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The hybrid open proxy monitor fully based on BOPM
License: GNU General Public License v2.0
This project forked from dalnet/dalnet-hopm
The hybrid open proxy monitor fully based on BOPM
License: GNU General Public License v2.0
Introduction ============ HOPM (Hybrid Open Proxy Monitor) is an open-proxy monitoring bot designed to monitor an individual server (all servers on the network have to run their own bot if the IRCD does not support `farconnect` user mode) with a local operator {} block and monitor connections. When a client connects to a server, HOPM will scan the connection for insecure proxies. Insecure proxies are determined by attempting to connect the proxy back to another host (usually the IRC server in question). HOPM is written ground-up in C language and it is an improved fork of BOPM (blitzed open proxy monitor), which is a concept derived from wgmon. It improves on wgmon with HTTP support, faster scanning (it can scan clients simultaneously), better layout (scalability) and DNSBL support. Requirements ============ * An IRCD, which presents connection notices in a format, which HOPM recognizes; * A host with full connectivity for all the ports you wish to scan. i.e. is NOT transparently proxied -- many domestic Internet connections have port 80 transparently proxied and this produces completely unpredictable results, sometimes as severe as 100% of clients being K:lined; * A UNIX OS with GNU make, a C99 compiler, etc.; * Permission from your users to portscan them for open proxies; * For HTTPS proxy detection, a working LibreSSL/OpenSSL library is required. Compatibility ============= * ircd-hybrid 8.2.x * ircd-ratbox 3.0.x * ircu 2.10.x * InspIRCd 2.0.x * UnrealIRCd 3.2.x, 4.0.x * ngIRCd 22 * Bahamut 2.0.x * Charybdis 3.4.x HOPM is easily suitable for any other IRCD with little modification (`connregex` in hopm.conf). However, if an IRCD does not send IP addresses in a connection notice, HOPM will not work. Command-line options ==================== `-c <name>` Configuration filename. By default, HOPM reads hopm.conf, `-c foo` will cause HOPM to read foo.conf. The primary use for this is to run multiple HOPM from one directory. `-d` Debug mode. HOPM will not fork and will write logs to stderr. Multiple -d increase debug level. Operator channel commands ========================= `<bot> check <host> [scanner]` Manually scans host for insecure proxies and outputs all errors. If scanner is not given, HOPM will scan on all scanners.NOTE: this will NOT add a kline if it finds a proxy. `<bot> stats` Outputs scan stats, uptime and connection count. `<bot> fdstat` Outputs info about file descriptors in use. Also, if several HOPM are present in one channel, they will all respond to !all, for example `!all stats`. Rehashing HOPM ============== A /quote KILL on HOPM will cause the process to restart, rehashing the configuration file and ending all queued scans. The same can be achieved with "kill -HUP" from the command line. Logging ======= Once started, HOPM logs all significant events to a file called `hopm.log`, which by default can be found at `$HOME/hopm/var/log/hopm.log`. There is also a configuration option, `scanlog`, to log all proxy scans initiated, which can be quite useful if you receive an abuse report related to portscanning. These log files, especially the scan.log, can grow quite large. It is suggested that you arrange for these files to be rotated periodically. You should send a `USR1` signal to HOPM after moving its logfiles -- this will cause HOPM to reopen those files. Contact information =================== * Bug reports: [email protected] * IRC: #ircd-coders on irc.ircd-hybrid.org * GitHub: https://github.com/ircd-hybrid/hopm Anonymous SVN access is also available: Devel: `svn co svn://svn.ircd-hybrid.org/svnroot/hopm/trunk` Stable branch (1.1.x): `svn co svn://svn.ircd-hybrid.org/svnroot/hopm/branches/1.1.x`
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