Watchguard Firebox X1000, Справочное руководство

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CHAPTER 4: Types of Services
50 WatchGuard Firebox System
NTP
Network Time Protocol (NTP) is a protocol built on TCP/IP that ensures
accurate local timekeeping by synchronizing computer clocks with other
clocks located on the Internet. NTP is capable of synchronizing times
within milliseconds over extended time periods.
Characteristics
• Protocol: UDP, TCP
• Server Port(s): 123
• Client Port(s): client
Outgoing Services
Outgoing TCP connections can be allowed or denied. This service icon
serves as a default setting for all outgoing TCP connections, and is
overridden by other service settings. Outgoing connections will not work
unless Proxied-HTTP, Filtered-HTTP, Outgoing, or Proxy icons are
present in the Services Arena. This icon will not enable outgoing FTP
which will function only with an FTP service.
pcAnywhere
pcAnywhere is an application used to remotely access Windows
computers. To enable this protocol, add the PCAnywhere service, and
then allow incoming access from the hosts on the Internet that need to
gain access to internal pcAnywhere servers, and to the internal
pcAnywhere servers.
pcAnywhere is not a particularly secure service and may compromise
network security, because it allows traffic inside the firewall without
authentication. In addition, your pcAnywhere server may be subject to
denial of service attacks. WatchGuard recommends using VPN options to
provide additional security.
Characteristics
• Protocol: Multi: UDP and TCP
• Server Port(s):
- 22/UDP