thus, more FTP servers can operate consecutively.

In order to avoid Client timeouts during the transfer of larger files, WebGate sends 
Keepalive messages to the Client. The time interval is the value of 

RefreshInterval

 or – if this is 0 – the value of 

KeepaliveInterval

.

Furthermore, WebGate sends "NOOP" commands to the server within the 
established 

KeepaliveInterval

, so that it also maintains the connection to 

the server during sending and receiving larger files to or from the Client.

4.3

Integration over ICAP Interface

If there is a caching server with ICAP support in the network, WebGate can be 
integrated with the ICAP interface. WebGate can still scan and block incoming 
(RESPMOD) and outgoing (REQMOD) files.

X

In 

avwebgate.conf

 you must set the port, through which WebGate will 

communicate with the ICAP Client:

ICAPPort 1344

The ICAP Client sends an HTTP response for WebGate to scan (ICAP server). If the 
data is not infected, it is returned to the ICAP Client and from there forwarded to 
the Client. If the answer is blocked (e. g. in case of a virus detection), WebGate 
generates an HTML page, based on the corresponding HTML template, and sends 
this to the ICAP Client. The page is then forwarded to the Client instead of the 
original answer from the server.