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Do you use Web-filtering?<br />
Possible you have to configure exceptions for webpages at the remote side.<br />
(within firewall if using transparent proxy or within browser with explicit proxy)
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Do you use Web-filtering?
Possible you have to configure exceptions for webpages at the remote side.
(within firewall if using transparent proxy or within browser with explicit proxy)

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Bypassed existing WAN service by using new and tested Sophos UTM successfully.
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Bypassed existing WAN service by using new and tested Sophos UTM successfully.

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I have a couple of machines that are not able to browse to HTTP sites at a remote site where that I have established a PPTP VPN to that site (via the OS). I can ping the respective IP address fine however HTTP browsing does not work. I am of great suspicion that this is something in our Sophos UTM as I can browse to the HTTP sites on my laptop via cellular connection fine (effectively bypassing the Sophos UTM). <br />
<br />
I am not using 'use default gateway on remote network' yet I am unable to packet capture (in the Sophos UTM) any traffic going via the PPTP VPN to the remote site.<br />
<br />
I've worked with Sophos UTMs (ex Cyberoam) for a number of years now and I cannot see anything obvious where anything would be being blocked or dropped. Everything is open. Nothing has been modified recently that would prevent this, and it only stopped in the last few months (yes I've been slack).<br />
<br />
Has anyone experienced similar issues?
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I have a couple of machines that are not able to browse to HTTP sites at a remote site where that I have established a PPTP VPN to that site (via the OS). I can ping the respective IP address fine however HTTP browsing does not work. I am of great suspicion that this is something in our Sophos UTM as I can browse to the HTTP sites on my laptop via cellular connection fine (effectively bypassing the Sophos UTM). 

I am not using 'use default gateway on remote network' yet I am unable to packet capture (in the Sophos UTM) any traffic going via the PPTP VPN to the remote site.

I've worked with Sophos UTMs (ex Cyberoam) for a number of years now and I cannot see anything obvious where anything would be being blocked or dropped. Everything is open. Nothing has been modified recently that would prevent this, and it only stopped in the last few months (yes I've been slack).

Has anyone experienced similar issues?

Sophos PPTP VPN Blocking

Sophos develops products for communication endpoint, encryption, network security, email security and mobile security as well as unified threat management. Products include hardware (or software virtual appliance) network firewalls including web browsing protection, AntiSpam filters and antivirus protection, encryption and data protection, web filter, antispam and mobile content and device management tools.

Sophos

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.