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Using Non-Standard FTP Port Numbers with NAT
Cisco IOS® Software Releases 11.2(13) and 11.3(3) introduced the functionality for Network Address Translation (NAT) to support non-standard File Transfer Protocol (FTP) port numbers. In earlier Cisco IOS software releases, when a NAT-enabled router receives...
www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094e76.shtml
10 Aug 2005
Network Address Translation (NAT)
...Overlapping Networks Using Non-Standard FTP Port Numbers with NAT Troubleshoot and...Secure PIX Firewall Using Non-Standard FTP Port Numbers with NAT Verifying NAT Operation...
www.cisco.com/en/US/tech/tk648/tk361/tk438/tsd_technology_support_sub-protocol_home.html
09 Oct 2010
Network Address Translation Q&A [Cisco IOS Network Address Translation (NAT)]
...extended translations for port 20 and 21 with static mappings (example address) ip nat inside source static tcp 192...extendable The way that active FTP works does not allow for the use of dynamic NAT. Only static...the use of nonstandard FTP port numbers? A. Yes. To support the use of non-standard FTP port numbers, you must...
References: 4 TAC | 1 Support Community - View All
www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6586/ps6640/prod_qas0900aecd801ba55a.html
09 Jul 2007
Information About NAT - Cisco ASA 5500 Series Configuration Guide using the CLI, 8.4 and 8.6 [Cisco ASA 5500 Series Next Generation Firewalls]
...you can specify static NAT with port translation rules that use...See the "Single Address for FTP, HTTP, and SMTP (Static NAT-with-Port-Translation)" section for...translate a well-known port to a non-standard port or vice versa. For example...
References: 69 TAC | 10 Support Community - View All
www.cisco.com/en/US/docs/security/asa/asa84/configuration/guide/nat_overview.html
24 Sep 2007
Information About NAT - Cisco ASA 5500 Series Configuration Guide using the CLI, 8.3 [Cisco ASA 5500 Series Next Generation Firewalls]
...Translation •Static NAT with Port Translation for Non-Standard Ports •Static Interface NAT with Port Translation When you specify...value or to a different value. Using the same value lets you translate...secondary channels (for example, FTP and VoIP), the adaptive security...
References: 38 TAC | 2 Support Community - View All
www.cisco.com/en/US/docs/security/asa/asa83/configuration/guide/nat_overview.html
24 Sep 2007
Information About NAT (ASA 8.3 and Later) - Cisco ASA 5500 Series Configuration Guide using ASDM, 6.4 and 6.6 [Cisco Adaptive Security Device Manager]
...mapped IP address, but different ports. (See Figure 27-3. See the "Single Address for FTP, HTTP, and SMTP (Static NAT-with-Port-Translation)" section for...Translation You can also use static NAT with port translation...translate a well-known port to a non-standard port or vice versa. For example...
www.cisco.com/en/US/docs/security/asa/asa84/asdm64/configuration_guide/nat_overview.html
24 Sep 2007
Configuring NAT - Cisco Security Appliance Command Line Configuration Guide, Version 8.0 [Cisco ASA 5500 Series Next Generation Firewalls]
...allows it), while dynamic NAT does not. You also need an equal number of mapped addresses as real addresses with static NAT. Static PAT is the same...protocol (TCP or UDP) and port for the real and mapped addresses...each statement. You cannot use the same mapped address for...secondary channels (for example, FTP and VoIP), the security appliance...translate a well-known port to a non-standard port or vice versa. For example...
References: 16 TAC | 3 Support Community - View All
www.cisco.com/en/US/docs/security/asa/asa80/configuration/guide/cfgnat.html
24 Sep 2007
Information About NAT (ASA 8.3 and Later) - Cisco ASA 5500 Series Configuration Guide using ASDM, 6.3 [Cisco Adaptive Security Device Manager]
...Translation •Static NAT with Port Translation for Non-Standard Ports •Static Interface NAT with Port Translation When you specify...value or to a different value. Using the same value lets you translate...secondary channels (for example, FTP and VoIP), the adaptive security...
www.cisco.com/en/US/docs/security/asa/asa83/asdm63/configuration_guide/nat_overview.html
24 Sep 2007
Configuring NAT (ASA 8.2 and Earlier) - Cisco ASA 5500 Series Configuration Guide using ASDM, 6.4 and 6.6 [Cisco Adaptive Security Device Manager]
...allows it), while dynamic NAT does not. You also need an equal number of mapped addresses as real addresses with static NAT. Static PAT is the same...protocol (TCP or UDP) and port for the real and mapped addresses...each statement. You cannot use the same mapped address for...secondary channels (for example, FTP and VoIP), the ASA automatically...translate a well-known port to a non-standard port or vice versa. For example...
www.cisco.com/en/US/docs/security/asa/asa84/asdm64/configuration_guide/nat_82.html
31 Jan 2011
PIX/ASA 7.x: Enable FTP/TFTP Services Configuration Example
...preset_dns_map inspect ftp inspect h323 h225 inspect...tells the device to !--- use the "global_policy" policy-map... You can configure the FTP Protocol Inspection for non standard TCP ports with these configuration lines (replace XXXX with the new port number): access-list ftp-list...
References: 14 TAC
www.cisco.com/en/US/products/ps6120/products_configuration_example09186a00807ee585.shtml
03 Aug 2011