From ecb0ccd9c260701183bc8d35966e65e6a2feb2f6 Mon Sep 17 00:00:00 2001 From: Wolfgang Denk Date: Sat, 24 Sep 2005 22:37:32 +0200 Subject: Allow to force TFTP to use a fixed UDP port (Add a configuration option CONFIG_TFTP_PORT and optional env variable tftpport) Patch by Jerry Van Baren, 10 Jan 2005 --- README | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'README') diff --git a/README b/README index e3d053717c..3b36e50e11 100644 --- a/README +++ b/README @@ -1487,6 +1487,22 @@ The following options need to be configured: When SystemACE support is added, the "ace" device type becomes available to the fat commands, i.e. fatls. +- TFTP Fixed UDP Port: + CONFIG_TFTP_PORT + + If this is defined, the environment variable tftpport + is used to supply the TFTP UDP source port value. + If tftpport isn't defined, the normal pseudo-random port + number generator is used. + + The purpose for this is to allow a TFTP server to + blindly start the TFTP transfer using the pre-configured + target IP address and UDP port. This has the effect of + "punching through" the (Windows XP) firewall, allowing + the remainder of the TFTP transfer to proceed normally. + A better solution is to properly configure the firewall, + but sometimes that is not allowed. + - Show boot progress: CONFIG_SHOW_BOOT_PROGRESS @@ -2452,6 +2468,9 @@ Some configuration options can be set using Environment Variables: Useful on scripts which control the retry operation themselves. + tftpport - If this is set, the value is used for TFTP's + UDP source port. + vlan - When set to a value < 4095 the traffic over ethernet is encapsulated/received over 802.1q VLAN tagged frames. -- cgit v1.2.3