---

c: Copyright (C) Daniel Stenberg, daniel@haxx.se, et al. SPDX-License-Identifier: curl Long: local-port Arg: <num/range> Help: Force use of RANGE for local port numbers Added: 7.15.2 Category: connection Multi: single See-also:

• globoff Example:
• --local-port 1000-3000 $URL

---

--local-port

Set a preferred single number or range (FROM-TO) of local port numbers to use for the connection(s). Note that port numbers by nature are a scarce resource so setting this range to something too narrow might cause unnecessary connection setup failures.