View Full Version : Hydra Slow down issue

2021-11-06, 15:17
I am running Kali Linux (installed on ssd) 2021.3 Kali Rolling xfce desktop on an old Fujitsu PC, spec wise its an old 8 core i7, 20gb of memory and a 240gb ssd and a 250gb spinney hard disks. Kali is all update

The reason for running Kali is that I am trying to hack my own router ( I have forgotten the password, yes I could simply reset it but there no fun and I learn nothing). I thought it would be an interesting fun project to learn a bit of hacking skills, if it gets to a point where I need to get onto the router then I will simply stop and reset the router.

Anyway I have produced some 6 digit wordlists, they are approximately 329mb in size and contain around 49,000,000 words, as I understand it the maximum Hydra can handle is 50,000,000. Now the PC is running 24/7 trying to crack the password. When I first started it took around 24 to 28 hours to complete a single wordlist, but what I am finding now is that after about 2 days (once one has completed I start another wordlist) of processing, the processing slows right down from something like 28000 to as low a 4000 an hour and then take a lot longer to complete a word list.

There does not seem to be a memory problem (see below) nor does SSD free space (28gb / 185GB /Home partition, using ext4 format), there no high cpu usage, it bumbles around 8% per processor. PC is connected to 1gbit switch (HP J1910) which is in turn connected to the router.

mit@NX1:~$ free
total used free shared buff/cache available
Mem: 16069528 2571776 816320 80320 12681432 13079436
Swap: 10238972 768 10238204

There no noticeable difference in general internet browsing speed from the point of first starts new a word list to when it gets to the point where it slows down. Rebooting the PC resolve the slow down issue but after couple of days it is back. The only other software installed is tighvnc so that I can access the PC from my main PC

Any thoughts??