Opera blocks ports
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yellowonline last edited by
After nearly 20 years, I decided to give Opera a try again. I'm pretty happy with it after some tweaking, except for one thing: it blocks https access to specific ports and I don't find a way to override it. I have devices running web servers at exotic ports like :1234 and opera simplyh claims they don't exist. FF and IE have no issue with it, only Chrome and Opera. Chrome has a command line parameter do allow them anyway, but I can not find the same for Opera.
I'm not interested in solutions like 'change the port on the device'. Would that work? Of course. But it's not up to a browser to decide to what port he should or shouldn't connect.
Thank you.
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A Former User last edited by
What happens if you just use the same command line parameters with Opera as you do with Chrome?
Most Chrome switches do work in Opera as well as it's also Chromium-based.
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yellowonline last edited by
Unfortunately, nothing seems to happen if I add something like --explicitly-allowed-ports=6665,6666 to the startup
I'm surprised that it's so hard to find information about this. This doesn't seem to be such an exotic question.
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shelluser last edited byAfter nearly 20 years, I decided to give Opera a try again. I'm pretty happy with it after some tweaking, except for
one thing: it blocks https access to specific ports and I don't find a way to override it. I have devices running web
servers at exotic ports like :1234 and opera simplyh claims they don't exist.Make sure to specify https:// and then the address / hostname with the portnumber instead of simply specifying the name and number. If I use mysite.org:4443 then I get the same error as you, but when I use https://mysite.org:4443 it simply works as expected for me. Maybe that could help?
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yellowonline last edited by
Sorry, I was on a short holiday.
I always use the protocol - it's one of the things I had to tweak about opera. But as I said: it is known that Chromium blocks ports. Here's the list, straight from the source code (and with line numbers):
namespace { // The general list of blocked ports. Will be blocked unless a specific // protocol overrides it. (Ex: ftp can use ports 20 and 21) static const int kRestrictedPorts[] = { 1, // tcpmux 7, // echo 9, // discard 11, // systat 13, // daytime 15, // netstat 17, // qotd 19, // chargen 20, // ftp data 21, // ftp access 22, // ssh 23, // telnet 25, // smtp 37, // time 42, // name 43, // nicname 53, // domain 77, // priv-rjs 79, // finger 87, // ttylink 95, // supdup 101, // hostriame 102, // iso-tsap 103, // gppitnp 104, // acr-nema 109, // pop2 110, // pop3 111, // sunrpc 113, // auth 115, // sftp 117, // uucp-path 119, // nntp 123, // NTP 135, // loc-srv /epmap 139, // netbios 143, // imap2 179, // BGP 389, // ldap 465, // smtp+ssl 512, // print / exec 513, // login 514, // shell 515, // printer 526, // tempo 530, // courier 531, // chat 532, // netnews 540, // uucp 556, // remotefs 563, // nntp+ssl 587, // stmp? 601, // ?? 636, // ldap+ssl 993, // ldap+ssl 995, // pop3+ssl 2049, // nfs 3659, // apple-sasl / PasswordServer 4045, // lockd 6000, // X11 6665, // Alternate IRC [Apple addition] 6666, // Alternate IRC [Apple addition] 6667, // Standard IRC [Apple addition] 6668, // Alternate IRC [Apple addition] 6669, // Alternate IRC [Apple addition] 0xFFFF, // Used to block all invalid port numbers (see // third_party/WebKit/Source/platform/weborigin/KURL.cpp, // KURL::port())My astonishment is both at the fact that no one seems to care about this - if IE would do this, it'd be a a front-page scandal on every tech site - and at the apparent lack of solution either.
From what I found on the internet, there used to be a setting called 'permitted ports'in earlier builds', but it seems to have disappeared. Apparently I'll have to get the source somewhere (if possible), edit - rather: clear- the list and compile my own version. Which obviously isn't very user-friendly.
