Hi,
I have an open internet-connection without firewall/nat directly connected to a workstation running the repeater and viewer.
I create the server program with these settings:
- via repeater [yes]
- user proxy https [yes]
- id [123456]
- host repeater [my public ip]
Customers on a company netwerk using www.proxyplus.net can create a connection but other customers on a large company network with a unknown proxyserver get the error: "socket operation was attempted to an unreachable network".
What can I do to debug this problem; I don't know where to start.
After more 1 000 000 (one million) views on forum for 1.5.0.x development versions... and 1.6.0.0 version
A new stable version, UltraVNC 1.6.1.0 and UltraVNC SC 1.6.1.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38080
Feedback is welcome
Celebrating the 22th anniversary of the UltraVNC (25th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38031
Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864
Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078
Development: UltraVNC development is always here... Any help is welcome.
A new development version, UltraVNC 1.6.3.0-dev has been released, please test it: https://forum.uvnc.com/viewtopic.php?t=38091
Feedback is welcome
Join us on social networks and share our announcements:
- Website: https://uvnc.com/
- GitHub: https://github.com/ultravnc
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
A new stable version, UltraVNC 1.6.1.0 and UltraVNC SC 1.6.1.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38080
Feedback is welcome
Celebrating the 22th anniversary of the UltraVNC (25th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38031
Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864
Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078
Development: UltraVNC development is always here... Any help is welcome.
A new development version, UltraVNC 1.6.3.0-dev has been released, please test it: https://forum.uvnc.com/viewtopic.php?t=38091
Feedback is welcome
Join us on social networks and share our announcements:
- Website: https://uvnc.com/
- GitHub: https://github.com/ultravnc
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
Some proxy servers work / some not
Re: Some proxy servers work / some not
if your firewall checks for valid certificates or major packet inspecting then it may not work...

Re: Some proxy servers work / some not
Is there a list of proxy-servers that inspect packages?
Is there a way to bypass this?
Is there a way to bypass this?
Re: Some proxy servers work / some not
No, there is no such list.Is there a list of proxy-servers that inspect packages?
A proxy carries major packet inspecting means there are some rules that determine which packets can go out/come in the network. Each proxy can be setted with different rule.
Can you provide more information like:Is there a way to bypass this?
1. What kind of proxy is using? (http(s), and/or socks 5) Is it a normal type or transparent proxy (i.e. not necessary to have a setting in Internet-Connect Option)? Does it need authentication?
2. All the messages output from the viewer when making the connection upto getting the said error message
Re: Some proxy servers work / some not
Customers with this error are working on a closed WXP machine, internet options are hidden, they have also no access to the registry. How can I find out the answer with these limitations???YY wrote: Can you provide more information like:
1. What kind of proxy is using? (http(s), and/or socks 5) Is it a normal type or transparent proxy (i.e. not necessary to have a setting in Internet-Connect Option)? Does it need authentication?
Last edited by papalima on 2007-05-16 11:25, edited 1 time in total.
Re: Some proxy servers work / some not
I can't tell.papalima wrote:Customers with this error are working on a closed WXP machine, internet options are hidden, they have also no access to the registry. How can I find out the answer with these limitations???
Your customer had setted up a secured Network & a secured Station, they may have their reason to do so. Have you asked for their concurrence so that to have their IT's help to install PHW with an open outbound route.
Base on the error message, most likely the port used by PHW is blocked.
Can you advise the message from the viewer when making the connection (the box above "Start" button