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.