I'm using the squid proxy and I'm trying to block some connections (incoming and outcoming traffic) from a certain ip address. However, for example, if I deny all the connections (http_access deny all) it only blocks the connections that I made to websites for example, but if I use another PC and try to ssh or wget the PC that owns the proxy squid, it is allowed. How can I block the traffic from and to a specific IP or DNS? It is possible to do this with Squid?
If not, what is the best way to do this?