0
votes
1answer
126 views

Squid “refusing connections” with big ACL

I've successfully set up squid and it's working as is should. I'm using "Squidman" on OS X Server (underlying squid version is 3.1.12). However, I want to use squid to block certain porn sites, so I ...
0
votes
2answers
3k views

How To Enable URL Filtering With Just Squid & C-ICAP

Before I posted this question, I read several set up guides online, the squid docs, c-icap docus, and also the ICAP RFC (3507). Unfortunately, the documentation for SQUID and C-ICAP does not provide ...
0
votes
1answer
96 views

SMTP filtering proxy

I provide SSH shells to a lot of people and block port 25, 465 and so on by default via iptables to avoid that some people send spam messages. Is there some kind of SMTP filtering proxy or -gateway ...
0
votes
2answers
60 views

Filtering Live Messenger traffic by contacts

I am looking for a filtering solution to be able to filter Live Messenger traffic according "with who" they are chatting. We use Messenger for work, but some of collegues gets a lot of "out of work" ...
0
votes
2answers
2k views

How do proxy servers filter https websites?

With my limited knowledge of HTTPS I started wondering: How do proxy servers filter HTTPS websites? I mean adding a proxy server is essentially a MITM attack which is what HTTPS was explicitly ...
1
vote
4answers
898 views

How can i make settings in router to block certain websites during office hours?

My company wants to restrict access to some websites during office hours. How this can be achieved using Router or any other technique?
1
vote
2answers
741 views

Monitoring VPN users on my network

My company runs filters on contents available for browsing and I have to check if everyone is respecting the browsing policies. Recently I have spotted some users activate OpenVPN on their ...