![]() ![]() Setting up Reverse Pointers (PTR Records)Īpplications and use cases that violate our terms of service Installing OpenVPN Community Edition via Turnkey Images How long will it take to receive VPS credentials? What is a KVM and why is it the better VPS IPv6 configuration (IPv6 address, subnet mask, default route) How to pay in EUR when PayPal balance is in another currency Traffic usage, traffic stats, monthly refill What if the assigned IP address cannot be reached from my country?īTC payment has arrived after the payment windowĪutoInstall / reinstall a VPS with a fresh OS Will my IP change when I upgrade or reinstall?ĭo you provide GUI version for Ubuntu or Debian? These ports can be configured for alternate ports within the application.Can I Change the Server Location of a VPS? Note: The ports listed above are the default port configurations for EFT. Usually this is only done when absolutely necessary due to legacy applications that have limitations which simply cannot be addressed in any other manner. It is not necessarily impossible, just potentially more painful and require intricate management and maintenance by administrators on the client side, deepening the furrows in the firewall and security personnel's collective brow. This is rarely desirable, and it is never preferable when compared to PASV mode. But, they must also manage their firewall/NAT devices so as to appropriately allow direct incoming traffic from the untrusted public internet. The problem is that they have clients capable of being configured to issue public IP address and specific ports if client is behind NAT, as is always the case, as a part of the PORT command. ![]() PORT mode applies equally to both Explicit and Implicit SSL. This is an exception, not the rule, but it is not rare, so be on the lookout for that. It can often react by blocking any further communication that does not confirm to its idea of standard FTP. These devices recognize, and latch onto clear-text FTP connection, and then have no idea how to react during the SSL negotiations. This can cause problems with some firewall/NAT devices. But if Explicit SSL is used, then it is important to remember that Explicit SSL works by the client opening a socket and briefly communicating with in clear-text FTP mode, then issuing the AUTH_SSL or AUTH_TLS command to make the switch to SSL-encrypted FTP. Sometimes Explicit SSL is the only FTPS type supported by some older legacy platforms, so there may not be any getting around that. This reduces the security risk, avoids the need to set up complex firewall or NAT rules to maintain and conflicts to resolve, and it is encrypted from the moment the socket is opened.Įxplicit SSL in PASV mode is the second-best choice. Only OUTBOUND connections from their trusted network need to be allowed at that point.It is far simpler, easier, more secure, and more fool-proof to use Implicit SSL in PASV mode.OUTBOUND ports from source port 20 to ANY.From the server side, this support would look like this: The ideal scenario is to support both Implicit SSL and Explicit SSL, when possible. "Specifying a PASV IP or Port Range" in the help documentation. OUTBOUND ports 28000-30000 to SERVER_IPįor information about defining a range of ports, refer to.INBOUND port CLIENT_CHOICE from SERVER_IP.EFT Server Enterprise, all versions (Client and Server)įollowing is an explanation of firewall rules needed for each protocol/mode to work:.THE INFORMATION IN THIS ARTICLE APPLIES TO: ![]()
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