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[Support] A client from [172.16.0.1] attempted to login as you, but was rejected #860

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opened 2026-10-05 04:49:00 +02:00 by adam · 7 comments
adam commented 2026-10-05 04:49:00 +02:00
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I have my *status in hexchat telling me this:

A client from [172.16.0.1] attempted to login as you, but was rejected [Invalid Password].

What does that mean exactly? Who's you ? Is it my own znc account?

What kind of incoming connection is it?

I have my `*status` in hexchat telling me this: A client from [172.16.0.1] attempted to login as you, but was rejected [Invalid Password]. What does that mean exactly? Who's `you` ? Is it my own znc account? What kind of incoming connection is it? <!-- github-sync-id:341586170 -->
adam closed this issue 2026-10-05 04:49:00 +02:00
adam commented 2026-10-05 04:49:01 +02:00
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There was an incoming TCP connection. It tried to log in to znc as your user (that's the you), but it failed due to an invalid password.

What kind of incoming connection is it?

I would guess an IRC connection, but it might also be possible that this is a HTTP connection.

There was an incoming TCP connection. It tried to log in to znc as your user (that's the `you`), but it failed due to an invalid password. > What kind of incoming connection is it? I would guess an IRC connection, but it might also be possible that this is a HTTP connection. <!-- github-comment-id:405304193 -->
adam commented 2026-10-05 04:49:02 +02:00
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Given that the IP address is the 'router' of the network (172.16.0.1 is typically a gateway address) my guess is you've got something doing NAT to the thing and not preserving the original IP address (if this is your own network behind a router for instance). This could return something like this for either an IRC or HTTP (webadmin) connection.

Given that the IP address is the 'router' of the network (172.16.0.1 is typically a gateway address) my guess is you've got something doing NAT to the thing and not preserving the original IP address (if this is your own network behind a router for instance). This could return something like this for either an IRC or HTTP (webadmin) connection. <!-- github-comment-id:405304518 -->
adam commented 2026-10-05 04:49:03 +02:00
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tried to log in to znc as your user (that's the you), but it failed due to an invalid password.

@psychon I have not myself used a wrong account and I found strange that someone tried to login with my user. It means someone one irc is attacking my nick =/?

I would guess an IRC connection, but it might also be possible that this is a HTTP connection.

Can you show me how to reproduce this? I would found it a more common attack if it comes from http.

> tried to log in to znc as your user (that's the you), but it failed due to an invalid password. @psychon I have not myself used a wrong account and I found strange that someone tried to login with my user. It means someone one irc is attacking my nick =/? > I would guess an IRC connection, but it might also be possible that this is a HTTP connection. Can you show me how to reproduce this? I would found it a more common attack if it comes from http. <!-- github-comment-id:405315673 -->
adam commented 2026-10-05 04:49:04 +02:00
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2018-07-16 18:01 GMT+01:00 Dimitri KOPRIWA notifications@github.com:

tried to log in to znc as your user (that's the you), but it failed due to
an invalid password.

@psychon https://github.com/psychon I have not myself used a wrong
account and I found strange that someone tried to login with my user. It
means someone one irc is attacking my nick =/?

I would guess an IRC connection, but it might also be possible that this
is a HTTP connection.

Can you show me how to reproduce this? I would found it a more common
attack if it comes from http.

Try to connect with your IRC client (while still connected normally) or
browser, but type a wrong password. You'll see the same message.

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2018-07-16 18:01 GMT+01:00 Dimitri KOPRIWA <notifications@github.com>: > tried to log in to znc as your user (that's the you), but it failed due to > an invalid password. > > @psychon <https://github.com/psychon> I have not myself used a wrong > account and I found strange that someone tried to login with my user. It > means someone one irc is attacking my nick =/? > > I would guess an IRC connection, but it might also be possible that this > is a HTTP connection. > > Can you show me how to reproduce this? I would found it a more common > attack if it comes from http. > > Try to connect with your IRC client (while still connected normally) or browser, but type a wrong password. You'll see the same message. — > You are receiving this because you are subscribed to this thread. > Reply to this email directly, view it on GitHub > <https://github.com/znc/znc/issues/1579#issuecomment-405315673>, or mute > the thread > <https://github.com/notifications/unsubscribe-auth/AAT15Fw89PCr7Y-qjP72Trvg5yGTvF8Uks5uHMbVgaJpZM4VRa1t> > . > <!-- github-comment-id:405490198 -->
adam commented 2026-10-05 04:49:05 +02:00
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How do you connect from a browser ?

How do you connect from a browser ? <!-- github-comment-id:405579876 -->
adam commented 2026-10-05 04:49:06 +02:00
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http://host:port/ or https://host:port/

2018-07-17 14:22 GMT+01:00 Dimitri KOPRIWA notifications@github.com:

How do you connect from a browser ?

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http://host:port/ or https://host:port/ 2018-07-17 14:22 GMT+01:00 Dimitri KOPRIWA <notifications@github.com>: > How do you connect from a browser ? > > — > You are receiving this because you commented. > Reply to this email directly, view it on GitHub > <https://github.com/znc/znc/issues/1579#issuecomment-405579876>, or mute > the thread > <https://github.com/notifications/unsubscribe-auth/AAT15GA-Bve60YO0-Cl4xoulYXDcvpaxks5uHeUzgaJpZM4VRa1t> > . > <!-- github-comment-id:405589468 -->
adam commented 2026-10-05 04:49:06 +02:00
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That is strange, thanks for trying to help.

That is strange, thanks for trying to help. <!-- github-comment-id:405698270 -->
adam changed title from [Support] A client from [172.16.0.1] attempted to login as you, but was rejected to [Support] A client from [172.16.0.1] attempted to login as you, but was rejected 2026-10-27 15:16:23 +01:00
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Reference: adam/znc#860