  In this paper, we report on the available X-ray data collected by INTEGRAL,
Swift, and XMM-Newton during the first outburst of the INTEGRAL transient IGR
J17451-3022, discovered in 2014 August. The monitoring observations provided by
the JEM-X instruments on-board INTEGRAL and the Swift/XRT showed that the event
lasted for about 9 months and that the emission of the source remained soft for
the entire period. The source emission is dominated by a thermal component
(kT~1.2 keV), most likely produced by an accretion disk. The XMM-Newton
observation carried out during the outburst revealed the presence of multiple
absorption features in the soft X-ray emission that could be associated to the
presence of an ionized absorber lying above the accretion disk, as observed in
many high-inclination low mass X-ray binaries. The XMM-Newton data also
revealed the presence of partial and rectangular X-ray eclipses (lasting about
820 s), together with dips. The latter can be associated with increases in the
overall absorption column density in the direction of the source. The detection
of two consecutive X-ray eclipses in the XMM-Newton data allowed us to estimate
the source orbital period at 22620.5(-1.8,+2.0) s (1{\sigma} c.l.).
