Your browser does not support HTML5 local storage or you have disabled it. Some functionality on this site, including saving your privacy settings and offering you special discounts, uses local storage and may not work with local storage disabled. We recommend allowing the use of local storage in your browser. In some browsers, it is the same setting used for disabling cookies.
SSH Tectia Server for IBM z/OS uses GNU ZLIB (LZ77) for compression. The zlib compression is described in RFC 1950 and in RFC 1951.
By default, compression is disabled. Compression can be enabled in the ssh2_config file:
Alternatively, compression can be enabled on the command line:
$ ssh2 +C username@remote
Compression is worth using if your connection is slow (for example, a modem connection). The efficiency of the compression depends on the type of the file, and varies widely. It is close to 0% for already compressed files like zip and often 50% or even more for text files.