Authentication fail in syslog

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rnix
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Joined: 23 Feb 2016
Posts: 199

PostPosted: Sat Dec 16, 2017 15:09    Post subject: Authentication fail in syslog Reply with quote
I have noticed those entries in my RT-N18U syslog lately.

Code:
Dec 16 01:40:46 Gateway user.info : Authentication fail
Dec 16 12:45:35 Gateway user.info : Authentication fail
Dec 16 15:04:49 Gateway user.info : Authentication fail


Does anyone have idea what could trigger those?
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Alozaros
DD-WRT Guru


Joined: 16 Nov 2015
Posts: 6410
Location: UK, London, just across the river..

PostPosted: Sat Dec 16, 2017 21:18    Post subject: Reply with quote
got something similar on my R7800 with the latest drivers
34085

Dec 15 16:18:47 R7800 user.info : Authentication fail
and one more at the end of the log
Dec 17 10:05:53 R7800 user.info : Authentication fail
it seems its related with wi-fi client

_________________
Atheros
TP-Link WR740Nv1 ---DD-WRT 55179 WAP
TP-Link WR1043NDv2 -DD-WRT 55303 Gateway/DoT,Forced DNS,Ad-Block,Firewall,x4VLAN,VPN
TP-Link WR1043NDv2 -Gargoyle OS 1.15.x AP,DNS,QoS,Quotas
Qualcomm-Atheros
Netgear XR500 --DD-WRT 55460 Gateway/DoH,Forced DNS,AP Isolation,4VLAN,Ad-Block,Firewall,Vanilla
Netgear R7800 --DD-WRT 55460 Gateway/DoT,AD-Block,Forced DNS,AP&Net Isolation,x3VLAN,Firewall,Vanilla
Netgear R9000 --DD-WRT 55363 Gateway/DoT,AD-Block,AP Isolation,Firewall,Forced DNS,x2VLAN,Vanilla
Broadcom
Netgear R7000 --DD-WRT 55460 Gateway/SmartDNS/DoH,AD-Block,Firewall,Forced DNS,x3VLAN,VPN
NOT USING 5Ghz ANYWHERE
------------------------------------------------------
Stubby DNS over TLS I DNSCrypt v2 by mac913


Last edited by Alozaros on Sun Dec 17, 2017 8:11; edited 1 time in total
rnix
DD-WRT User


Joined: 23 Feb 2016
Posts: 199

PostPosted: Sun Dec 17, 2017 4:58    Post subject: Reply with quote
I have remote admin disabled and I regularly check syslog.
Also failed webui login attemps are being reported differently: Dec 16 15:04:52 Gateway user.info : httpd login failure - bad passwd !
This is new started only with latest builds.
rnix
DD-WRT User


Joined: 23 Feb 2016
Posts: 199

PostPosted: Tue Dec 19, 2017 7:38    Post subject: Reply with quote
OK.
After some testing I have discovered that every time I successfully login to WebGUI, this "Authentication fail" entry is generated in Syslog. What gives?
Alozaros
DD-WRT Guru


Joined: 16 Nov 2015
Posts: 6410
Location: UK, London, just across the river..

PostPosted: Tue Dec 19, 2017 12:15    Post subject: Reply with quote
same here i was thinking its wi fi client error but yep everytime i log in
its there ....
do you have any iptables restrictions regarding GUI access?

_________________
Atheros
TP-Link WR740Nv1 ---DD-WRT 55179 WAP
TP-Link WR1043NDv2 -DD-WRT 55303 Gateway/DoT,Forced DNS,Ad-Block,Firewall,x4VLAN,VPN
TP-Link WR1043NDv2 -Gargoyle OS 1.15.x AP,DNS,QoS,Quotas
Qualcomm-Atheros
Netgear XR500 --DD-WRT 55460 Gateway/DoH,Forced DNS,AP Isolation,4VLAN,Ad-Block,Firewall,Vanilla
Netgear R7800 --DD-WRT 55460 Gateway/DoT,AD-Block,Forced DNS,AP&Net Isolation,x3VLAN,Firewall,Vanilla
Netgear R9000 --DD-WRT 55363 Gateway/DoT,AD-Block,AP Isolation,Firewall,Forced DNS,x2VLAN,Vanilla
Broadcom
Netgear R7000 --DD-WRT 55460 Gateway/SmartDNS/DoH,AD-Block,Firewall,Forced DNS,x3VLAN,VPN
NOT USING 5Ghz ANYWHERE
------------------------------------------------------
Stubby DNS over TLS I DNSCrypt v2 by mac913
rnix
DD-WRT User


Joined: 23 Feb 2016
Posts: 199

PostPosted: Tue Dec 19, 2017 16:15    Post subject: Reply with quote
Alozaros wrote:
same here i was thinking its wi fi client error but yep everytime i log in
its there ....
do you have any iptables restrictions regarding GUI access?

No custom iptables whatsoever.
I also confirm exact same behaviour with TL-WR740N v4 and this is Atheros hardware.
ginzon
DD-WRT User


Joined: 23 Jun 2014
Posts: 74

PostPosted: Mon Jan 01, 2018 16:18    Post subject: Reply with quote
Atheros hardware TL-WR740N v4


I'm getting the same message. Do note, I keep a regular check on the log for any failure.. This is the first time so I came looking for an answer Smile

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TP-Link: TL-WR740N
Alozaros
DD-WRT Guru


Joined: 16 Nov 2015
Posts: 6410
Location: UK, London, just across the river..

PostPosted: Mon Jan 01, 2018 19:26    Post subject: Reply with quote
there is nothing to worry about...,its just there from 2-3 builds ago...
_________________
Atheros
TP-Link WR740Nv1 ---DD-WRT 55179 WAP
TP-Link WR1043NDv2 -DD-WRT 55303 Gateway/DoT,Forced DNS,Ad-Block,Firewall,x4VLAN,VPN
TP-Link WR1043NDv2 -Gargoyle OS 1.15.x AP,DNS,QoS,Quotas
Qualcomm-Atheros
Netgear XR500 --DD-WRT 55460 Gateway/DoH,Forced DNS,AP Isolation,4VLAN,Ad-Block,Firewall,Vanilla
Netgear R7800 --DD-WRT 55460 Gateway/DoT,AD-Block,Forced DNS,AP&Net Isolation,x3VLAN,Firewall,Vanilla
Netgear R9000 --DD-WRT 55363 Gateway/DoT,AD-Block,AP Isolation,Firewall,Forced DNS,x2VLAN,Vanilla
Broadcom
Netgear R7000 --DD-WRT 55460 Gateway/SmartDNS/DoH,AD-Block,Firewall,Forced DNS,x3VLAN,VPN
NOT USING 5Ghz ANYWHERE
------------------------------------------------------
Stubby DNS over TLS I DNSCrypt v2 by mac913
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