[ViewVC] Annotation of: svn/hopm/trunk/README

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.


Logging
=======

Once started, HOPM logs all significant events to a file called `hopm.log`,
which by default can be found at `$HOME/hopm/var/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: bugs@ircd-hybrid.org
* 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`
Revision:	7035
Committed:	Sun Jan 3 14:44:08 2016 UTC (10 years, 6 months ago) by michael
File size:	3846 byte(s)
Log Message:	- README, reference.conf: update; minor correction
#	User	Rev	Content
1	michael	5052	Introduction
2	michael	6564	============
3	michael	5052
4	michael	6564	HOPM (Hybrid Open Proxy Monitor) is an open-proxy monitoring bot designed to
5	michael	6521	monitor an individual server (all servers on the network have to run their own
6	michael	6564	bot if the IRCD does not support `farconnect` user mode) with a local
7	michael	6521	operator {} block and monitor connections. When a client connects to a server,
8			HOPM will scan the connection for insecure proxies. Insecure proxies are
9			determined by attempting to connect the proxy back to another host (usually the
10			IRC server in question).
11	michael	5052
12	michael	6521	HOPM is written ground-up in C language and it is an improved fork of BOPM
13	michael	6564	(blitzed open proxy monitor), which is a concept derived from wgmon. It
14	michael	5052	improves on wgmon with HTTP support, faster scanning (it can scan clients
15	michael	6564	simultaneously), better layout (scalability) and DNSBL support.
16	michael	5052
17
18			Requirements
19	michael	6564	============
20	michael	5052
21	michael	6564	* An IRCD, which presents connection notices in a format, which HOPM recognizes;
22	michael	5052
23	michael	6564	* A host with full connectivity for all the ports you wish to scan. i.e. is NOT
24			transparently proxied -- many domestic Internet connections have port 80
25			transparently proxied and this produces completely unpredictable results,
26			sometimes as severe as 100% of clients being K:lined;
27	michael	5052
28	michael	6564	* A UNIX OS with GNU make, a C99 compiler, etc.;
29	michael	5052
30	michael	6988	* Permission from your users to portscan them for open proxies;
31	michael	5052
32	michael	6988	* For HTTPS proxy detection, a working LibreSSL/OpenSSL library is required.
33	michael	5052
34	michael	6988
35	michael	5052	Compatibility
36	michael	6564	=============
37	michael	5052
38	michael	6564	* ircd-hybrid 8.2.x
39			* ircd-ratbox 3.0.x
40			* ircu 2.10.x
41			* InspIRCd 2.0.x
42	michael	7035	* UnrealIRCd 3.2.x, 4.0.x
43	michael	6564	* ngIRCd 22
44			* Bahamut 2.0.x
45			* Charybdis 3.4.x
46	michael	5655
47	michael	6564	HOPM is easily suitable for any other IRCD with little modification (`connregex`
48	michael	6521	in hopm.conf). However, if an IRCD does not send IP addresses in a connection
49			notice, HOPM will not work.
50	michael	5052
51
52	michael	6564	Command-line options
53			====================
54	michael	5052
55	michael	6564	`-c <name>` Configuration filename. By default, HOPM reads hopm.conf,
56			`-c foo` will cause HOPM to read foo.conf. The primary use for
57			this is to run multiple HOPM from one directory.
58	michael	5052
59	michael	6564	`-d` Debug mode. HOPM will not fork and will write logs to stderr.
60	michael	5361	Multiple -d increase debug level.
61	michael	5052
62
63	michael	6564	Operator channel commands
64			=========================
65	michael	5052
66	michael	6564	`<bot> check <host> [scanner]` Manually scans host for insecure proxies and
67			outputs all errors. If scanner is not given,
68			HOPM will scan on all scanners.NOTE: this will
69			NOT add a kline if it finds a proxy.
70	michael	5052
71	michael	6564	`<bot> stats` Outputs scan stats, uptime and connection count.
72	michael	5052
73	michael	6564	`<bot> fdstat` Outputs info about file descriptors in use.
74	michael	5052
75	michael	6564	Also, if several HOPM are present in one channel, they will all respond to !all,
76			for example `!all stats`.
77	michael	5052
78
79	michael	5104	Rehashing HOPM
80	michael	6564	==============
81	michael	5052
82	michael	6564	A /quote KILL on HOPM will cause the process to restart, rehashing the
83	michael	6521	configuration file and ending all queued scans.
84	michael	5052
85
86			Logging
87	michael	6564	=======
88	michael	5052
89	michael	6564	Once started, HOPM logs all significant events to a file called `hopm.log`,
90			which by default can be found at `$HOME/hopm/var/hopm.log`. There is also a
91			configuration option, `scanlog`, to log all proxy scans initiated, which can be
92			quite useful if you receive an abuse report related to portscanning.
93	michael	5052
94	michael	6564	These log files, especially the scan.log, can grow quite large. It is suggested
95			that you arrange for these files to be rotated periodically. You should send a
96			`USR1` signal to HOPM after moving its logfiles -- this will cause HOPM to
97			reopen those files.
98	michael	5052
99
100	michael	6564	Contact information
101			===================
102	michael	5052
103	michael	6564	* Bug reports: bugs@ircd-hybrid.org
104			* IRC: #ircd-coders on irc.ircd-hybrid.org
105			* GitHub: https://github.com/ircd-hybrid/hopm
106
107			Anonymous SVN access is also available:
108			Devel: `svn co svn://svn.ircd-hybrid.org/svnroot/hopm/trunk`
109			Stable branch (1.1.x): `svn co svn://svn.ircd-hybrid.org/svnroot/hopm/branches/1.1.x`