Avaya 3.7 What can be filtered, Packet Filtering and NAT, Traffic types that can be filtered

Packet Filtering

What can be filtered

Table 10 lists the specific types of traffic that can be filtered.

Table 10: Traffic types that can be filtered

User-defined TCP	Exec	Netware-IP/TCP	VPN-AuthGW
User-defined IP	Finger	Netware-IP/UDP	VPN-KeepAlive
User-defined UDP	FTP	Nettimep	VPtunnel
AURP	FTP/data	NFS	Who
Bootpc	Gopher	NFS/TCP	WWW-HTTP
Bootps	Gopher/UDP	NNTP	WWW-HTTP/UDP
Bordergw	ICMP	NNTP/UDP	XDMCP
Chargen	IDIRACCP	NWIP-DSS/TCP
Chargen/UDP	IPX/TCP	NWIP-DSS/UDP
CMD	IPX/UDP	Printer
Discard	IPrelay	Relaychat
Domain	IPtunnel	SMTP
Domain/TCP	Kerberos	SNMP
Discard/UDP	Login	SNMP-Trap
Dynamic/TCP	Nameserver	Telnet
Dynamic/UDP	Nameserver/TCP	TFTP
Echo	NetBIOS/TCP	UUCP
Echo/UDP	NetBIOS/UDP	UUCP-Path

Packet Filtering and NAT

Network address translation (NAT) and packet filtering services can be run simultaneously. Depending on the direction of the traffic, the VSU automatically determines which sequence the services will run.

For inbound packets (to the WAN), NAT is run first, then filtering. For outbound packets, filtering is run first, followed by NAT.

Issue 4 May 2005 185