The return packets from the server go to the 82 address, but the router again translates the addresses so the packets end up at the computer holding address 10.0.0.2.

If you configure the packet filter to discard all incoming packets in which the ACK flag is set to 0, you can be assured that any connections to your internal severs originated from within your ...

Many security routers offer a content filtering firewall, which blocks Web traffic based on keywords in Web addresses. Alternatively, you could go for a Stateful Packet Inspection firewall device ...

Such a solution was often called a plain-packet filtering router. For the most part, dedicated packet-filtering firewalls are no longer used. Instead, access control lists (ACLs) can be configured on ...

Hardware firewalls are integrated into the router that sits between a computer and an Internet modem. They typically use packet filtering, which means they scan packet headers to determine their ...

I have a RRAS server on the border of my network that does NAT and PPTP. It works fine. However, the fact that port 1723 is open to the whole internet makes me a bit nervous, so I'm wondering if ...

Most routers (and many low-end firewalls) are limited to packet filtering when it comes to network security. Proxying: to act as an intermediary in all interactions of a given service type (FTP, HTTP, ...

The humble firewall has come a long way since the packet-filtering days of yore. The first firewalls were developed by the Digital Equipment Corporation (DEC) back in the late 1980s.

See packet filter. (2) (IP Filter) An open source utility developed by Darren Reed and other contributors that provides network address translation (NAT) and firewall services.

In the past, a solution that separated “secure” and “un-secure” networks was labeled with a term—firewall. It’s a concept that’s gone through quite an evolution since its introduction. In the ...