WatchGuard x1000 Guia De Referência

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Packet Filter Services
Reference Guide
41
WatchGuard to add the source IP address to the Blocked Sites List 
whenever an incoming archie connection is denied. All of the usual 
logging options can be used with archie.
WatchGuard recommends that you use the available WWW interfaces to 
archie, such as: http://www.macsch.com/stress/archie.html
Characteristics
Protocol:  UDP
Server Port(s): 1525
Client Port(s): greater than 1023
auth (ident)
auth (ident) is a protocol used to map TCP connections back to a user 
name. It is used primarily by large public SMTP and FTP servers and 
certain security packages. While useful for logging, the information is 
seldom reliable, as attackers can make modified servers that return 
incorrect information. Incoming auth service responds with “fake” 
information to hide internal user information.
When using SMTP with incoming static NAT, you must add auth to the 
Services Arena. Configure auth to allow incoming to the Firebox. This 
enables outgoing mail messages to flow unrestricted from behind the 
Firebox to the numerous SMTP servers on the Internet that use auth to 
verify other mail servers’ identities, and allows these servers to return 
messages through the Firebox to their senders.
If you are not using incoming sdymtatic NAT, allow incoming auth to the 
IP address of your mail server.
WatchGuard recommends that both incoming and outgoing auth services 
be allowed, but be aware that such services can collect valid user names 
which can be used for hacking purposes.
Characteristics
Protocol:  TCP 
Server Port(s): 113
Client Port(s): greater than 1023